This patch injects ENOSPC failures. Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org> --- fs/f2fs/checkpoint.c | 7 +++++++ fs/f2fs/dir.c | 4 ++++ fs/f2fs/f2fs.h | 10 ++++++++++ fs/f2fs/node.c | 4 ++++ fs/f2fs/super.c | 4 ++++ 5 files changed, 29 insertions(+)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index ac87cd9..9169dab 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -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 diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index 6bd0595..50f42be 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -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; diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 02c2c96..659fdea 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -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)) { diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index af010f5..78b98db 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -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; diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 1715794..55e8eb0 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -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 -- 2.6.3 ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel