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| author | Nikolay Borisov <nborisov@suse.com> | 2019-04-22 15:07:31 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-04-29 19:02:52 +0200 |
| commit | 51d470aeaa3a4ac5bdf98743ac1d32008e8dafa4 (patch) | |
| tree | 9428c09bab978a904767d79f5334609be3dd1307 /fs/btrfs/file-item.c | |
| parent | Btrfs: improve performance on fsync of files with multiple hardlinks (diff) | |
| download | linux-51d470aeaa3a4ac5bdf98743ac1d32008e8dafa4.tar.xz linux-51d470aeaa3a4ac5bdf98743ac1d32008e8dafa4.zip | |
btrfs: Document btrfs_csum_one_bio
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/btrfs/file-item.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index 5a3be16ca93d..d431ea8198e4 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -413,6 +413,16 @@ fail: return ret; } +/* + * btrfs_csum_one_bio - Calculates checksums of the data contained inside a bio + * @inode: Owner of the data inside the bio + * @bio: Contains the data to be checksummed + * @file_start: offset in file this bio begins to describe + * @contig: Boolean. If true/1 means all bio vecs in this bio are + * contiguous and they begin at @file_start in the file. False/0 + * means this bio can contains potentially discontigous bio vecs + * so the logical offset of each should be calculated separately. + */ blk_status_t btrfs_csum_one_bio(struct inode *inode, struct bio *bio, u64 file_start, int contig) { |