diff options
| author | Christoph Hellwig <hch@lst.de> | 2021-10-19 16:44:03 +0300 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2021-11-01 20:28:45 +0300 |
| commit | c12d205dae09da9623c6a4c35a9b17088a9b9a71 (patch) | |
| tree | 822c392a96c2b2d209f2173c2d9e917ad6e871e3 /drivers/md/dm-integrity.c | |
| parent | 089975379d52e7b99f2baf76e0d45bf2176be2bf (diff) | |
| download | linux-c12d205dae09da9623c6a4c35a9b17088a9b9a71.tar.xz | |
dm integrity: use bvec_kmap_local in integrity_metadata
Using local kmaps slightly reduces the chances to stray writes, and
the bvec interface cleans up the code a little bit.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-integrity.c')
| -rw-r--r-- | drivers/md/dm-integrity.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c index dd78baf4c7af..d8180d2a4284 100644 --- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -1770,7 +1770,7 @@ static void integrity_metadata(struct work_struct *w) char *mem, *checksums_ptr; again: - mem = (char *)kmap_atomic(bv.bv_page) + bv.bv_offset; + mem = bvec_kmap_local(&bv); pos = 0; checksums_ptr = checksums; do { @@ -1780,7 +1780,7 @@ again: pos += ic->sectors_per_block << SECTOR_SHIFT; sector += ic->sectors_per_block; } while (pos < bv.bv_len && sectors_to_process && checksums != checksums_onstack); - kunmap_atomic(mem); + kunmap_local(mem); r = dm_integrity_rw_tag(ic, checksums, &dio->metadata_block, &dio->metadata_offset, checksums_ptr - checksums, dio->op == REQ_OP_READ ? TAG_CMP : TAG_WRITE); |