From: Nikolay Borisov Date: Mon, 22 Apr 2019 13:07:31 +0000 (+0300) Subject: btrfs: Document btrfs_csum_one_bio X-Git-Tag: v5.2-rc1~163^2~22 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=51d470aeaa3a4ac5bdf98743ac1d32008e8dafa4;p=linux.git btrfs: Document btrfs_csum_one_bio Signed-off-by: Nikolay Borisov Signed-off-by: David Sterba --- 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 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, 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) {