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| author | Chao Yu <yuchao0@huawei.com> | 2016-09-18 23:30:07 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-09-22 11:43:06 -0700 |
| commit | 8b038c70dfe4fd7b62573917a9e976f826ac6ad3 (patch) | |
| tree | 175fe3a2f6b72002259feb601f0de64b77de20f1 | |
| parent | 866969668aebe9626c083b9ababc8f88454ce049 (diff) | |
| download | linux-8b038c70dfe4fd7b62573917a9e976f826ac6ad3.tar.gz linux-8b038c70dfe4fd7b62573917a9e976f826ac6ad3.tar.bz2 linux-8b038c70dfe4fd7b62573917a9e976f826ac6ad3.zip | |
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>
| -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 528c3c0d55a2..25e3c302b72f 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -34,6 +34,11 @@ static void f2fs_read_end_io(struct bio *bio) struct bio_vec *bvec; int i; +#ifdef CONFIG_F2FS_FAULT_INJECTION + if (time_to_inject(FAULT_IO)) + bio->bi_error = -EIO; +#endif + if (f2fs_bio_encrypted(bio)) { if (bio->bi_error) { fscrypt_release_ctx(bio->bi_private); diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 951b9b3bc5f3..f28b3f8fa72b 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -46,6 +46,7 @@ enum { FAULT_BLOCK, FAULT_DIR_DEPTH, FAULT_EVICT_INODE, + FAULT_IO, FAULT_MAX, }; @@ -77,6 +78,8 @@ 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 555217fe43ce..29e3cf4ccf1b 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) |