platform/kernel/linux-starfive.git
18 months agobtrfs: update flush method assertion when reserving space
Filipe Manana [Tue, 21 Mar 2023 11:13:41 +0000 (11:13 +0000)]
btrfs: update flush method assertion when reserving space

When reserving space, at space-info.c:__reserve_bytes(), we assert that
either the current task is not holding a transacion handle, or, if it is,
that the flush method is not BTRFS_RESERVE_FLUSH_ALL. This is because that
flush method can trigger transaction commits, and therefore could lead to
a deadlock.

However there are other 2 flush methods that can trigger transaction
commits:

1) BTRFS_RESERVE_FLUSH_ALL_STEAL
2) BTRFS_RESERVE_FLUSH_EVICT

So update the assertion to check the flush method is also not one those
two methods if the current task is holding a transaction handle.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: update documentation for BTRFS_RESERVE_FLUSH_EVICT flush method
Filipe Manana [Tue, 21 Mar 2023 11:13:40 +0000 (11:13 +0000)]
btrfs: update documentation for BTRFS_RESERVE_FLUSH_EVICT flush method

The BTRFS_RESERVE_FLUSH_EVICT flush method can also commit transactions,
see the definition of the evict_flush_states const array at space-info.c,
but the documentation for it at space-info.h does not mention it.
So update the documentation.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: remove check for NULL block reserve at btrfs_block_rsv_check()
Filipe Manana [Tue, 21 Mar 2023 11:13:39 +0000 (11:13 +0000)]
btrfs: remove check for NULL block reserve at btrfs_block_rsv_check()

The block reserve passed to btrfs_block_rsv_check() is never NULL, so
remove the check. In case it can ever become NULL in the future, then
we'll get a pretty obvious and clear NULL pointer dereference crash and
stack trace.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: pass a bool size update argument to btrfs_block_rsv_add_bytes()
Filipe Manana [Tue, 21 Mar 2023 11:13:38 +0000 (11:13 +0000)]
btrfs: pass a bool size update argument to btrfs_block_rsv_add_bytes()

At btrfs_delayed_refs_rsv_refill(), we are passing a value of 0 to the
'update_size' argument of btrfs_block_rsv_add_bytes(), which is defined
as a boolean. Functionally this is fine because a 0 is, implicitly,
converted to a boolean false value. However it's easier to read an
explicit 'false' value, so just pass 'false' instead of 0.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: pass a bool to btrfs_block_rsv_migrate() at evict_refill_and_join()
Filipe Manana [Tue, 21 Mar 2023 11:13:37 +0000 (11:13 +0000)]
btrfs: pass a bool to btrfs_block_rsv_migrate() at evict_refill_and_join()

The last argument of btrfs_block_rsv_migrate() is a boolean, but we are
passing an integer, with a value of 1, to it at evict_refill_and_join().
While this is not a bug, due to type conversion, it's a lot more clear to
simply pass the boolean true value instead. So just do that.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: remove btrfs_lru_cache_is_full() inline function
Filipe Manana [Tue, 21 Mar 2023 11:37:04 +0000 (11:37 +0000)]
btrfs: remove btrfs_lru_cache_is_full() inline function

It's not used anywhere at the moment, but it was used in earlier version
of a patch that removed its use in the second version. So just remove
btrfs_lru_cache_is_full().

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: simplify adding pages in btrfs_add_compressed_bio_pages
Christoph Hellwig [Tue, 14 Mar 2023 16:51:10 +0000 (17:51 +0100)]
btrfs: simplify adding pages in btrfs_add_compressed_bio_pages

btrfs_add_compressed_bio_pages is needlessly complicated.  Instead
of iterating over the logic disk offset just to add pages to the bio
use a simple offset starting at 0, which also removes most of the
claiming.  Additionally __bio_add_pages already takes care of the
assert that the bio is always properly sized, and btrfs_submit_bio
called right after asserts that the bio size is non-zero.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: move the bi_sector assignment out of btrfs_add_compressed_bio_pages
Christoph Hellwig [Tue, 14 Mar 2023 16:51:09 +0000 (17:51 +0100)]
btrfs: move the bi_sector assignment out of btrfs_add_compressed_bio_pages

Adding pages to a bio has nothing to do with the sector.  Move the
assignment to the two callers in preparation for cleaning up
btrfs_add_compressed_bio_pages.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: sysfs: relax bg_reclaim_threshold for debugging purposes
Naohiro Aota [Mon, 13 Mar 2023 07:46:54 +0000 (16:46 +0900)]
btrfs: sysfs: relax bg_reclaim_threshold for debugging purposes

Currently, /sys/fs/btrfs/<UUID>/bg_reclaim_threshold is limited to 0
(disable) or [50 .. 100]%, so we need to fill 50% of a device to start the
auto reclaim process. It is cumbersome to do so when we want to shake out
possible race issues of normal write vs reclaim.

Relax the threshold check under the BTRFS_DEBUG option.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: make btrfs_split_bio work on struct btrfs_bio
Christoph Hellwig [Tue, 7 Mar 2023 16:39:45 +0000 (17:39 +0100)]
btrfs: make btrfs_split_bio work on struct btrfs_bio

btrfs_split_bio expects a btrfs_bio as argument and always allocates one.
Type both the orig_bio argument and the return value as struct btrfs_bio
to improve type safety.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: return a btrfs_bio from btrfs_bio_alloc
Christoph Hellwig [Tue, 7 Mar 2023 16:39:44 +0000 (17:39 +0100)]
btrfs: return a btrfs_bio from btrfs_bio_alloc

Return the containing struct btrfs_bio instead of the less type safe
struct bio from btrfs_bio_alloc.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: store a pointer to a btrfs_bio in struct btrfs_bio_ctrl
Christoph Hellwig [Tue, 7 Mar 2023 16:39:43 +0000 (17:39 +0100)]
btrfs: store a pointer to a btrfs_bio in struct btrfs_bio_ctrl

The bio in struct btrfs_bio_ctrl must be a btrfs_bio, so store a pointer
to the btrfs_bio for better type checking.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: simplify finding the inode in submit_one_bio
Christoph Hellwig [Tue, 7 Mar 2023 16:39:42 +0000 (17:39 +0100)]
btrfs: simplify finding the inode in submit_one_bio

struct btrfs_bio now has an always valid inode pointer that can be used
to find the inode in submit_one_bio, so use that and initialize all
variables for which it is possible at declaration time.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: store a pointer to the original btrfs_bio in struct compressed_bio
Christoph Hellwig [Tue, 7 Mar 2023 16:39:41 +0000 (17:39 +0100)]
btrfs: store a pointer to the original btrfs_bio in struct compressed_bio

The original bio must be a btrfs_bio, so store a pointer to the
btrfs_bio for better type checking.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: pass a btrfs_bio to btrfs_submit_compressed_read
Christoph Hellwig [Tue, 7 Mar 2023 16:39:40 +0000 (17:39 +0100)]
btrfs: pass a btrfs_bio to btrfs_submit_compressed_read

btrfs_submit_compressed_read expects the bio passed to it to be embedded
into a btrfs_bio structure.  Pass the btrfs_bio directly to increase type
safety and make the code self-documenting.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: pass a btrfs_bio to btrfs_submit_bio
Christoph Hellwig [Tue, 7 Mar 2023 16:39:39 +0000 (17:39 +0100)]
btrfs: pass a btrfs_bio to btrfs_submit_bio

btrfs_submit_bio expects the bio passed to it to be embedded into a
btrfs_bio structure.  Pass the btrfs_bio directly to increase type
safety and make the code self-documenting.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: move zero filling of compressed read bios into common code
Christoph Hellwig [Tue, 7 Mar 2023 16:39:38 +0000 (17:39 +0100)]
btrfs: move zero filling of compressed read bios into common code

All algorithms have to fill the remainder of the orig_bio with zeroes,
so do it in common code.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: cleanup main loop in btrfs_encoded_read_regular_fill_pages
Christoph Hellwig [Tue, 7 Mar 2023 16:39:37 +0000 (17:39 +0100)]
btrfs: cleanup main loop in btrfs_encoded_read_regular_fill_pages

btrfs_encoded_read_regular_fill_pages has a pretty odd control flow.
Unwind it so that there is a single loop over the pages array.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: remove unused members from struct btrfs_encoded_read_private
Christoph Hellwig [Tue, 7 Mar 2023 16:39:36 +0000 (17:39 +0100)]
btrfs: remove unused members from struct btrfs_encoded_read_private

The inode and file_offset members in struct btrfs_encoded_read_private
are unused, so remove them.

