This is a note to let you know that I've just added the patch titled
f2fs: fix to set ipu policy
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
f2fs-fix-to-set-ipu-policy.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 34c1efe332e81df503a319ea801861ee3131da7f
Author: Yangtao Li <frank.li@xxxxxxxx>
Date: Mon Feb 6 22:43:08 2023 +0800
f2fs: fix to set ipu policy
[ Upstream commit c5bf83483382600988d7db5ffe9fcd1936b491fd ]
For LFS mode, it should update outplace and no need inplace update.
When using LFS mode for small-volume devices, IPU will not be used,
and the OPU writing method is actually used, but F2FS_IPU_FORCE can
be read from the ipu_policy node, which is different from the actual
situation. And remount to lfs mode should be disallowed when
f2fs ipu is enabled, let's fix it.
Fixes: 84b89e5d943d ("f2fs: add auto tuning for small devices")
Signed-off-by: Yangtao Li <frank.li@xxxxxxxx>
Reviewed-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index e77518c49f388..6eb5922a25361 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -670,6 +670,8 @@ static inline int utilization(struct f2fs_sb_info *sbi)
#define SMALL_VOLUME_SEGMENTS (16 * 512) /* 16GB */
+#define F2FS_IPU_DISABLE 0
+
enum {
F2FS_IPU_FORCE,
F2FS_IPU_SSR,
@@ -679,10 +681,16 @@ enum {
F2FS_IPU_ASYNC,
F2FS_IPU_NOCACHE,
F2FS_IPU_HONOR_OPU_WRITE,
+ F2FS_IPU_MAX,
};
+static inline bool IS_F2FS_IPU_DISABLE(struct f2fs_sb_info *sbi)
+{
+ return SM_I(sbi)->ipu_policy == F2FS_IPU_DISABLE;
+}
+
#define F2FS_IPU_POLICY(name) \
-static inline int IS_##name(struct f2fs_sb_info *sbi) \
+static inline bool IS_##name(struct f2fs_sb_info *sbi) \
{ \
return SM_I(sbi)->ipu_policy & BIT(name); \
}
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 87d56a9883e65..53878feb69d33 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1347,12 +1347,12 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
}
if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
- f2fs_err(sbi, "LFS not compatible with checkpoint=disable");
+ f2fs_err(sbi, "LFS is not compatible with checkpoint=disable");
return -EINVAL;
}
if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) {
- f2fs_err(sbi, "LFS not compatible with ATGC");
+ f2fs_err(sbi, "LFS is not compatible with ATGC");
return -EINVAL;
}
@@ -2306,6 +2306,12 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
}
}
#endif
+ if (f2fs_lfs_mode(sbi) && !IS_F2FS_IPU_DISABLE(sbi)) {
+ err = -EINVAL;
+ f2fs_warn(sbi, "LFS is not compatible with IPU");
+ goto restore_opts;
+ }
+
/* disallow enable atgc dynamically */
if (no_atgc == !!test_opt(sbi, ATGC)) {
err = -EINVAL;
@@ -4089,8 +4095,9 @@ static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
if (f2fs_block_unit_discard(sbi))
SM_I(sbi)->dcc_info->discard_granularity =
MIN_DISCARD_GRANULARITY;
- SM_I(sbi)->ipu_policy = BIT(F2FS_IPU_FORCE) |
- BIT(F2FS_IPU_HONOR_OPU_WRITE);
+ if (!f2fs_lfs_mode(sbi))
+ SM_I(sbi)->ipu_policy = BIT(F2FS_IPU_FORCE) |
+ BIT(F2FS_IPU_HONOR_OPU_WRITE);
}
sbi->readdir_ra = true;
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 83a366f3ee80e..088b816127ecb 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -686,6 +686,15 @@ static ssize_t __sbi_store(struct f2fs_attr *a,
return count;
}
+ if (!strcmp(a->attr.name, "ipu_policy")) {
+ if (t >= BIT(F2FS_IPU_MAX))
+ return -EINVAL;
+ if (t && f2fs_lfs_mode(sbi))
+ return -EINVAL;
+ SM_I(sbi)->ipu_policy = (unsigned int)t;
+ return count;
+ }
+
*ui = (unsigned int)t;
return count;
