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| author | Mikulas Patocka <mpatocka@redhat.com> | 2021-06-06 16:13:16 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2021-06-14 11:45:30 -0400 |
| commit | 991bd8d7bc78966b4dc427b53a144f276bffcd52 (patch) | |
| tree | 2aa4fcb0d1d5d83b9e63fcfd00b12a792089e5c4 /drivers/md | |
| parent | 620cbe40ed10aebf596767e934ab42057c34ab04 (diff) | |
| download | linux-991bd8d7bc78966b4dc427b53a144f276bffcd52.tar.bz2 | |
dm writecache: commit just one block, not a full page
Some architectures have pages larger than 4k and committing a full
page causes needless overhead.
Fix this by writing a single block when committing the superblock.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-writecache.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c index 01c3f51f4270..e18bbfd3289b 100644 --- a/drivers/md/dm-writecache.c +++ b/drivers/md/dm-writecache.c @@ -532,11 +532,7 @@ static void ssd_commit_superblock(struct dm_writecache *wc) region.bdev = wc->ssd_dev->bdev; region.sector = 0; - region.count = PAGE_SIZE >> SECTOR_SHIFT; - - if (unlikely(region.sector + region.count > wc->metadata_sectors)) - region.count = wc->metadata_sectors - region.sector; - + region.count = wc->block_size >> SECTOR_SHIFT; region.sector += wc->start_sector; req.bi_op = REQ_OP_WRITE; |