diff options
| author | Christoph Hellwig <hch@lst.de> | 2021-10-12 08:31:53 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2021-10-26 19:08:06 +0200 |
| commit | 3dcfbcce1b8749a6e62be11c41a797c98ecc4127 (patch) | |
| tree | 6f7b94f0041c191e783279beadb6ebdcca2d546f /fs | |
| parent | 11b66fa6eef3ecdcc7ae0e990b54b795a237a6e9 (diff) | |
| download | linux-3dcfbcce1b8749a6e62be11c41a797c98ecc4127.tar.gz | |
btrfs: use bvec_kmap_local in btrfs_csum_one_bio
Using local kmaps slightly reduces the chances to stray writes, and
the bvec interface cleans up the code a little bit.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/file-item.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index ddb9c7ee796f07..d1cbb64a78f3a2 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -708,12 +708,12 @@ blk_status_t btrfs_csum_one_bio(struct btrfs_inode *inode, struct bio *bio, index = 0; } - data = kmap_atomic(bvec.bv_page); - crypto_shash_digest(shash, data + bvec.bv_offset - + (i * fs_info->sectorsize), + data = bvec_kmap_local(&bvec); + crypto_shash_digest(shash, + data + (i * fs_info->sectorsize), fs_info->sectorsize, sums->sums + index); - kunmap_atomic(data); + kunmap_local(data); index += fs_info->csum_size; offset += fs_info->sectorsize; this_sum_bytes += fs_info->sectorsize; |