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f2fs: inject ENOSPC failures

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This patch injects ENOSPC failures.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2016-04-29 16:29:22 -07:00
parent c41f3cc3ae
commit cb78942b82
5 changed files with 29 additions and 0 deletions
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7
fs/f2fs/checkpoint.c
View File

@ -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

4
fs/f2fs/dir.c
View File

@ -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;

10
fs/f2fs/f2fs.h
View File

@ -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)) {

4
fs/f2fs/node.c
View File

@ -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;

4
fs/f2fs/super.c
View File

@ -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