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dm writecache: fix unnecessary NULL check warnings 

Remove NULL checks before vfree() to fix these warnings:
./drivers/md/dm-writecache.c:2008:2-7: WARNING: NULL check before some
freeing functions is not needed.
./drivers/md/dm-writecache.c:2024:2-7: WARNING: NULL check before some
freeing functions is not needed.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Tian Tao 2021-01-26 10:40:02 +08:00 committed by Mike Snitzer
parent cb728484a7
commit 21ec672ecf
1 changed files with 2 additions and 4 deletions
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6
drivers/md/dm-writecache.c
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@ -2004,8 +2004,7 @@ static void writecache_dtr(struct dm_target *ti)
if (wc->ssd_dev)
dm_put_device(ti, wc->ssd_dev);
if (wc->entries)
vfree(wc->entries);
vfree(wc->entries);
if (wc->memory_map) {
if (WC_MODE_PMEM(wc))
@ -2020,8 +2019,7 @@ static void writecache_dtr(struct dm_target *ti)
if (wc->dm_io)
dm_io_client_destroy(wc->dm_io);
if (wc->dirty_bitmap)
vfree(wc->dirty_bitmap);
vfree(wc->dirty_bitmap);
kfree(wc);
}