Yan [Fri, 16 Nov 2007 19:57:09 +0000 (14:57 -0500)]
Btrfs: Add full_scan parameter to find_search_start
This patch adds a new parameter 'full_scan' to 'find_search_start',
thereby 'find_search_start' can know whether 'find_free_extent' is in
full scan phrase. I feel that 'find_search_start' should skip calling
'btrfs_find_block_group' when 'find_free_extent' is in full scan
phrase. In my test on a 2GB volume, Oops occurs when space usage is
about 76%. After apply the patch, Oops occurs when space usage is
near 100%.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Fri, 16 Nov 2007 19:57:08 +0000 (14:57 -0500)]
Btrfs: Add block group pinned accounting back
This patch adds a helper function 'update_pinned_extents' to
extent-tree.c. The usage of the helper function is similar to
'update_block_group', the last parameter of the function indicates
pin vs unpin.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Josef Bacik [Fri, 16 Nov 2007 16:45:54 +0000 (11:45 -0500)]
xattr support for btrfs
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Sun, 11 Nov 2007 13:22:00 +0000 (08:22 -0500)]
Btrfs: Fix extent bit range testing
It could return the bit as set when there was actually a hole at the
very end of the range.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 8 Nov 2007 15:59:22 +0000 (10:59 -0500)]
Btrfs: Add readpages support
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 8 Nov 2007 15:59:05 +0000 (10:59 -0500)]
Btrfs: Avoid extent_buffer lru corruption
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 8 Nov 2007 02:08:16 +0000 (21:08 -0500)]
Btrfs: Allow large data extents in a single file to span into metadata block groups
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 8 Nov 2007 02:08:16 +0000 (21:08 -0500)]
Btrfs: Fix failure cleanups when allocating extent buffers fail
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 8 Nov 2007 02:08:01 +0000 (21:08 -0500)]
Btrfs: Use writepages for the metadata too
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Wed, 7 Nov 2007 18:31:09 +0000 (13:31 -0500)]
Properly delete csum item in btrfs_truncate_in_trans.
When 'item_end' is equal to 'inode->i_size', 'found_type' is updated
and current item is skipped. This behavior is correct for extent item,
but incorrect for csum item. For example, there is a csum item with
'offset == 0'. When deleting the inode, 'inode->i_size' is set to 0,
so the csum item isn't deleted.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 7 Nov 2007 18:31:03 +0000 (13:31 -0500)]
Btrfs: Change push_leaf_{leaf,right} to empty the src leave during item deletion
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 6 Nov 2007 20:09:29 +0000 (15:09 -0500)]
Fix recursive KM_USER1 usage in btrfs_realloc_node
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 6 Nov 2007 15:26:29 +0000 (10:26 -0500)]
Btrfs: Optimize allocations as we need to mix data and metadata into one group
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Tue, 6 Nov 2007 15:26:28 +0000 (10:26 -0500)]
Fix EXTENT_MAP_INLINE off by one in btrfs_drop_extents
Don't set hint_byte to EXTENT_MAP_INLINE when 'end == extent_end' or
'start == key.offset' . The inline extent will be truncated in these
cases.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Tue, 6 Nov 2007 15:26:26 +0000 (10:26 -0500)]
Btrfs: Fix u32 overflow in dirty_and_release_pages.
When calculating the size of inline extent, inode->i_size should also
be take into consideration, otherwise sys_write may drop some data
silently. You can test this bug by:
#dd if=/dev/zero bs=4k count=1 of=test_file
#dd if=/dev/zero bs=2k count=1 of=test_file conv=notrunc
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 6 Nov 2007 15:26:24 +0000 (10:26 -0500)]
Btrfs: Make defrag check nodes against the progress key to prevent repeating work
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Tue, 6 Nov 2007 15:25:25 +0000 (10:25 -0500)]
Btrfs: Properly update free space cache in __free_extent
When pin_down_bytes decides not to pin a block because it was from the
current transaction, make sure the in memory cache of free extents is updated
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 1 Nov 2007 23:45:34 +0000 (19:45 -0400)]
Btrfs: Add writepages support
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Thu, 1 Nov 2007 15:28:42 +0000 (11:28 -0400)]
Btrfs: small fixes for find_lock_delalloc_range.