Last used in commit 7959bd441176 ("btrfs: remove the start argument to
check_data_csum and export") and commit 7609afac6775 ("btrfs: handle
checksum validation and repair at the storage layer").

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: locking: use atomic for DREW lock writers
David Sterba [Wed, 1 Mar 2023 20:47:08 +0000 (21:47 +0100)]
btrfs: locking: use atomic for DREW lock writers

The DREW lock uses percpu variable to track lock counters and for that
it needs to allocate the structure. In btrfs_read_tree_root() or
btrfs_init_fs_root() this may add another error case or requires the
NOFS scope protection.

One way is to preallocate the structure as was suggested in
https://lore.kernel.org/linux-btrfs/20221214021125.28289-1-robbieko@synology.com/

We may avoid the allocation altogether if we don't use the percpu
variables but an atomic for the writer counter. This should not make any
difference, the DREW lock is used for truncate and NOCOW writes along
with other IO operations.

The percpu counter for writers has been there since the original commit
8257b2dc3c1a1057 "Btrfs: introduce btrfs_{start, end}_nocow_write() for
each subvolume". The reason could be to avoid hammering the same
cacheline from all the readers but then the writers do that anyway.

Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: remove redundant clearing of NODISCARD
Anand Jain [Thu, 2 Mar 2023 13:30:48 +0000 (21:30 +0800)]
btrfs: remove redundant clearing of NODISCARD

If no discard mount option is specified, including the NODISCARD option,
we make the async discard the default option then we don't have to call
the clear_opt again to clear the NODISCARD flag. Though this makes no
difference, that the call is redundant has been pointed out several
times so we better remove it.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: avoid repetitive define BTRFS_FEATURE_INCOMPAT_SUPP
Anand Jain [Mon, 6 Mar 2023 13:28:09 +0000 (21:28 +0800)]
btrfs: avoid repetitive define BTRFS_FEATURE_INCOMPAT_SUPP

BTRFS_FEATURE_INCOMPAT_SUPP is defined twice, once under
CONFIG_BTRFS_DEBUG and once without it, resulting in repetitive code. The
reason for this is to add experimental features under CONFIG_BTRFS_DEBUG.

To avoid repetitive code, add a common list BTRFS_FEATURE_INCOMPAT_SUPP_STABLE,
and append experimental features only under CONFIG_BTRFS_DEBUG.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: scrub: remove root and csum_root arguments from scrub_simple_mirror()
Qu Wenruo [Mon, 16 Jan 2023 07:04:13 +0000 (15:04 +0800)]
btrfs: scrub: remove root and csum_root arguments from scrub_simple_mirror()

We don't need to pass the roots as arguments, reading them from the
rb-tree is cheap.  Thus there is really not much need to pre-fetch it
and pass it all the way from scrub_stripe().

And we already have more than enough arguments in scrub_simple_mirror()
and scrub_simple_stripe(), it's better to remove them and only grab
those roots in scrub_simple_mirror().

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: scrub: remove unused path inside scrub_stripe()
Qu Wenruo [Mon, 16 Jan 2023 07:04:12 +0000 (15:04 +0800)]
btrfs: scrub: remove unused path inside scrub_stripe()

The variable @path is no longer passed into any call sites after commit
18d30ab96149 ("btrfs: scrub: use scrub_simple_mirror() to handle RAID56
data stripe scrub"), thus we can remove the variable completely.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: do not use replace target device as an extra mirror
Qu Wenruo [Wed, 22 Feb 2023 07:47:40 +0000 (15:47 +0800)]
btrfs: do not use replace target device as an extra mirror

[BUG]
Currently btrfs can use dev-replace device as an extra mirror for
read-repair.  But it can lead to NODATASUM corruption in the following
case:

 There is a RAID1 data chunk, and dev-replace is running from
 dev2 to dev0.

 |//| = Replaced data
          X       X+1MB     X+2MB
  Dev 2:  |       |         |           <- Source dev
  Dev 0:  |///////|         |           <- Target dev

Then a read on dev 2 X+2MB happens.
And something wrong happened inside devid 2, causing an -EIO.

In that case, read-repair would try the next mirror, and since we can
use target device as an extra mirror, we will use that mirror instead.

But unfortunately since the read is beyond the current replace cursor,
we should not trust it at all, what we get would be just uninitialized
garbage.

But if this read is for NODATASUM range, then we just trust them and
cause data corruption.

[CAUSE]
We used to have some checks to make sure we only return such extra
mirror when the range is before our left cursor.

The first commit introducing this behavior is ad6d620e2a57 ("Btrfs:
allow repair code to include target disk when searching mirrors").

But later a fix, 22ab04e814f4 ("Btrfs: fix race between device replace
and chunk allocation") changed the behavior, to always let
btrfs_map_block() include the extra mirror to address a race in
dev-replace which can cause missing writes to target device.

This means, we lose the tracking of cursor for the extra mirror, thus
can lead to above corruption.

[FIX]
The extra mirror is never a reliable one, at the beginning of
dev-replace, the reliability is zero, while only at the end of the
replace it's a fully reliable mirror.

We either do the complex tracking, or never trust it.

IMHO it's much easier to maintain if we don't trust it at all, and the
extra mirror can only benefit for a limited period of time (during
replace).

Thus this patch would completely remove the ability to use target device
as an extra mirror.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: open_ctree() error handling cleanup
Qu Wenruo [Tue, 28 Feb 2023 00:44:30 +0000 (08:44 +0800)]
btrfs: open_ctree() error handling cleanup

Currently open_ctree() still uses two variables for error handling, err
and ret. This can be confusing and missing some errors and does not
conform to current coding style.

This patch will fix the problems by:

- Use only ret for error handling

- Add proper ret assignment
  Originally we rely on the default value (-EINVAL) of err to handle
  errors, but that doesn't really reflects the error.
  This will change it use the correct error number for the following
  call sites:

  * subpage_info allocation
  * btrfs_free_extra_devids()
  * btrfs_check_rw_degradable()
  * cleaner_kthread allocation
  * transaction_kthread allocation

- Add an extra ASSERT()
  To make sure we error out instead of returning 0.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: cleanup the main loop in btrfs_lookup_bio_sums
Christoph Hellwig [Wed, 22 Feb 2023 17:07:02 +0000 (09:07 -0800)]
btrfs: cleanup the main loop in btrfs_lookup_bio_sums

Introduce a bio_offset variable for the current offset into the bio
instead of recalculating it over and over.   Remove the now only used
once search_len and sector_offset variables, and reduce the scope for
count and cur_disk_bytenr.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: remove search_file_offset_in_bio
Christoph Hellwig [Wed, 22 Feb 2023 17:07:01 +0000 (09:07 -0800)]
btrfs: remove search_file_offset_in_bio

There is no need to search for a file offset in a bio, it is now always
provided in bbio->file_offset (set at bio allocation time since
0d495430db8d ("btrfs: set bbio->file_offset in alloc_new_bio")).  Just
use that with the offset into the bio.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: sink calc_bio_boundaries into its only caller
Johannes Thumshirn [Tue, 21 Feb 2023 16:21:04 +0000 (08:21 -0800)]
btrfs: sink calc_bio_boundaries into its only caller

Nowadays calc_bio_boundaries() is a relatively simple function that only
guarantees the one bio equals to one ordered extent rule for uncompressed
Zone Append bios.

