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f2fs: support configuring fault injection per superblock

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Previously, we only support global fault injection configuration, so that
when we configure type/rate of fault injection through sysfs, mount
option, it will influence all f2fs partition which is being used.

It is not make sence, since it will be not convenient if developer want
to test separated partitions with different fault injection rate/type
simultaneously, also it's not possible to enable fault injection in one
partition and disable fault injection in other one.

>From now on, we move global configuration of fault injection in module
into per-superblock, hence injection testing can be more flexible.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2016-09-23 21:30:09 +08:00
committed by Jaegeuk Kim
parent d32853de50
commit 1ecc0c5c50
10 changed files with 65 additions and 94 deletions
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2
fs/f2fs/node.c
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@@ -1839,7 +1839,7 @@ bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid)
struct free_nid *i = NULL;
retry:
#ifdef CONFIG_F2FS_FAULT_INJECTION
if (time_to_inject(FAULT_ALLOC_NID))
if (time_to_inject(sbi, FAULT_ALLOC_NID))
return false;
#endif
if (unlikely(sbi->total_valid_node_count + 1 > nm_i->available_nids))