There is a 'finish_wait', but no 'prepare_to_wait' . So I think that
the 'prepare_to_wait' is missing. The second change is according to
the name of variable.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Thu, 1 Nov 2007 15:28:41 +0000 (11:28 -0400)]
Btrfs: Fix typo and memory leak in extent-tree.c
This patch fixes a typo in update_block_group and memory leak in
btrfs_free_block_groups.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 1 Nov 2007 15:28:41 +0000 (11:28 -0400)]
Btrfs: Fix a number of inline extent problems that Yan Zheng reported.
The fixes do a number of things:
1) Most btrfs_drop_extent callers will try to leave the inline extents in
place. It can truncate bytes off the beginning of the inline extent if
required.
2) writepage can now update the inline extent, allowing mmap writes to
go directly into the inline extent.
3) btrfs_truncate_in_transaction truncates inline extents
4) extent_map.c fixed to not merge inline extent mappings and hole
mappings together
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 30 Oct 2007 20:56:53 +0000 (16:56 -0400)]
Btrfs: Fix PAGE_CACHE_SHIFT shifts on 32 bit machines
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 29 Oct 2007 18:36:41 +0000 (14:36 -0400)]
Add O_SYNC support to btrfs_file_write
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Mon, 29 Oct 2007 16:01:05 +0000 (12:01 -0400)]
Minor fix for btrfs_csum_file_block.
Execution should goto label 'insert' when 'btrfs_next_leaf' return a
non-zero value, otherwise the parameter 'slot' for
'btrfs_item_key_to_cpu' may be out of bounds. The original codes jump
to label 'insert' only when 'btrfs_next_leaf' return a negative
value.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Mon, 29 Oct 2007 15:41:07 +0000 (11:41 -0400)]
Fix inline extent handling in btrfs_get_extent
1. Reorder kmap and the test for 'page != NULL'
2. Zero-fill rest area of a block when inline extent isn't big enough.
3. Do not insert extent_map into the map tree when page == NULL.
(If insert the extent_map into the map tree, subsequent read requests
will find it in the map tree directly and the corresponding inline
extent data aren't copied into page by the the get_extent function.
extent_read_full_page can't handle that case)
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Mon, 29 Oct 2007 15:41:05 +0000 (11:41 -0400)]
Btrfs: Fix extent_map leak in extent_bmap
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 29 Oct 2007 14:55:05 +0000 (10:55 -0400)]
Btrfs: Compile fixes for 2.6.24-rc1
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Thu, 25 Oct 2007 19:49:25 +0000 (15:49 -0400)]
Fix ENOTEMPTY check in btrfs_rmdir
The ENOTEMPTY check in btrfs_rmdir isn't reliable. It's possible that
the backward search finds . or .. at first, then some other directory
entry. In that case, btrfs_rmdir delete . or .. improperly. The
patch also fixes a fs_mutex unlock issue in btrfs_rmdir.
--
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Thu, 25 Oct 2007 19:48:28 +0000 (15:48 -0400)]
btrfs_inode_by_name return random value.
When inode is found, the return value is from the uninitialized
variable 'ret'.
--
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 25 Oct 2007 19:43:18 +0000 (15:43 -0400)]
Btrfs: Tune the automatic defrag code
1) Forced defrag wasn't working properly (btrfsctl -d) because some
cache only checks were incorrect.
2) Defrag only the leaves unless in forced defrag mode.