Sink it into it's only caller alloc_new_bio().

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: simplify main loop in submit_extent_page
Christoph Hellwig [Mon, 27 Feb 2023 15:17:04 +0000 (08:17 -0700)]
btrfs: simplify main loop in submit_extent_page

bio_add_page always adds either the entire range passed to it or nothing.
Based on that btrfs_bio_add_page can only return a length smaller than
the passed in one when hitting the ordered extent limit, which can only
happen for writes.  Given that compressed writes never even use this code
path, this means that all the special cases for compressed extent offset
handling are dead code.

Reflow submit_extent_page to take advantage of this by inlining
btrfs_bio_add_page and handling the ordered extent limit by decrementing
it for each added range and thus significantly simplifying the loop.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: check for contiguity in submit_extent_page
Christoph Hellwig [Mon, 27 Feb 2023 15:17:03 +0000 (08:17 -0700)]
btrfs: check for contiguity in submit_extent_page

Different loop iterations in btrfs_bio_add_page not only have the same
contiguity parameters, but also any non-initial operation operates on a
fresh bio anyway.

Factor out the contiguity check into a new btrfs_bio_is_contig and only
call it once in submit_extent_page before descending into the
bio_add_page loop.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: simplify the error handling in __extent_writepage_io
Christoph Hellwig [Mon, 27 Feb 2023 15:17:02 +0000 (08:17 -0700)]
btrfs: simplify the error handling in __extent_writepage_io

Remove the has_error and saved_ret variables, and just jump to a goto
label for error handling from the only place returning an error from the
main loop.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: remove the submit_extent_page return value
Christoph Hellwig [Mon, 27 Feb 2023 15:17:01 +0000 (08:17 -0700)]
btrfs: remove the submit_extent_page return value

submit_extent_page always returns 0 since commit d5e4377d5051 ("btrfs:
split zone append bios in btrfs_submit_bio").  Change it to a void return
type and remove all the unreachable error handling code in the callers.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: remove the compress_type argument to submit_extent_page
Christoph Hellwig [Mon, 27 Feb 2023 15:17:00 +0000 (08:17 -0700)]
btrfs: remove the compress_type argument to submit_extent_page

Update the compress_type in the btrfs_bio_ctrl after forcing out the
previous bio in btrfs_do_readpage, so that alloc_new_bio can just use
the compress_type member in struct btrfs_bio_ctrl instead of passing the
same information redundantly as a function argument.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: rename the this_bio_flag variable in btrfs_do_readpage
Christoph Hellwig [Mon, 27 Feb 2023 15:16:59 +0000 (08:16 -0700)]
btrfs: rename the this_bio_flag variable in btrfs_do_readpage

Rename this_bio_flag to compress_type to match the surrounding code
and better document the intent.  Also use the proper enum type instead
of unsigned long.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: move the compress_type check out of btrfs_bio_add_page
Christoph Hellwig [Mon, 27 Feb 2023 15:16:58 +0000 (08:16 -0700)]
btrfs: move the compress_type check out of btrfs_bio_add_page

The compress_type can only change on a per-extent basis.  So instead of
checking it for every page in btrfs_bio_add_page, do the check once in
btrfs_do_readpage, which is the only caller of btrfs_bio_add_page and
submit_extent_page that deals with compressed extents.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: add a wbc pointer to struct btrfs_bio_ctrl
Christoph Hellwig [Mon, 27 Feb 2023 15:16:57 +0000 (08:16 -0700)]
btrfs: add a wbc pointer to struct btrfs_bio_ctrl

Instead of passing down the wbc pointer the deep call chain, just
add it to the btrfs_bio_ctrl structure.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: remove the sync_io flag in struct btrfs_bio_ctrl
Christoph Hellwig [Mon, 27 Feb 2023 15:16:56 +0000 (08:16 -0700)]
btrfs: remove the sync_io flag in struct btrfs_bio_ctrl

The sync_io flag is equivalent to wbc->sync_mode == WB_SYNC_ALL, so
just check for that and remove the separate flag.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: store the bio opf in struct btrfs_bio_ctrl
Christoph Hellwig [Mon, 27 Feb 2023 15:16:55 +0000 (08:16 -0700)]
btrfs: store the bio opf in struct btrfs_bio_ctrl

The bio op and flags never change over the life time of a bio_ctrl,
so move it in there instead of passing it down the deep call chain
all the way down to alloc_new_bio.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: remove the force_bio_submit to submit_extent_page
Christoph Hellwig [Mon, 27 Feb 2023 15:16:54 +0000 (08:16 -0700)]
btrfs: remove the force_bio_submit to submit_extent_page

If force_bio_submit, submit_extent_page simply calls submit_one_bio as
the first thing.  This can just be moved to the only caller that sets
force_bio_submit to true.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: don't set force_bio_submit in read_extent_buffer_subpage
Christoph Hellwig [Mon, 27 Feb 2023 15:16:53 +0000 (08:16 -0700)]
btrfs: don't set force_bio_submit in read_extent_buffer_subpage

When read_extent_buffer_subpage calls submit_extent_page, it does
so on a freshly initialized btrfs_bio_ctrl structure that can't have
a valid bio to submit.  Clear the force_bio_submit parameter to false
as there is nothing to submit.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: open code btrfs_bin_search()
Anand Jain [Fri, 24 Feb 2023 03:31:26 +0000 (11:31 +0800)]
btrfs: open code btrfs_bin_search()

btrfs_bin_search() is a simple wrapper that searches for the whole slots
by calling btrfs_generic_bin_search() with the starting slot/first_slot
preset to 0.

This simple wrapper can be open coded as btrfs_bin_search().

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: dev-replace: properly follow its read mode
Qu Wenruo [Wed, 22 Feb 2023 07:04:37 +0000 (15:04 +0800)]
btrfs: dev-replace: properly follow its read mode

[BUG]
Although dev replace ioctl has a way to specify the mode on whether we
should read from the source device, it's not properly followed.

 # mkfs.btrfs -f -d raid1 -m raid1 $dev1 $dev2
 # mount $dev1 $mnt
 # xfs_io -f -c "pwrite 0 32M" $mnt/file
 # sync
 # btrfs replace start -r -f 1 $dev3 $mnt

And one extra trace is added to scrub_submit(), showing the detail about
the bio:

  btrfs-11569 [005] ...  37.0270: scrub_submit.part.0: devid=1 logical=22036480 phy=22036480 len=16384
  btrfs-11569 [005] ...  37.0273: scrub_submit.part.0: devid=1 logical=30457856 phy=30457856 len=32768
  btrfs-11569 [005] ...  37.0274: scrub_submit.part.0: devid=1 logical=30507008 phy=30507008 len=49152
  btrfs-11569 [005] ...  37.0274: scrub_submit.part.0: devid=1 logical=30605312 phy=30605312 len=32768
  btrfs-11569 [005] ...  37.0275: scrub_submit.part.0: devid=1 logical=30703616 phy=30703616 len=65536
  btrfs-11569 [005] ...  37.0281: scrub_submit.part.0: devid=1 logical=298844160 phy=298844160 len=131072
  ...
  btrfs-11569 [005] ...  37.0762: scrub_submit.part.0: devid=1 logical=322961408 phy=322961408 len=131072
  btrfs-11569 [005] ...  37.0762: scrub_submit.part.0: devid=1 logical=323092480 phy=323092480 len=131072

One can see that all the reads are submitted to devid 1, even if we have
specified "-r" option to avoid reading from the source device.

[CAUSE]
The dev-replace read mode is only set but not followed by scrub code at
all.  In fact, only common read path is properly following the read
mode, but scrub itself has its own read path, thus not following the
mode.

[FIX]
Here we enhance scrub_find_good_copy() to also follow the read mode.

