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| author | Qu Wenruo <wqu@suse.com> | 2022-11-14 08:26:33 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-12-05 18:00:57 +0100 |
| commit | c5a415627be4758ebdd274de7148706d6713c7ec (patch) | |
| tree | 48d39865c7a6b5113bea94ac963a834b82c6110f /fs/btrfs/raid56.h | |
| parent | 97e3823933108cfc648bb08d5ad36251b6588164 (diff) | |
| download | linux-c5a415627be4758ebdd274de7148706d6713c7ec.tar.gz linux-c5a415627be4758ebdd274de7148706d6713c7ec.tar.bz2 linux-c5a415627be4758ebdd274de7148706d6713c7ec.zip | |
btrfs: raid56: prepare data checksums for later RMW verification
This is for later data checksum verification at RMW time.
This patch will try to allocate the needed memory for a locked rbio if
the rbio is for data exclusively (we don't want to handle mixed bg yet).
The memory will be released when the rbio is finished.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/raid56.h')
| -rw-r--r-- | fs/btrfs/raid56.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/btrfs/raid56.h b/fs/btrfs/raid56.h index a2e653e93fd8..7c73a443939e 100644 --- a/fs/btrfs/raid56.h +++ b/fs/btrfs/raid56.h @@ -129,6 +129,18 @@ struct btrfs_raid_bio { * Thus making it much harder to iterate. */ unsigned long *error_bitmap; + + /* + * Checksum buffer if the rbio is for data. The buffer should cover + * all data sectors (exlcuding P/Q sectors). + */ + u8 *csum_buf; + + /* + * Each bit represents if the corresponding sector has data csum found. + * Should only cover data sectors (excluding P/Q sectors). + */ + unsigned long *csum_bitmap; }; /* |