3) Don't use complex logic to figure out if a leaf is needs defrag
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Thu, 25 Oct 2007 19:42:57 +0000 (15:42 -0400)]
Btrfs: Fix for insert_inline_extent to handle offset != 0
This modifies inline extent size calculation, so that
insert_inline_extent can handle the case that parameter 'offset' is
not zero; it also a few codes to zero uninitialized area in inline
extent.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 25 Oct 2007 19:42:57 +0000 (15:42 -0400)]
Btrfs: Fix split_leaf to detect when it is extending an item
When making room for a new item, it is ok to create an empty leaf, but
when making room to extend an item, split_leaf needs to make sure it
keeps the item we're extending in the path and make sure we don't end up
with an empty leaf.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Thu, 25 Oct 2007 19:42:57 +0000 (15:42 -0400)]
Btrfs: Off by one fixes in extent_map.c
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 25 Oct 2007 19:42:56 +0000 (15:42 -0400)]
Btrfs: Optimize csum insertion to create larger items when possible
This reduces the number of calls to btrfs_extend_item and greatly lowers
the cpu usage while writing large files.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 19 Oct 2007 18:01:21 +0000 (14:01 -0400)]
Btrfs: Fix split_leaf to avoid incorrect double splits
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 19 Oct 2007 14:39:41 +0000 (10:39 -0400)]
Btrfs: Avoid recursive KM_USER1 mappings in copy_extent_buffer
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 19 Oct 2007 13:23:27 +0000 (09:23 -0400)]
Btrfs: CPU usage optimizations in push and the extent_map code
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 19 Oct 2007 13:23:09 +0000 (09:23 -0400)]
Btrfs: Fix read/write_extent_buffer to use KM_USER1 instead of KM_USER0
This avoids recursive use of KM_USER0 during btrfs_file_write
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Jens Axboe [Fri, 19 Oct 2007 13:23:08 +0000 (09:23 -0400)]
Btrfs: sysfs compile fixup
Just use kobject_set_name(), that works in all kernels (I think...).
Kernels newer than 2.6.23 currently fail with:
/home/axboe/git/btrfs/btrfs-unstable/sysfs.c:188: error: unknown field
'name' specified in initializer
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Jens Axboe [Fri, 19 Oct 2007 13:23:07 +0000 (09:23 -0400)]
Btrfs: KM_IRQ0 usage in end_io handling
endio handling is typically called with interrupts disabled, but can
also be called with it enabled. So save interrupts before using KM_IRQ0
to be completely safe.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Jens Axboe [Fri, 19 Oct 2007 13:23:05 +0000 (09:23 -0400)]
Btrfs: Fix bi_end_io() functions on > 2.6.23 kernels
It now returns void and it is never called for partial completions, so
the bio->bi_size check must go.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Jens Axboe [Fri, 19 Oct 2007 13:22:59 +0000 (09:22 -0400)]
btrfs: 32-bit type problems
An assorted set of casts to get rid of the warnings on 32-bit archs.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan Zheng [Fri, 19 Oct 2007 13:22:56 +0000 (09:22 -0400)]
Btrfs: Properly setup root key while reading the root
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 19 Oct 2007 13:22:49 +0000 (09:22 -0400)]
Btrfs: Fix typo: owner is a 64 bit field
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 19 Oct 2007 13:22:41 +0000 (09:22 -0400)]
Btrfs: Default to 8k max packed tails
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:22:39 +0000 (16:22 -0400)]
Btrfs: Defrag only leaves, and only when the parent node has a single objectid
This allows us to defrag huge directories, but skip the expensive defrag
case in more common usage, where it does not help as much.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:22:25 +0000 (16:22 -0400)]
Btrfs: Add back file data checksumming
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:22:11 +0000 (16:22 -0400)]
Btrfs: Defrag: only walk into nodes with the defrag bit set
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:21:17 +0000 (16:21 -0400)]
Btrfs: balance_dirty_pages_ratelimited is causing problems, use nr == 1 always
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:19:46 +0000 (16:19 -0400)]
Btrfs: Large block related defrag optimizations
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:19:22 +0000 (16:19 -0400)]
Btrfs: Add back metadata checksumming
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:18:56 +0000 (16:18 -0400)]
Breakout BTRFS_SETGET_FUNCS into a separate C file, the inlines were too big.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:18:55 +0000 (16:18 -0400)]
Btrfs: extent_map optimizations to cut down on CPU usage
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:18:25 +0000 (16:18 -0400)]
Btrfs: Allow tails larger than one page
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:18:14 +0000 (16:18 -0400)]
Btrfs: Add an extent buffer LRU to reduce radix tree hits
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:17:44 +0000 (16:17 -0400)]
Btrfs: Fix allocation routines to avoid intermixing data and metadata allocations
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:17:34 +0000 (16:17 -0400)]