The idea is pretty simple, in the first loop, we avoid the following
devices:

- Missing devices
  This is the existing condition

- The source device if the replace wants to avoid it.

And if above loop found no candidate (e.g. replace a single device),
then we discard the 2nd condition, and try again.

Since we're here, also enhance the function scrub_find_good_copy() by:

- Remove the forward declaration

- Makes it return int
  To indicates errors, e.g. no good mirror found.

- Add extra error messages

Now with the same trace, "btrfs replace start -r" works as expected:

  btrfs-1213 [000] ...  991.9059: scrub_submit.part.0: devid=2 logical=22036480 phy=1064960 len=16384
  btrfs-1213 [000] ...  991.9062: scrub_submit.part.0: devid=2 logical=30457856 phy=9486336 len=32768
  btrfs-1213 [000] ...  991.9063: scrub_submit.part.0: devid=2 logical=30507008 phy=9535488 len=49152
  btrfs-1213 [000] ...  991.9064: scrub_submit.part.0: devid=2 logical=30605312 phy=9633792 len=32768
  btrfs-1213 [000] ...  991.9065: scrub_submit.part.0: devid=2 logical=30703616 phy=9732096 len=65536
  btrfs-1213 [000] ...  991.9073: scrub_submit.part.0: devid=2 logical=298844160 phy=277872640 len=131072
  btrfs-1213 [000] ...  991.9075: scrub_submit.part.0: devid=2 logical=298975232 phy=278003712 len=131072
  btrfs-1213 [000] ...  991.9078: scrub_submit.part.0: devid=2 logical=299106304 phy=278134784 len=131072
  ...
  btrfs-1213 [000] ...  991.9474: scrub_submit.part.0: devid=2 logical=318504960 phy=297533440 len=131072
  btrfs-1213 [000] ...  991.9476: scrub_submit.part.0: devid=2 logical=318636032 phy=297664512 len=131072
  btrfs-1213 [000] ...  991.9479: scrub_submit.part.0: devid=2 logical=318767104 phy=297795584 len=131072

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: fold finish_compressed_bio_write into btrfs_finish_compressed_write_work
Christoph Hellwig [Fri, 10 Feb 2023 07:48:41 +0000 (08:48 +0100)]
btrfs: fold finish_compressed_bio_write into btrfs_finish_compressed_write_work

Fold finish_compressed_bio_write into its only caller as there is no
reason to keep them separate.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: don't clear page->mapping in btrfs_free_compressed_pages
Christoph Hellwig [Fri, 10 Feb 2023 07:48:40 +0000 (08:48 +0100)]
btrfs: don't clear page->mapping in btrfs_free_compressed_pages

No one ever set ->mapping on these pages, so don't bother clearing it.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: factor out a btrfs_free_compressed_pages helper
Christoph Hellwig [Fri, 10 Feb 2023 07:48:39 +0000 (08:48 +0100)]
btrfs: factor out a btrfs_free_compressed_pages helper

Share the code to free the compressed pages and the array to hold them
into a common helper.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: factor out a btrfs_add_compressed_bio_pages helper
Christoph Hellwig [Fri, 10 Feb 2023 07:48:38 +0000 (08:48 +0100)]
btrfs: factor out a btrfs_add_compressed_bio_pages helper

Factor out a common helper to add the compressed_bio pages to the
bio that is shared by the compressed read and write path.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: use the bbio file offset in add_ra_bio_pages
Christoph Hellwig [Fri, 10 Feb 2023 07:48:37 +0000 (08:48 +0100)]
btrfs: use the bbio file offset in add_ra_bio_pages

struct btrfs_bio now has a file_offset field set up by all submitters.
Use that value combined with the bio size in add_ra_bio_pages to
calculate the last offset in the bio.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: use the bbio file offset in btrfs_submit_compressed_read
Christoph Hellwig [Fri, 10 Feb 2023 07:48:36 +0000 (08:48 +0100)]
btrfs: use the bbio file offset in btrfs_submit_compressed_read

struct btrfs_bio now has a file_offset field set up by all submitters.
Use that in btrfs_submit_compressed_read instead of recalculating the
value.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: remove redundant free_extent_map in btrfs_submit_compressed_read
Christoph Hellwig [Fri, 10 Feb 2023 07:48:35 +0000 (08:48 +0100)]
btrfs: remove redundant free_extent_map in btrfs_submit_compressed_read

em can't be non-NULL after the free_extent_map label.  Also remove
the now pointless clearing of em to NULL after freeing it.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: embed a btrfs_bio into struct compressed_bio
Christoph Hellwig [Fri, 10 Feb 2023 07:48:34 +0000 (08:48 +0100)]
btrfs: embed a btrfs_bio into struct compressed_bio

Embed a btrfs_bio into struct compressed_bio.  This avoids potential
(so far theoretical) deadlocks due to nesting of btrfs_bioset allocations
for the original read bio and the compressed bio, and avoids an extra
memory allocation in the I/O path.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: replace btrfs_io_context::raid_map with a fixed u64 value
Qu Wenruo [Fri, 17 Feb 2023 05:37:03 +0000 (13:37 +0800)]
btrfs: replace btrfs_io_context::raid_map with a fixed u64 value

In btrfs_io_context structure, we have a pointer raid_map, which
indicates the logical bytenr for each stripe.

But considering we always call sort_parity_stripes(), the result
raid_map[] is always sorted, thus raid_map[0] is always the logical
bytenr of the full stripe.

So why we waste the space and time (for sorting) for raid_map?

This patch will replace btrfs_io_context::raid_map with a single u64
number, full_stripe_start, by:

- Replace btrfs_io_context::raid_map with full_stripe_start

- Replace call sites using raid_map[0] to use full_stripe_start

- Replace call sites using raid_map[i] to compare with nr_data_stripes.

The benefits are:

- Less memory wasted on raid_map
  It's sizeof(u64) * num_stripes vs sizeof(u64).
  It'll always save at least one u64, and the benefit grows larger with
  num_stripes.

- No more weird alloc_btrfs_io_context() behavior
  As there is only one fixed size + one variable length array.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: use an efficient way to represent source of duplicated stripes
Qu Wenruo [Tue, 7 Feb 2023 04:26:14 +0000 (12:26 +0800)]
btrfs: use an efficient way to represent source of duplicated stripes

For btrfs dev-replace, we have to duplicate writes to the source
device into the target device.

For non-RAID56, all writes into the same mapped ranges are sharing the
same content, thus they don't really need to bother anything.
(E.g. in btrfs_submit_bio() for non-RAID56 range we just submit the
same write to all involved devices).

But for RAID56, all stripes contain different content, thus we must
have a clear mapping of which stripe is duplicated from which original
stripe.

Currently we use a complex way using tgtdev_map[] array, e.g:

 num_tgtdevs = 1
 tgtdev_map[0] = 0    <- Means stripes[0] is not involved in replace.
 tgtdev_map[1] = 3    <- Means stripes[1] is involved in replace,
 and it's duplicated to stripes[3].
 tgtdev_map[2] = 0    <- Means stripes[2] is not involved in replace.

But this is wasting some space, and ignores one important thing for
dev-replace, there is at most one running replace.

Thus we can change it to a fixed array to represent the mapping:

 replace_nr_stripes = 1
 replace_stripe_src = 1    <- Means stripes[1] is involved in replace.
      thus the extra stripe is a copy of
      stripes[1]

By this we can save some space for bioc on RAID56 chunks with many
devices.  And we get rid of one variable sized array from bioc.

Thus the patch involves the following changes:

- Replace @num_tgtdevs and @tgtdev_map[] with @replace_nr_stripes
  and @replace_stripe_src.

  @num_tgtdevs is just renamed to @replace_nr_stripes.
  While the mapping is completely changed.

- Add extra ASSERT()s for RAID56 code

- Only add two more extra stripes for dev-replace cases.
  As we have an upper limit on how many dev-replace stripes we can have.

