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f2fs: detect bug_on in f2fs_wait_discard_bios

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Add bug_on to detect potential non-empty discard wait list.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2018-07-08 22:16:53 +08:00 • committed by Jaegeuk Kim
parent 648f2564d4
commit c13d317593
1 changed files with 2 additions and 0 deletions
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fs/f2fs/segment.c
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@ -1468,6 +1468,8 @@ bool f2fs_wait_discard_bios(struct f2fs_sb_info *sbi)
/* just to make sure there is no pending discard commands */ /* just to make sure there is no pending discard commands */
__wait_all_discard_cmd(sbi, NULL); __wait_all_discard_cmd(sbi, NULL);
f2fs_bug_on(sbi, atomic_read(&dcc->discard_cmd_cnt));
return dropped; return dropped;
} }