Btrfs: Add back the online defragging code
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:17:04 +0000 (16:17 -0400)]
Btrfs: Use an array of pages in the extent buffers to reduce the cost of find_get_page
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:16:28 +0000 (16:16 -0400)]
Btrfs: Cache extent buffer mappings
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:15:53 +0000 (16:15 -0400)]
Btrfs: Allow tree blocks larger than the page size
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:15:26 +0000 (16:15 -0400)]
Btrfs: Change the remaining radix trees used by extent-tree.c to extent_map trees
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:15:19 +0000 (16:15 -0400)]
Btrfs: Stop using radix trees for the block group cache
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:14:48 +0000 (16:14 -0400)]
Btrfs: Fix extent_buffer and extent_state leaks
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:14:41 +0000 (16:14 -0400)]
Btrfs: Go back to kmaps instead of page_address in extent_buffers
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:14:37 +0000 (16:14 -0400)]
Btrfs: Avoid memcpy where possible in extent_buffers
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:14:27 +0000 (16:14 -0400)]
Btrfs: Optimizations for the extent_buffer code
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 15 Oct 2007 20:14:19 +0000 (16:14 -0400)]
Btrfs: Create extent_buffer interface for large blocksizes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 20 Sep 2007 18:14:42 +0000 (14:14 -0400)]
btrfs_get_extent should treat inline extents as though they hold a whole block
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Christoph Hellwig [Mon, 17 Sep 2007 15:25:58 +0000 (11:25 -0400)]
Btrfs: factor page private preparations into a helper
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Mon, 17 Sep 2007 15:13:12 +0000 (11:13 -0400)]
Btrfs: Fix double free and off by one in inode.c
The first change removes potential double free, the second fix a off
by one error.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Mon, 17 Sep 2007 15:13:11 +0000 (11:13 -0400)]
Btrfs: truncate: don't update inode->i_blocks when extent is a hole
I think check whether extent is a hole before update 'inode->i_blocks'
is unconditional required. (original codes check it only when
del_item isn't equal to 0)
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Mon, 17 Sep 2007 15:08:52 +0000 (11:08 -0400)]
create btrfs_path slab with the correct size
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Mon, 17 Sep 2007 15:08:38 +0000 (11:08 -0400)]
fix found_type decrement in btrfs_truncate_in_trans
found_type has already been decreased by codes above the change, I
think decrease it by one again doesn't make sense.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 17 Sep 2007 15:00:51 +0000 (11:00 -0400)]
Btrfs: Fix duplicate ENOSPC checks in find_free_extent
find_free_extent would fail to wrap around to the start of the drive because
it was doing the enospc case checking twice in some cases, causing it
to return -ENOSPC early.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 17 Sep 2007 14:58:06 +0000 (10:58 -0400)]
Btrfs: Use balance_dirty_pages_nr on btree blocks
btrfs_btree_balance_dirty is changed to pass the number of pages dirtied
for more accurate dirty throttling. This lets the VM make better decisions
about when to force some writeback.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Fri, 14 Sep 2007 20:15:28 +0000 (16:15 -0400)]
Btrfs: Fix cache_block_group to catch holes at the start of the group
Cache block group was overly complex and missed free blocks at the very start
of the group. This patch simplifies things significantly.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Fri, 14 Sep 2007 14:23:29 +0000 (10:23 -0400)]
Btrfs: Fix off by one error in dirty_and_release_pages
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Christoph Hellwig [Fri, 14 Sep 2007 14:22:57 +0000 (10:22 -0400)]
split up btrfs_ioctl
Add a helper per ioctl function to make the code more readable.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Christoph Hellwig [Fri, 14 Sep 2007 14:22:47 +0000 (10:22 -0400)]
Btrfs: use unlocked_ioctl
No reason to grab the BKL before calling into the btrfs ioctl code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Jan Engelhardt [Fri, 14 Sep 2007 14:22:19 +0000 (10:22 -0400)]
Btrfs: Simplify makefile
Single-colons will do here.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 14 Sep 2007 13:43:53 +0000 (09:43 -0400)]
Btrfs: add modules_install target
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 14 Sep 2007 13:42:31 +0000 (09:42 -0400)]
Btrfs: Fix extra link count dec in rename
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 11 Sep 2007 23:45:31 +0000 (19:45 -0400)]
Btrfs: Added tag v0.8 for changeset
f5ce4cc64def
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 11 Sep 2007 15:15:39 +0000 (11:15 -0400)]
Btrfs: Find and remove dead roots the first time a root is loaded.
Dead roots are trees left over after a crash, and they were either in the
process of being removed or were waiting to be removed when the box crashed.
