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authorChao Yu <chao@kernel.org>2021-12-12 17:17:51 +0800
committerJaegeuk Kim <jaegeuk@kernel.org>2022-01-04 13:20:56 -0800
commit3e0203893e0dc4f64e7dc65ff5ac70e970019827 (patch)
tree4a2ffb3614721d32d3aa0c199d57989b1109bb16
parentdd9d4a3a30d009c77139d0cab0f2d08b30fa3941 (diff)
downloadlinux-3e0203893e0dc4f64e7dc65ff5ac70e970019827.tar.bz2
f2fs: support fault injection to f2fs_trylock_op()
f2fs: support fault injection for f2fs_trylock_op() This patch supports to inject fault into f2fs_trylock_op(). Usage: a) echo 65536 > /sys/fs/f2fs/<dev>/inject_type or b) mount -o fault_type=65536 <dev> <mountpoint> Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
-rw-r--r--Documentation/filesystems/f2fs.rst1
-rw-r--r--fs/f2fs/f2fs.h5
-rw-r--r--fs/f2fs/super.c1
3 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/filesystems/f2fs.rst b/Documentation/filesystems/f2fs.rst
index d7b84695f56a..4a2426f0485a 100644
--- a/Documentation/filesystems/f2fs.rst
+++ b/Documentation/filesystems/f2fs.rst
@@ -198,6 +198,7 @@ fault_type=%d Support configuring fault injection type, should be
FAULT_WRITE_IO 0x000004000
FAULT_SLAB_ALLOC 0x000008000
FAULT_DQUOT_INIT 0x000010000
+ FAULT_LOCK_OP 0x000020000
=================== ===========
mode=%s Control block allocation mode which supports "adaptive"
and "lfs". In "lfs" mode, there should be no random
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index a9ed2fd3fffb..8601d5e979d4 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -56,6 +56,7 @@ enum {
FAULT_WRITE_IO,
FAULT_SLAB_ALLOC,
FAULT_DQUOT_INIT,
+ FAULT_LOCK_OP,
FAULT_MAX,
};
@@ -2095,6 +2096,10 @@ static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
{
+ if (time_to_inject(sbi, FAULT_LOCK_OP)) {
+ f2fs_show_injection_info(sbi, FAULT_LOCK_OP);
+ return 0;
+ }
return down_read_trylock(&sbi->cp_rwsem);
}
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 9acd76ea09ca..ca5783fa56d5 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -59,6 +59,7 @@ const char *f2fs_fault_name[FAULT_MAX] = {
[FAULT_WRITE_IO] = "write IO error",
[FAULT_SLAB_ALLOC] = "slab alloc",
[FAULT_DQUOT_INIT] = "dquot initialize",
+ [FAULT_LOCK_OP] = "lock_op",
};
void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,