- Unify the behavior of handle_ops_on_dev_replace()
  Previously handle_ops_on_dev_replace() go two different paths for
  WRITE and GET_READ_MIRRORS.
  Now unify them by always going the WRITE path first (with at most 2
  replace stripes), then if we're doing GET_READ_MIRRORS and we have 2
  extra stripes, just drop one stripe.

- Remove the @real_stripes argument from alloc_btrfs_io_context()
  As we don't need the old variable length array any more.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: reduce type width of btrfs_io_contexts
Qu Wenruo [Tue, 7 Feb 2023 04:26:13 +0000 (12:26 +0800)]
btrfs: reduce type width of btrfs_io_contexts

That structure is our ultimate object for all __btrfs_map_block()
related functions.  We have some hard to understand members, like
tgtdev_map, but without any comments.

This patch will improve the situation:

- Add extra comments for num_stripes, mirror_num, num_tgtdevs and
  tgtdev_map[]
  Especially for the last two members, add a dedicated (thus very long)
  comments for them, with example to explain it.

- Shrink those int members to u16.
  In fact our on-disk format is only using u16 for num_stripes, thus
  no need to use int at all.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: simplify the bioc argument for handle_ops_on_dev_replace()
Qu Wenruo [Tue, 7 Feb 2023 04:26:12 +0000 (12:26 +0800)]
btrfs: simplify the bioc argument for handle_ops_on_dev_replace()

There is no memory re-allocation for handle_ops_on_dev_replace(), thus
we don't need to pass a btrfs_io_context pointer.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: reduce div64 calls by limiting the number of stripes of a chunk to u32
Qu Wenruo [Fri, 17 Feb 2023 05:36:59 +0000 (13:36 +0800)]
btrfs: reduce div64 calls by limiting the number of stripes of a chunk to u32

There are quite some div64 calls inside btrfs_map_block() and its
variants.

Such calls are for @stripe_nr, where @stripe_nr is the number of
stripes before our logical bytenr inside a chunk.

However we can eliminate such div64 calls by just reducing the width of
@stripe_nr from 64 to 32.

This can be done because our chunk size limit is already 10G, with fixed
stripe length 64K.
Thus a U32 is definitely enough to contain the number of stripes.

With such width reduction, we can get rid of slower div64, and extra
warning for certain 32bit arch.

This patch would do:

- Add a new tree-checker chunk validation on chunk length
  Make sure no chunk can reach 256G, which can also act as a bitflip
  checker.

- Reduce the width from u64 to u32 for @stripe_nr variables

- Replace unnecessary div64 calls with regular modulo and division
  32bit division and modulo are much faster than 64bit operations, and
  we are finally free of the div64 fear at least in those involved
  functions.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: replace map_lookup->stripe_len by BTRFS_STRIPE_LEN
Qu Wenruo [Fri, 17 Feb 2023 05:36:58 +0000 (13:36 +0800)]
btrfs: replace map_lookup->stripe_len by BTRFS_STRIPE_LEN

Currently btrfs doesn't support stripe lengths other than 64KiB.
This is already set in the tree-checker.

There is really no meaning to record that fixed value in map_lookup for
now, and can all be replaced with BTRFS_STRIPE_LEN.

Furthermore we can use the fix stripe length to do the following
optimization:

- Use BTRFS_STRIPE_LEN_SHIFT to replace some 64bit division
  Now we only need to do a right shift.

  And the value of BTRFS_STRIPE_LEN itself is already too large for bit
  shift, thus if we accidentally use BTRFS_STRIPE_LEN to do bit shift,
  a compiler warning would be triggered.

  Thus this bit shift optimization would be safe.

- Use BTRFS_STRIPE_LEN_MASK to calculate the offset inside a stripe

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: move all btree inode initialization into btrfs_init_btree_inode
Christoph Hellwig [Sun, 19 Feb 2023 18:10:22 +0000 (19:10 +0100)]
btrfs: move all btree inode initialization into btrfs_init_btree_inode

Move the remaining code that deals with initializing the btree
inode into btrfs_init_btree_inode instead of splitting it between
that helpers and its only caller.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: switch search_file_offset_in_bio to return bool
Anand Jain [Fri, 10 Feb 2023 16:15:55 +0000 (00:15 +0800)]
btrfs: switch search_file_offset_in_bio to return bool

Function search_file_offset_in_bio() finds the file offset in the
file_offset_ret, and we use the return value to indicate if it is
successful, so use bool.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: avoid reusing return variable in nested block in btrfs_lookup_bio_sums
Anand Jain [Fri, 10 Feb 2023 16:15:54 +0000 (00:15 +0800)]
btrfs: avoid reusing return variable in nested block in btrfs_lookup_bio_sums

The function btrfs_lookup_bio_sums() and a nested if statement declare
ret respectively as blk_status_t and int.

There is no need to store the return value of
search_file_offset_in_bio() to ret as this is a one-time call.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: open code btrfs_csum_ptr
Johannes Thumshirn [Fri, 10 Feb 2023 10:50:08 +0000 (02:50 -0800)]
btrfs: open code btrfs_csum_ptr

Remove btrfs_csum_ptr() and fold it into it's only caller.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: raid56: no need for irqsafe locking
Christoph Hellwig [Fri, 20 Jan 2023 07:46:57 +0000 (08:46 +0100)]
btrfs: raid56: no need for irqsafe locking

These days all the operations that take locks in the raid56.c code are
run from user context (mostly workqueues).  Drop all the irqsafe locking
that is not required any more.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: abort the transaction if we get an error during snapshot drop
Josef Bacik [Tue, 7 Feb 2023 16:57:25 +0000 (11:57 -0500)]
btrfs: abort the transaction if we get an error during snapshot drop

We were seeing weird errors when we were testing our btrfs backports
before we had the incorrect level check fix.  These errors appeared to
be improper error handling, but error injection testing uncovered that
the errors were a result of corruption that occurred from improper error
handling during snapshot delete.

With snapshot delete if we encounter any errors during walk_down or
walk_up we'll simply return an error, we won't abort the transaction.
This is problematic because we will be dropping references for nodes and
leaves along the way, and if we fail in the middle we will leave the
file system corrupt because we don't know where we left off in the drop.

Fix this by making sure we abort if we hit any errors during the walk
down or walk up operations, as we have no idea what operations could
have been left half done at this point.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: handle errors in walk_down_tree properly
Josef Bacik [Tue, 7 Feb 2023 16:57:24 +0000 (11:57 -0500)]
btrfs: handle errors in walk_down_tree properly

We can get errors in walk_down_proc as we try and lookup extent info for
the snapshot dropping to act on.  However if we get an error we simply
return 1 which indicates we're done with walking down, which will lead
us to improperly continue with the snapshot drop with the incorrect
information.  Instead break if we get any error from walk_down_proc or
do_walk_down, and handle the case of ret == 1 by returning 0, otherwise
return the ret value that we have.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: drop root refs properly when orphan cleanup fails
Josef Bacik [Tue, 7 Feb 2023 16:57:23 +0000 (11:57 -0500)]
btrfs: drop root refs properly when orphan cleanup fails

When we mount the file system we do something like this:

while (1) {
lookup fs roots;

for (i = 0; i < num_roots; i++) {
ret = btrfs_orphan_cleanup(roots[i]);
if (ret)
break;
btrfs_put_root(roots[i]);
}
}

for (; i < num_roots; i++)
btrfs_put_root(roots[i]);

As you can see if we break in that inner loop we just go back to the
outer loop and lose the fact that we have to drop references on the
remaining roots we looked up.  Fix this by making an out label and
jumping to that on error so we don't leak a reference to the roots we
looked up.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: add missing iputs on orphan cleanup failure
Josef Bacik [Tue, 7 Feb 2023 16:57:22 +0000 (11:57 -0500)]
btrfs: add missing iputs on orphan cleanup failure

We missed a couple of iput()s in the orphan cleanup failure paths, add
them so we don't get refcount errors. The iput needs to be done in the
check and not under a common label due to the way the code is
structured.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: handle errors from btrfs_read_node_slot in split
Josef Bacik [Tue, 7 Feb 2023 16:57:21 +0000 (11:57 -0500)]
btrfs: handle errors from btrfs_read_node_slot in split

While investigating a problem with error injection I tripped over
curious behavior in the node/leaf splitting code.  If we get an EIO when
trying to read either the left or right leaf/node for splitting we'll
simply treat the node as if it were full and continue on.  The end
result of this isn't too bad, we simply end up allocating a block when
we may have pushed items into the adjacent blocks.

