Commit 8b038c70 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

f2fs: support IO error injection 



This patch adds to support IO error injection for testing IO error
tolerance of f2fs.

Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 86696966

fs/f2fs/data.c

+5 −0
Original line number Diff line number Diff line
@@ -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);

fs/f2fs/f2fs.h

+3 −0
Original line number Diff line number Diff line
@@ -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) {

fs/f2fs/super.c

+1 −0
Original line number Diff line number Diff line
@@ -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)