This patch supports to inject fault into f2fs_is_valid_blkaddr() to
simulate accessing inconsistent data/meta block addressses from caller.
Usage:
a) echo 262144 > /sys/fs/f2fs/<dev>/inject_type or
b) mount -o fault_type=262144 <dev> <mountpoint>
Signed-off-by: Chao Yu <c...@kernel.org>
---
Documentation/filesystems/f2fs.rst | 1 +
fs/f2fs/checkpoint.c | 5 +++++
fs/f2fs/f2fs.h | 1 +
fs/f2fs/super.c | 1 +
4 files changed, 8 insertions(+)
diff --git a/Documentation/filesystems/f2fs.rst
b/Documentation/filesystems/f2fs.rst
index 6f19e7f9e908..3bca70fff5ea 100644
--- a/Documentation/filesystems/f2fs.rst
+++ b/Documentation/filesystems/f2fs.rst
@@ -199,6 +199,7 @@ fault_type=%d Support configuring fault
injection type, should be
FAULT_SLAB_ALLOC 0x000008000
FAULT_DQUOT_INIT 0x000010000
FAULT_LOCK_OP 0x000020000
+ FAULT_BLKADDR 0x000040000
=================== ===========
mode=%s Control block allocation mode which supports
"adaptive"
and "lfs". In "lfs" mode, there should be no random
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 109e96c15b84..2a5d9256a6f4 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -168,6 +168,11 @@ static bool __is_bitmap_valid(struct f2fs_sb_info *sbi,
block_t blkaddr,
bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
block_t blkaddr, int type)
{
+ if (time_to_inject(sbi, FAULT_BLKADDR)) {
+ f2fs_show_injection_info(sbi, FAULT_BLKADDR);
+ return false;
+ }
+
switch (type) {
case META_NAT:
break;
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 3a63125ffdfd..fa9ac681f71c 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -60,6 +60,7 @@ enum {
FAULT_SLAB_ALLOC,
FAULT_DQUOT_INIT,
FAULT_LOCK_OP,
+ FAULT_BLKADDR,
FAULT_MAX,
};
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 787010893a12..fad333881ea2 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -61,6 +61,7 @@ const char *f2fs_fault_name[FAULT_MAX] = {
[FAULT_SLAB_ALLOC] = "slab alloc",
[FAULT_DQUOT_INIT] = "dquot initialize",
[FAULT_LOCK_OP] = "lock_op",
+ [FAULT_BLKADDR] = "invalid blkaddr",
};
void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
--
2.36.1
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
