This patch injects ENOSPC failures.
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
---
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
--
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