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btrfs: Add checker for EXTENT_CSUM
authorQu Wenruo <quwenruo.btrfs@gmx.com>
Wed, 23 Aug 2017 07:57:59 +0000 (16:57 +0900)
committerDavid Sterba <dsterba@suse.com>
Mon, 30 Oct 2017 11:27:58 +0000 (12:27 +0100)
commit4b865cab96fe2a30ed512cf667b354bd291b3b0a
treefd84b150029f991937277e62caa519d9da618f25
parent40c3c40947324d9f40bf47830c92c59a9bbadf4a
btrfs: Add checker for EXTENT_CSUM

EXTENT_CSUM checker is a relatively easy one, only needs to check:

1) Objectid
   Fixed to BTRFS_EXTENT_CSUM_OBJECTID

2) Key offset alignment
   Must be aligned to sectorsize

3) Item size alignedment
   Must be aligned to csum size

Signed-off-by: Qu Wenruo <quwenruo.btrfs@gmx.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/disk-io.c