diff options
| author | Chao Yu <yuchao0@huawei.com> | 2016-09-18 23:30:07 +0800 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-13 12:34:07 +0200 |
| commit | f8f49dc46c3d55b877c5480ccb7c4e65d6d2d6c0 (patch) | |
| tree | 1fe26dc2cd206da23326308a36b8b07ff8af7b2c /fs | |
| parent | 0fcb13819a3634c9a59240daaeabcaadef46ba7f (diff) | |
f2fs: support IO error injection
This patch adds to support IO error injection for testing IO error
tolerance of f2fs.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/data.c | 5 | ||||
| -rw-r--r-- | fs/f2fs/f2fs.h | 3 | ||||
| -rw-r--r-- | fs/f2fs/super.c | 1 |
3 files changed, 9 insertions, 0 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 680590c88..426983284 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -35,6 +35,11 @@ static void f2fs_read_end_io(struct bio *bio, int err) struct bio_vec *bvec; int i; +#ifdef CONFIG_F2FS_FAULT_INJECTION + if (time_to_inject(FAULT_IO)) + err = -EIO; +#endif + if (f2fs_bio_encrypted(bio)) { if (err) { fscrypt_release_ctx(bio->bi_private); diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 0351fda55..8ab3a0709 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -47,6 +47,7 @@ enum { FAULT_BLOCK, FAULT_DIR_DEPTH, FAULT_EVICT_INODE, + FAULT_IO, FAULT_MAX, }; @@ -78,6 +79,8 @@ static inline bool time_to_inject(int type) return false; else if (type == FAULT_EVICT_INODE && !IS_FAULT_SET(type)) return false; + else if (type == FAULT_IO && !IS_FAULT_SET(type)) + return false; atomic_inc(&f2fs_fault.inject_ops); if (atomic_read(&f2fs_fault.inject_ops) >= f2fs_fault.inject_rate) { diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 850d10b6f..3d46c7e51 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -50,6 +50,7 @@ char *fault_name[FAULT_MAX] = { [FAULT_BLOCK] = "no more block", [FAULT_DIR_DEPTH] = "too big dir depth", [FAULT_EVICT_INODE] = "evict_inode fail", + [FAULT_IO] = "IO error", }; static void f2fs_build_fault_attr(unsigned int rate) |