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Commit cb78942b authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: inject ENOSPC failures 



This patch injects ENOSPC failures.

Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent c41f3cc3

fs/f2fs/checkpoint.c

+7 −0
Original line number Diff line number Diff line
@@ -474,6 +474,13 @@ int acquire_orphan_inode(struct f2fs_sb_info *sbi) 
	int err = 0;



	spin_lock(&im->ino_lock);



#ifdef CONFIG_F2FS_FAULT_INJECTION

	if (time_to_inject(FAULT_ORPHAN)) {

		spin_unlock(&im->ino_lock);

		return -ENOSPC;

	}

#endif

	if (unlikely(im->ino_num >= sbi->max_orphans))

		err = -ENOSPC;

	else

fs/f2fs/dir.c

+4 −0
Original line number Diff line number Diff line
@@ -537,6 +537,10 @@ int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name, 
	}



start:

#ifdef CONFIG_F2FS_FAULT_INJECTION

	if (time_to_inject(FAULT_DIR_DEPTH))

		return -ENOSPC;

#endif

	if (unlikely(current_depth == MAX_DIR_HASH_DEPTH))

		return -ENOSPC;

fs/f2fs/f2fs.h

+10 −0
Original line number Diff line number Diff line
@@ -41,6 +41,10 @@ 
enum {

	FAULT_KMALLOC,

	FAULT_PAGE_ALLOC,

	FAULT_ALLOC_NID,

	FAULT_ORPHAN,

	FAULT_BLOCK,

	FAULT_DIR_DEPTH,

	FAULT_MAX,

};
@@ -1087,6 +1091,12 @@ static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, 
	block_t	valid_block_count;



	spin_lock(&sbi->stat_lock);

#ifdef CONFIG_F2FS_FAULT_INJECTION

	if (time_to_inject(FAULT_BLOCK)) {

		spin_unlock(&sbi->stat_lock);

		return false;

	}

#endif

	valid_block_count =

		sbi->total_valid_block_count + (block_t)count;

	if (unlikely(valid_block_count > sbi->user_block_count)) {

fs/f2fs/node.c

+4 −0
Original line number Diff line number Diff line
@@ -1838,6 +1838,10 @@ bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) 
	struct f2fs_nm_info *nm_i = NM_I(sbi);

	struct free_nid *i = NULL;

retry:

#ifdef CONFIG_F2FS_FAULT_INJECTION

	if (time_to_inject(FAULT_ALLOC_NID))

		return false;

#endif

	if (unlikely(sbi->total_valid_node_count + 1 > nm_i->available_nids))

		return false;

fs/f2fs/super.c

+4 −0
Original line number Diff line number Diff line
@@ -46,6 +46,10 @@ atomic_t f2fs_ops; 
char *fault_name[FAULT_MAX] = {

	[FAULT_KMALLOC]		= "kmalloc",

	[FAULT_PAGE_ALLOC]	= "page alloc",

	[FAULT_ALLOC_NID]	= "alloc nid",

	[FAULT_ORPHAN]		= "orphan",

	[FAULT_BLOCK]		= "no more block",

	[FAULT_DIR_DEPTH]	= "too big dir depth",

};

#endif