However this does essentially allow us to continue to modify a file
system that we've gotten errors on, either from a bad disk or csum
mismatch or other corruption.  This isn't particularly safe, so instead
handle these btrfs_read_node_slot() usages differently.  We allow you to
pass in any slot, the idea being that we save some code if the slot
number is outside of the range of the parent.  This means we treat all
errors the same, when in reality we only want to ignore -ENOENT.

Fix this by changing how we call btrfs_read_node_slot(), which is to
only call it for slots we know are valid.  This way if we get an error
back from reading the block we can properly pass the error up the chain.
This was validated with the error injection testing I was doing.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: replace BUG_ON with ASSERT in btrfs_read_node_slot
Josef Bacik [Tue, 7 Feb 2023 16:57:20 +0000 (11:57 -0500)]
btrfs: replace BUG_ON with ASSERT in btrfs_read_node_slot

In btrfs_read_node_slot() we have a BUG_ON() that can be converted to an
ASSERT(), it's from an extent buffer and the level is validated at the
time it's read from disk.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
18 months agobtrfs: use btrfs_handle_fs_error in btrfs_fill_super
Josef Bacik [Tue, 7 Feb 2023 16:57:19 +0000 (11:57 -0500)]
btrfs: use btrfs_handle_fs_error in btrfs_fill_super

While trying to track down a lost EIO problem I hit the following
assertion while doing my error injection testing

  BTRFS warning (device nvme1n1): transaction 1609 (with 180224 dirty metadata bytes) is not committed
  assertion failed: !found, in fs/btrfs/disk-io.c:4456
  ------------[ cut here ]------------
  kernel BUG at fs/btrfs/messages.h:169!
  invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
  CPU: 0 PID: 1445 Comm: mount Tainted: G        W          6.2.0-rc5+ #3
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014
  RIP: 0010:btrfs_assertfail.constprop.0+0x18/0x1a
  RSP: 0018:ffffb95fc3b0bc68 EFLAGS: 00010286
  RAX: 0000000000000034 RBX: ffff9941c2ac2000 RCX: 0000000000000000
  RDX: 0000000000000001 RSI: ffffffffb6741f7d RDI: 00000000ffffffff
  RBP: ffff9941c2ac2428 R08: 0000000000000000 R09: ffffb95fc3b0bb38
  R10: 0000000000000003 R11: ffffffffb71438a8 R12: ffff9941c2ac2428
  R13: ffff9941c2ac2450 R14: ffff9941c2ac2450 R15: 000000000002c000
  FS:  00007fcea2d07800(0000) GS:ffff9941fbc00000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 00007f00cc7c83a8 CR3: 000000010c686000 CR4: 0000000000350ef0
  Call Trace:
   <TASK>
   close_ctree+0x426/0x48f
   btrfs_mount_root.cold+0x7e/0xee
   ? legacy_parse_param+0x2b/0x220
   legacy_get_tree+0x2b/0x50
   vfs_get_tree+0x29/0xc0
   vfs_kern_mount.part.0+0x73/0xb0
   btrfs_mount+0x11d/0x3d0
   ? legacy_parse_param+0x2b/0x220
   legacy_get_tree+0x2b/0x50
   vfs_get_tree+0x29/0xc0
   path_mount+0x438/0xa40
   __x64_sys_mount+0xe9/0x130
   do_syscall_64+0x3e/0x90
   entry_SYSCALL_64_after_hwframe+0x72/0xdc

This is because the error injection did an EIO for the root inode lookup
and we simply jumped to closing the ctree.  However because we didn't
mark the file system as having an error we skipped all of the broken
transaction cleanup stuff, and thus triggered this ASSERT().  Fix this
by calling btrfs_handle_fs_error() in this case so we have the error set
on the file system.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
19 months agoLinux 6.3-rc7
Linus Torvalds [Sun, 16 Apr 2023 22:23:53 +0000 (15:23 -0700)]
Linux 6.3-rc7

19 months agoMerge tag 'sched_urgent_for_v6.3_rc7' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 16 Apr 2023 17:33:43 +0000 (10:33 -0700)]
Merge tag 'sched_urgent_for_v6.3_rc7' of git://git./linux/kernel/git/tip/tip

Pull scheduler fix from Borislav Petkov:

 - Do not pull tasks to the local scheduling group if its average load
   is higher than the average system load

* tag 'sched_urgent_for_v6.3_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Fix imbalance overflow

19 months agoMerge tag 'x86_urgent_for_v6.3_rc7' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 16 Apr 2023 17:28:29 +0000 (10:28 -0700)]
Merge tag 'x86_urgent_for_v6.3_rc7' of git://git./linux/kernel/git/tip/tip

Pull x86 fix from Borislav Petkov:

 - Drop __init annotation from two rtc functions which get called after
   boot is done, in order to prevent a crash

* tag 'x86_urgent_for_v6.3_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/rtc: Remove __init for runtime functions

19 months agoMerge tag 'powerpc-6.3-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sun, 16 Apr 2023 16:55:18 +0000 (09:55 -0700)]
Merge tag 'powerpc-6.3-5' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fix from Michael Ellerman:

 - A fix for NUMA distance handling in the pseries SCM (pmem) driver.

   Thanks to Aneesh Kumar K.V.

* tag 'powerpc-6.3-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/papr_scm: Update the NUMA distance table for the target node

19 months agoMerge tag 'kbuild-fixes-v6.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 16 Apr 2023 16:46:32 +0000 (09:46 -0700)]
Merge tag 'kbuild-fixes-v6.3-3' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Drop debug info from purgatory objects again

 - Document that kernel.org provides prebuilt LLVM toolchains

 - Give up handling untracked files for source package builds

 - Avoid creating corrupted cpio when KBUILD_BUILD_TIMESTAMP is given
   with a pre-epoch data.

 - Change panic_show_mem() to a macro to handle variable-length argument

 - Compress tarballs on-the-fly again

* tag 'kbuild-fixes-v6.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: do not create intermediate *.tar for tar packages
  kbuild: do not create intermediate *.tar for source tarballs
  kbuild: merge cmd_archive_linux and cmd_archive_perf
  init/initramfs: Fix argument forwarding to panic() in panic_show_mem()
  initramfs: Check negative timestamp to prevent broken cpio archive
  kbuild: give up untracked files for source package builds
  Documentation/llvm: Add a note about prebuilt kernel.org toolchains
  purgatory: fix disabling debug info

19 months agoMerge tag '6.3-rc6-ksmbd-server-fix' of git://git.samba.org/ksmbd
Linus Torvalds [Sun, 16 Apr 2023 16:39:55 +0000 (09:39 -0700)]
Merge tag '6.3-rc6-ksmbd-server-fix' of git://git.samba.org/ksmbd

Pull ksmbd server fix from Steve French:
 "smb311 server preauth integrity negotiate context parsing fix (check
  for out of bounds access)"

* tag '6.3-rc6-ksmbd-server-fix' of git://git.samba.org/ksmbd:
  ksmbd: avoid out of bounds access in decode_preauth_ctxt()

19 months agokbuild: do not create intermediate *.tar for tar packages
Masahiro Yamada [Fri, 7 Apr 2023 10:16:29 +0000 (19:16 +0900)]
kbuild: do not create intermediate *.tar for tar packages

Commit 05e96e96a315 ("kbuild: use git-archive for source package
creation") split the compression as a separate step to factor out
the common build rules.

