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| author | Mikulas Patocka <mpatocka@redhat.com> | 2022-07-11 22:30:27 +0200 |
|---|---|---|
| committer | Mike Snitzer <snitzer@kernel.org> | 2022-07-14 21:52:31 +0200 |
| commit | 9bc0c92e4b82adb017026dbb2aa816b1ac2bef31 (patch) | |
| tree | 0f2face0503bb30e16a9582cd03244a3817284c1 /drivers/md/dm-writecache.c | |
| parent | dm kcopyd: use __GFP_HIGHMEM when allocating pages (diff) | |
| download | linux-9bc0c92e4b82adb017026dbb2aa816b1ac2bef31.tar.xz linux-9bc0c92e4b82adb017026dbb2aa816b1ac2bef31.zip | |
dm writecache: return void from functions
The functions writecache_map_remap_origin and writecache_bio_copy_ssd
only return a single value, thus they can be made to return void.
This helps simplify the following IO accounting changes.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Diffstat (limited to 'drivers/md/dm-writecache.c')
| -rw-r--r-- | drivers/md/dm-writecache.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c index d572135cd43f..9e14717c46a9 100644 --- a/drivers/md/dm-writecache.c +++ b/drivers/md/dm-writecache.c @@ -1329,8 +1329,8 @@ enum wc_map_op { WC_MAP_ERROR, }; -static enum wc_map_op writecache_map_remap_origin(struct dm_writecache *wc, struct bio *bio, - struct wc_entry *e) +static void writecache_map_remap_origin(struct dm_writecache *wc, struct bio *bio, + struct wc_entry *e) { if (e) { sector_t next_boundary = @@ -1338,8 +1338,6 @@ static enum wc_map_op writecache_map_remap_origin(struct dm_writecache *wc, stru if (next_boundary < bio->bi_iter.bi_size >> SECTOR_SHIFT) dm_accept_partial_bio(bio, next_boundary); } - - return WC_MAP_REMAP_ORIGIN; } static enum wc_map_op writecache_map_read(struct dm_writecache *wc, struct bio *bio) @@ -1366,14 +1364,15 @@ read_next_block: map_op = WC_MAP_REMAP; } } else { - map_op = writecache_map_remap_origin(wc, bio, e); + writecache_map_remap_origin(wc, bio, e); + map_op = WC_MAP_REMAP_ORIGIN; } return map_op; } -static enum wc_map_op writecache_bio_copy_ssd(struct dm_writecache *wc, struct bio *bio, - struct wc_entry *e, bool search_used) +static void writecache_bio_copy_ssd(struct dm_writecache *wc, struct bio *bio, + struct wc_entry *e, bool search_used) { unsigned bio_size = wc->block_size; sector_t start_cache_sec = cache_sector(wc, e); @@ -1419,8 +1418,6 @@ static enum wc_map_op writecache_bio_copy_ssd(struct dm_writecache *wc, struct b } else { writecache_schedule_autocommit(wc); } - - return WC_MAP_REMAP; } static enum wc_map_op writecache_map_write(struct dm_writecache *wc, struct bio *bio) @@ -1458,7 +1455,8 @@ static enum wc_map_op writecache_map_write(struct dm_writecache *wc, struct bio direct_write: wc->stats.writes_around++; e = writecache_find_entry(wc, bio->bi_iter.bi_sector, WFE_RETURN_FOLLOWING); - return writecache_map_remap_origin(wc, bio, e); + writecache_map_remap_origin(wc, bio, e); + return WC_MAP_REMAP_ORIGIN; } wc->stats.writes_blocked_on_freelist++; writecache_wait_on_freelist(wc); @@ -1469,10 +1467,12 @@ direct_write: wc->uncommitted_blocks++; wc->stats.writes_allocate++; bio_copy: - if (WC_MODE_PMEM(wc)) + if (WC_MODE_PMEM(wc)) { bio_copy_block(wc, bio, memory_data(wc, e)); - else - return writecache_bio_copy_ssd(wc, bio, e, search_used); + } else { + writecache_bio_copy_ssd(wc, bio, e, search_used); + return WC_MAP_REMAP; + } } while (bio->bi_iter.bi_size); if (unlikely(bio->bi_opf & REQ_FUA || wc->uncommitted_blocks >= wc->autocommit_blocks)) |