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btrfs: scrub: fix target device intialization while setting up scrub context

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The commit "btrfs: scrub: inline helper scrub_setup_wr_ctx" inlined a
helper but wrongly sets up the target device. Incidentally there's a
local variable with the same name as a parameter in the previous
function, so this got caught during runtime as crash in test btrfs/027.

Reported-by: Chris Mason <clm@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2017-06-26 15:19:00 +02:00
parent bc42bda223
commit ded56184a5
1 changed files with 2 additions and 2 deletions

4
fs/btrfs/scrub.c
View file

@ -714,9 +714,9 @@ struct scrub_ctx *scrub_setup_ctx(struct btrfs_device *dev, int is_dev_replace)
mutex_init(&sctx->wr_lock); mutex_init(&sctx->wr_lock);
sctx->wr_curr_bio = NULL; sctx->wr_curr_bio = NULL;
if (is_dev_replace) { if (is_dev_replace) {
WARN_ON(!dev->bdev); WARN_ON(!fs_info->dev_replace.tgtdev);
sctx->pages_per_wr_bio = SCRUB_PAGES_PER_WR_BIO; sctx->pages_per_wr_bio = SCRUB_PAGES_PER_WR_BIO;
sctx->wr_tgtdev = dev; sctx->wr_tgtdev = fs_info->dev_replace.tgtdev;
atomic_set(&sctx->flush_all_writes, 0); atomic_set(&sctx->flush_all_writes, 0);
} }