With the previous commit, we got back to the situation where source
tarballs are compressed on-the-fly.
There is no reason to keep the separate compression rules.

Generate the comressed tar packages directly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
19 months agokbuild: do not create intermediate *.tar for source tarballs
Masahiro Yamada [Fri, 7 Apr 2023 10:16:28 +0000 (19:16 +0900)]
kbuild: do not create intermediate *.tar for source tarballs

Since commit 05e96e96a315 ("kbuild: use git-archive for source package
creation"), a source tarball is created in two steps; create *.tar file
then compress it. I split the compression as a separate rule because I
just thought 'git archive' supported only gzip.

For other compression algorithms, I could pipe the two commands:

  $ git archive HEAD | xz > linux.tar.xz

I read git-archive(1) carefully, and I realized GIT had provided a
more elegant way:

  $ git -c tar.tar.xz.command=xz archive -o linux.tar.xz HEAD

This commit uses 'tar.tar.*.command' configuration to specify the
compression backend so we can compress a source tarball on-the-fly.

GIT commit 767cf4579f0e ("archive: implement configurable tar filters")
is more than a decade old, so it should be available on almost all build
environments.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
19 months agokbuild: merge cmd_archive_linux and cmd_archive_perf
Masahiro Yamada [Fri, 7 Apr 2023 10:16:27 +0000 (19:16 +0900)]
kbuild: merge cmd_archive_linux and cmd_archive_perf

The two commands, cmd_archive_linux and cmd_archive_perf, are similar.
Merge them to make it easier to add more changes to the git-archive
command.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
19 months agoinit/initramfs: Fix argument forwarding to panic() in panic_show_mem()
Benjamin Gray [Mon, 20 Mar 2023 23:05:34 +0000 (10:05 +1100)]
init/initramfs: Fix argument forwarding to panic() in panic_show_mem()

Forwarding variadic argument lists can't be done by passing a va_list
to a function with signature foo(...) (as panic() has). It ends up
interpreting the va_list itself as a single argument instead of
iterating it. printf() happily accepts it of course, leading to corrupt
output.

Convert panic_show_mem() to a macro to allow forwarding the arguments.
The function is trivial enough that it's easier than trying to introduce
a vpanic() variant.

Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
19 months agoinitramfs: Check negative timestamp to prevent broken cpio archive
Benjamin Gray [Mon, 20 Mar 2023 04:08:38 +0000 (15:08 +1100)]
initramfs: Check negative timestamp to prevent broken cpio archive

Similar to commit 4c9d410f32b3 ("initramfs: Check timestamp to prevent
broken cpio archive"), except asserts that the timestamp is
non-negative. This can happen when the KBUILD_BUILD_TIMESTAMP is a value
before UNIX epoch, which may be set when making reproducible builds that
don't want to look like they use a valid date.

While support for dates before 1970 might not be supported, this is more
about preventing undetected CPIO corruption. The printf's use a minimum
length format specifier, and will happily make the field longer than 8
characters if they need to.

Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Tested-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
19 months agoMerge tag '6.3-rc6-smb311-client-negcontext-fix' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sun, 16 Apr 2023 01:37:51 +0000 (18:37 -0700)]
Merge tag '6.3-rc6-smb311-client-negcontext-fix' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fix from Steve French:
 "Small client fix for better checking for smb311 negotiate context
  overflows, also marked for stable"

* tag '6.3-rc6-smb311-client-negcontext-fix' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: fix negotiate context parsing

19 months agoMerge tag 'ubifs-for-linus-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 15 Apr 2023 23:55:09 +0000 (16:55 -0700)]
Merge tag 'ubifs-for-linus-6.3-rc7' of git://git./linux/kernel/git/rw/ubifs

Pull UBI fixes from Richard Weinberger:

 - Fix failure to attach when vid_hdr offset equals the (sub)page size

 - Fix for a deadlock in UBI's worker thread

* tag 'ubifs-for-linus-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
  ubi: Fix failure attaching when vid_hdr offset equals to (sub)page size
  ubi: Fix deadlock caused by recursively holding work_sem

19 months agocifs: fix negotiate context parsing
David Disseldorp [Thu, 6 Apr 2023 22:34:11 +0000 (00:34 +0200)]
cifs: fix negotiate context parsing

smb311_decode_neg_context() doesn't properly check against SMB packet
boundaries prior to accessing individual negotiate context entries. This
is due to the length check omitting the eight byte smb2_neg_context
header, as well as incorrect decrementing of len_of_ctxts.

Fixes: 5100d8a3fe03 ("SMB311: Improve checking of negotiate security contexts")
Reported-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Steve French <stfrench@microsoft.com>
19 months agoMerge tag 'i2c-for-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 15 Apr 2023 18:06:49 +0000 (11:06 -0700)]
Merge tag 'i2c-for-6.3-rc7' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Just two driver fixes"

* tag 'i2c-for-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: ocores: generate stop condition after timeout in polling mode
  i2c: mchp-pci1xxxx: Update Timing registers

19 months agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 15 Apr 2023 17:49:47 +0000 (10:49 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fix from James Bottomley:
 "One small fix to SCSI Enclosure Services to fix a regression caused by
  another recent fix"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: ses: Handle enclosure with just a primary component gracefully

19 months agoMerge tag 'block-6.3-2023-04-14' of git://git.kernel.dk/linux
Linus Torvalds [Sat, 15 Apr 2023 17:39:18 +0000 (10:39 -0700)]
Merge tag 'block-6.3-2023-04-14' of git://git.kernel.dk/linux

Pull block fix from Jens Axboe:
 "A single NVMe quirk entry addition"

* tag 'block-6.3-2023-04-14' of git://git.kernel.dk/linux:
  nvme-pci: add NVME_QUIRK_BOGUS_NID for T-FORCE Z330 SSD

19 months agoMerge tag 'io_uring-6.3-2023-04-14' of git://git.kernel.dk/linux
Linus Torvalds [Sat, 15 Apr 2023 17:29:53 +0000 (10:29 -0700)]
Merge tag 'io_uring-6.3-2023-04-14' of git://git.kernel.dk/linux

Pull io_uring fix from Jens Axboe:
 "Just a small tweak to when task_work needs redirection, marked for
  stable as well"

* tag 'io_uring-6.3-2023-04-14' of git://git.kernel.dk/linux:
  io_uring: complete request via task work in case of DEFER_TASKRUN

19 months agoMerge tag 'riscv-for-linus-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 14 Apr 2023 17:44:48 +0000 (10:44 -0700)]
Merge tag 'riscv-for-linus-6.3-rc7' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - A fix for a missing fence when generating the NOMMU sigreturn
   trampoline

 - A set of fixes for early DTB handling of reserved memory nodes

* tag 'riscv-for-linus-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: No need to relocate the dtb as it lies in the fixmap region
  riscv: Do not set initial_boot_params to the linear address of the dtb
  riscv: Move early dtb mapping into the fixmap region
  riscv: add icache flush for nommu sigreturn trampoline

19 months agoMerge tag 'acpi-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 14 Apr 2023 17:37:07 +0000 (10:37 -0700)]
Merge tag 'acpi-6.3-rc7' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These add two ACPI-related quirks:

   - Add a quirk to force StorageD3Enable on AMD Picasso systems (Mario
     Limonciello)

   - Add an ACPI IRQ override quirk for ASUS ExpertBook B1502CBA (Paul
     Menzel)"

* tag 'acpi-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: resource: Skip IRQ override on ASUS ExpertBook B1502CBA
  ACPI: x86: utils: Add Picasso to the list for forcing StorageD3Enable

19 months agoMerge tag 'pm-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 14 Apr 2023 17:25:30 +0000 (10:25 -0700)]
Merge tag 'pm-6.3-rc7' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fix from Rafael Wysocki:
 "Make the amd-pstate cpufreq driver take all of the possible
  combinations of the 'old' and 'new' status values correctly while
  changing the operation mode via sysfs (Wyes Karny)"

* tag 'pm-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  amd-pstate: Fix amd_pstate mode switch

19 months agoMerge tag 'thermal-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 14 Apr 2023 17:19:18 +0000 (10:19 -0700)]
Merge tag 'thermal-6.3-rc7' of git://git./linux/kernel/git/rafael/linux-pm

Pull thermal control fix from Rafael Wysocki:
 "Modify the Intel thermal throttling code to avoid updating unsupported
  status clearing mask bits which causes the kernel to complain about
  unchecked MSR access (Srinivas Pandruvada)"

* tag 'thermal-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal: intel: Avoid updating unsupported THERM_STATUS_CLEAR mask bits

19 months agoMerge tag 'sound-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 14 Apr 2023 17:13:54 +0000 (10:13 -0700)]
Merge tag 'sound-6.3-rc7' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A collection of small fixes.

