btrfs: use bio_for_each_segment_all in __btrfsic_submit_bio
authorChristoph Hellwig <hch@lst.de>
Fri, 25 Nov 2016 08:07:53 +0000 (09:07 +0100)
committerDavid Sterba <dsterba@suse.com>
Wed, 30 Nov 2016 12:45:20 +0000 (13:45 +0100)
commit1621f8f3f9cdfab43822aa54a84c2a0a5111b936
treeb5c9e11a5107d7137b1b7f2c6fc926935d4a46f9
parent4989d277eb4b36cc1aacf72725b53977c6b5260d
btrfs: use bio_for_each_segment_all in __btrfsic_submit_bio

And remove the bogus check for a NULL return value from kmap, which
can't happen.  While we're at it: I don't think that kmapping up to 256
will work without deadlocks on highmem machines, a better idea would
be to use vm_map_ram to map all of them into a single virtual address
range.  Incidentally that would also simplify the code a lot.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/check-integrity.c