提交 8b038c70 编写于 作者: C Chao Yu 提交者: Jaegeuk Kim

f2fs: support IO error injection

This patch adds to support IO error injection for testing IO error
tolerance of f2fs.
Signed-off-by: NChao Yu <yuchao0@huawei.com>
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
上级 86696966
......@@ -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);
......
......@@ -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) {
......
......@@ -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)
......
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