  At this time, quite a few fixes for the old PCI drivers are found.
  Although they are not regression fixes, I took these as they are
  materials for stable kernels.

  In addition, a couple of regression fixes and another couple of
  HD-audio quirks are included"

* tag 'sound-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/hdmi: disable KAE for Intel DG2
  ALSA: hda/realtek: Add quirks for Lenovo Z13/Z16 Gen2
  ALSA: hda: patch_realtek: add quirk for Asus N7601ZM
  ALSA: firewire-tascam: add missing unwind goto in snd_tscm_stream_start_duplex()
  ALSA: emu10k1: don't create old pass-through playback device on Audigy
  ALSA: emu10k1: fix capture interrupt handler unlinking
  ALSA: hda/sigmatel: fix S/PDIF out on Intel D*45* motherboards
  ALSA: hda/sigmatel: add pin overrides for Intel DP45SG motherboard
  ALSA: i2c/cs8427: fix iec958 mixer control deactivation

19 months agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Linus Torvalds [Fri, 14 Apr 2023 17:06:50 +0000 (10:06 -0700)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "We had a fairly slow cycle on the rc side this time, here are the
  accumulated fixes, mostly in drivers:

   - irdma should not generate extra completions during flushing

   - Fix several memory leaks

   - Do not get confused in irdma's iwarp mode if IPv6 is present

   - Correct a link speed calculation in mlx5

   - Increase the EQ/WQ limits on erdma as they are too small for big
     applications

   - Use the right math for erdma's inline mtt feature

   - Make erdma probing more robust to boot time ordering differences

   - Fix a KMSAN crash in CMA due to uninitialized qkey"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/core: Fix GID entry ref leak when create_ah fails
  RDMA/cma: Allow UD qp_type to join multicast only
  RDMA/erdma: Defer probing if netdevice can not be found
  RDMA/erdma: Inline mtt entries into WQE if supported
  RDMA/erdma: Update default EQ depth to 4096 and max_send_wr to 8192
  RDMA/erdma: Fix some typos
  IB/mlx5: Add support for 400G_8X lane speed
  RDMA/irdma: Add ipv4 check to irdma_find_listener()
  RDMA/irdma: Increase iWARP CM default rexmit count
  RDMA/irdma: Fix memory leak of PBLE objects
  RDMA/irdma: Do not generate SW completions for NOPs

19 months agoMerge branch 'acpi-x86'
Rafael J. Wysocki [Fri, 14 Apr 2023 13:15:32 +0000 (15:15 +0200)]
Merge branch 'acpi-x86'

Merge a quirk to force StorageD3Enable on AMD Picasso systems (Mario
Limonciello).

* acpi-x86:
  ACPI: x86: utils: Add Picasso to the list for forcing StorageD3Enable

19 months agoio_uring: complete request via task work in case of DEFER_TASKRUN
Ming Lei [Fri, 14 Apr 2023 07:53:13 +0000 (15:53 +0800)]
io_uring: complete request via task work in case of DEFER_TASKRUN

So far io_req_complete_post() only covers DEFER_TASKRUN by completing
request via task work when the request is completed from IOWQ.

However, uring command could be completed from any context, and if io
uring is setup with DEFER_TASKRUN, the command is required to be
completed from current context, otherwise wait on IORING_ENTER_GETEVENTS
can't be wakeup, and may hang forever.

The issue can be observed on removing ublk device, but turns out it is
one generic issue for uring command & DEFER_TASKRUN, so solve it in
io_uring core code.

Fixes: e6aeb2721d3b ("io_uring: complete all requests in task context")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/linux-block/b3fc9991-4c53-9218-a8cc-5b4dd3952108@kernel.dk/
Reported-by: Jens Axboe <axboe@kernel.dk>
Cc: Kanchan Joshi <joshi.k@samsung.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
19 months agoMerge branch 'nvme-6.3' of git://git.infradead.org/nvme into block-6.3
Jens Axboe [Fri, 14 Apr 2023 12:29:00 +0000 (06:29 -0600)]
Merge branch 'nvme-6.3' of git://git.infradead.org/nvme into block-6.3

Pull NVMe fix from Christoph.

* 'nvme-6.3' of git://git.infradead.org/nvme:
  nvme-pci: add NVME_QUIRK_BOGUS_NID for T-FORCE Z330 SSD

19 months agoALSA: hda/hdmi: disable KAE for Intel DG2
Kai Vehmanen [Thu, 13 Apr 2023 19:11:53 +0000 (22:11 +0300)]
ALSA: hda/hdmi: disable KAE for Intel DG2

Use of keep-alive (KAE) has resulted in loss of audio on some A750/770
cards as the transition from keep-alive to stream playback is not
working as expected. As there is limited benefit of the new KAE mode
on discrete cards, revert back to older silent-stream implementation
on these systems.

Cc: stable@vger.kernel.org
Fixes: 15175a4f2bbb ("ALSA: hda/hdmi: add keep-alive support for ADL-P and DG2")
Link: https://gitlab.freedesktop.org/drm/intel/-/issues/8307
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20230413191153.3692049-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
19 months agonvme-pci: add NVME_QUIRK_BOGUS_NID for T-FORCE Z330 SSD
Duy Truong [Fri, 14 Apr 2023 00:55:48 +0000 (17:55 -0700)]
nvme-pci: add NVME_QUIRK_BOGUS_NID for T-FORCE Z330 SSD

Added a quirk to fix the TeamGroup T-Force Cardea Zero Z330 SSDs reporting
duplicate NGUIDs.

Signed-off-by: Duy Truong <dory@dory.moe>
Cc: stable@vger.kernel.org
Signed-off-by: Christoph Hellwig <hch@lst.de>
19 months agoriscv: No need to relocate the dtb as it lies in the fixmap region
Alexandre Ghiti [Wed, 29 Mar 2023 08:19:32 +0000 (10:19 +0200)]
riscv: No need to relocate the dtb as it lies in the fixmap region

We used to access the dtb via its linear mapping address but now that the
dtb early mapping was moved in the fixmap region, we can keep using this
address since it is present in swapper_pg_dir, and remove the dtb
relocation.

Note that the relocation was wrong anyway since early_memremap() is
restricted to 256K whereas the maximum fdt size is 2MB.

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230329081932.79831-4-alexghiti@rivosinc.com
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
19 months agoriscv: Do not set initial_boot_params to the linear address of the dtb
Alexandre Ghiti [Wed, 29 Mar 2023 08:19:31 +0000 (10:19 +0200)]
riscv: Do not set initial_boot_params to the linear address of the dtb

early_init_dt_verify() is already called in parse_dtb() and since the dtb
address does not change anymore (it is now in the fixmap region), no need
to reset initial_boot_params by calling early_init_dt_verify() again.

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20230329081932.79831-3-alexghiti@rivosinc.com
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>