Before, a search of the entire tree of root pointers was done on mount
looking for dead roots. Now, the search is done the first time we load
a root.
This makes mount faster when there are a large number of snapshots, and it
enables the block accounting code to properly update the block counts on
the latest root as old versions of the root are reaped after a crash.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Christoph Hellwig [Tue, 11 Sep 2007 00:02:33 +0000 (20:02 -0400)]
Btrfs: [PATCH] extent_map: add writepage_end_io hook
XFS updates the ondisk inode size only after the data I/O has finished,
so it needs a hook when the writepage end_bio handler has finished.
Might not be worth applying as-is as the per-page callback is very
ineffcient. What XFS really wants is a callback when writeout of a
whole extent has completed. This delayed i_size updates scheme might
be worthwile for btrfs aswell, btw.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Christoph Hellwig [Tue, 11 Sep 2007 00:02:32 +0000 (20:02 -0400)]
Btrfs: [PATCH] extent_map: make the writepage_io hook optional
The writepage_io is not mandatory, e.g. my port of xfs to the extent_map
code does not have one for now. So handle a NULL pointer gracefully
here.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Christoph Hellwig [Tue, 11 Sep 2007 00:02:30 +0000 (20:02 -0400)]
Btrfs: [PATCH] extent_map: provide generic bmap
generic_bmap is completely trivial, while the extent to bh mapping in
btrfs is rather complex. So provide a extent_bmap instead that takes
a get_extent callback and can be used by filesystem using the extent_map
code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Christoph Hellwig [Tue, 11 Sep 2007 00:02:27 +0000 (20:02 -0400)]
Btrfs: [PATCH] extent_map: fix locking for bio completion
The bio completion handlers can be run in any context, e.g. when using
the old ide driver they run in hardirq context with irqs disabled so
lockdep rightfully warns about using write_lock_irq useage in these
handlers.
This patch switches clear_extent_bit and set_extent_bit to
write_lock_irqsave to fix this problem.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Christoph Hellwig [Tue, 11 Sep 2007 00:02:22 +0000 (20:02 -0400)]
[PATCH] btrfs: fix printk format warning
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 11 Sep 2007 00:00:27 +0000 (20:00 -0400)]
Btrfs: Reorder tests in set_extent_bit to properly find holes
Yan Zheng noticed that set_extent_bit was exiting too early when there
was a hole in the map. The fix is to reorder the tests to check for the
hole first.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 10 Sep 2007 23:58:36 +0000 (19:58 -0400)]
Btrfs: Add more synchronization before creating a snapshot
File data checksums are only done during writepage, so we have to make sure
all pages are written when the snapshot is taken. This also adds some
locking so that new writes don't race in and add new dirty pages.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 10 Sep 2007 23:58:16 +0000 (19:58 -0400)]
Add support for defragging files via btrfsctl -d. Avoid OOM on extent tree
defrag.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 30 Aug 2007 16:16:51 +0000 (12:16 -0400)]
Btrfs: remove extra drop_extent_cache call
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 30 Aug 2007 15:54:02 +0000 (11:54 -0400)]
Btrfs: fsx delalloc fixes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 30 Aug 2007 12:50:51 +0000 (08:50 -0400)]
Btrfs: Add file data csums back in via hooks in the extent map code
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 29 Aug 2007 13:11:44 +0000 (09:11 -0400)]
Btrfs: Use mount -o subvol to select the subvol directory instead of dev:
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Wed, 29 Aug 2007 13:11:44 +0000 (09:11 -0400)]
Btrfs: Fix oopsen in extent_tree.c during enospc
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Wed, 29 Aug 2007 13:11:44 +0000 (09:11 -0400)]
Btrfs: Add mount into directory support
Modified form of original patch from Christoph Hellwig to make btrfs
mount into the default subvolume by default.
mount /dev/somedevice:subvolumename to get other subvolumes or
mount /dev/somedevice:. to get the root
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Wed, 29 Aug 2007 13:11:44 +0000 (09:11 -0400)]
Btrfs: Fix mknod to properly send rdev info back to disk
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Wed, 29 Aug 2007 13:11:44 +0000 (09:11 -0400)]
Btrfs: ctree.c cleanups
Fixup a few buffer_head release errors, and fix an off by one in
balance_node_right.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
projects / platform / kernel / linux-exynos.git / log