After commit 3db1de0e582c ("f2fs: change the current atomic write way"),
we removed all GC_FAILURE_ATOMIC usage, let's change i_gc_failures[]
array to i_pin_failure for cleanup.
Meanwhile, let's define i_current_depth and i_gc_failures as union
variable due to they won't be valid at the same time.
Signed-off-by: Chao Yu <[email protected]>
---
fs/f2fs/f2fs.h | 14 +++++---------
fs/f2fs/file.c | 12 +++++-------
fs/f2fs/inode.c | 6 ++----
fs/f2fs/recovery.c | 3 +--
4 files changed, 13 insertions(+), 22 deletions(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index b03d75e4eedc..400ff8e1abe0 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -765,11 +765,6 @@ enum {
#define DEF_DIR_LEVEL 0
-enum {
- GC_FAILURE_PIN,
- MAX_GC_FAILURE
-};
-
/* used for f2fs_inode_info->flags */
enum {
FI_NEW_INODE, /* indicate newly allocated inode */
@@ -816,9 +811,10 @@ struct f2fs_inode_info {
unsigned long i_flags; /* keep an inode flags for ioctl */
unsigned char i_advise; /* use to give file attribute hints */
unsigned char i_dir_level; /* use for dentry level for large dir */
- unsigned int i_current_depth; /* only for directory depth */
- /* for gc failure statistic */
- unsigned int i_gc_failures[MAX_GC_FAILURE];
+ union {
+ unsigned int i_current_depth; /* only for directory depth */
+ unsigned int i_gc_failures; /* for gc failure statistic */
+ };
unsigned int i_pino; /* parent inode number */
umode_t i_acl_mode; /* keep file acl mode temporarily */
@@ -3133,7 +3129,7 @@ static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
static inline void f2fs_i_gc_failures_write(struct inode *inode,
unsigned int count)
{
- F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = count;
+ F2FS_I(inode)->i_gc_failures = count;
f2fs_mark_inode_dirty_sync(inode, true);
}
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index ac9d6380e433..200cafc75dce 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -3196,13 +3196,11 @@ int f2fs_pin_file_control(struct inode *inode, bool inc)
/* Use i_gc_failures for normal file as a risk signal. */
if (inc)
- f2fs_i_gc_failures_write(inode,
- fi->i_gc_failures[GC_FAILURE_PIN] + 1);
+ f2fs_i_gc_failures_write(inode, fi->i_gc_failures + 1);
- if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
+ if (fi->i_gc_failures > sbi->gc_pin_file_threshold) {
f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
- __func__, inode->i_ino,
- fi->i_gc_failures[GC_FAILURE_PIN]);
+ __func__, inode->i_ino, fi->i_gc_failures);
clear_inode_flag(inode, FI_PIN_FILE);
return -EAGAIN;
}
@@ -3266,7 +3264,7 @@ static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
}
set_inode_flag(inode, FI_PIN_FILE);
- ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
+ ret = F2FS_I(inode)->i_gc_failures;
done:
f2fs_update_time(sbi, REQ_TIME);
out:
@@ -3281,7 +3279,7 @@ static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
__u32 pin = 0;
if (is_inode_flag_set(inode, FI_PIN_FILE))
- pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
+ pin = F2FS_I(inode)->i_gc_failures;
return put_user(pin, (u32 __user *)arg);
}
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 1423cd27a477..9a8c2b63f56d 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -408,8 +408,7 @@ static int do_read_inode(struct inode *inode)
if (S_ISDIR(inode->i_mode))
fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
else if (S_ISREG(inode->i_mode))
- fi->i_gc_failures[GC_FAILURE_PIN] =
- le16_to_cpu(ri->i_gc_failures);
+ fi->i_gc_failures = le16_to_cpu(ri->i_gc_failures);
fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
fi->i_flags = le32_to_cpu(ri->i_flags);
if (S_ISREG(inode->i_mode))
@@ -679,8 +678,7 @@ void f2fs_update_inode(struct inode *inode, struct page *node_page)
ri->i_current_depth =
cpu_to_le32(F2FS_I(inode)->i_current_depth);
else if (S_ISREG(inode->i_mode))
- ri->i_gc_failures =
- cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
+ ri->i_gc_failures = cpu_to_le16(F2FS_I(inode)->i_gc_failures);
ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index e7bf15b8240a..496aee53c38a 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -330,8 +330,7 @@ static int recover_inode(struct inode *inode, struct page *page)
F2FS_I(inode)->i_advise = raw->i_advise;
F2FS_I(inode)->i_flags = le32_to_cpu(raw->i_flags);
f2fs_set_inode_flags(inode);
- F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] =
- le16_to_cpu(raw->i_gc_failures);
+ F2FS_I(inode)->i_gc_failures = le16_to_cpu(raw->i_gc_failures);
recover_inline_flags(inode, raw);
--
2.40.1
type of f2fs_inode.i_gc_failures, f2fs_inode_info.i_gc_failures, and
f2fs_sb_info.gc_pin_file_threshold is __le16, unsigned int, and u64,
so it will cause truncation during comparison and persistence.
Unifying variable of these three variables to unsigned short, and
add an upper boundary limitation for gc_pin_file_threshold.
Signed-off-by: Chao Yu <[email protected]>
---
Documentation/ABI/testing/sysfs-fs-f2fs | 2 +-
fs/f2fs/f2fs.h | 4 ++--
fs/f2fs/file.c | 11 ++++++-----
fs/f2fs/gc.h | 1 +
fs/f2fs/sysfs.c | 7 +++++++
5 files changed, 17 insertions(+), 8 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
index 1a4d83953379..cad6c3dc1f9c 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -331,7 +331,7 @@ Date: January 2018
Contact: Jaegeuk Kim <[email protected]>
Description: This indicates how many GC can be failed for the pinned
file. If it exceeds this, F2FS doesn't guarantee its pinning
- state. 2048 trials is set by default.
+ state. 2048 trials is set by default, and 65535 as maximum.
What: /sys/fs/f2fs/<disk>/extension_list
Date: February 2018
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 400ff8e1abe0..3dff45cd6cde 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -813,7 +813,7 @@ struct f2fs_inode_info {
unsigned char i_dir_level; /* use for dentry level for large dir */
union {
unsigned int i_current_depth; /* only for directory depth */
- unsigned int i_gc_failures; /* for gc failure statistic */
+ unsigned short i_gc_failures; /* for gc failure statistic */
};
unsigned int i_pino; /* parent inode number */
umode_t i_acl_mode; /* keep file acl mode temporarily */
@@ -1672,7 +1672,7 @@ struct f2fs_sb_info {
unsigned long long skipped_gc_rwsem; /* FG_GC only */
/* threshold for gc trials on pinned files */
- u64 gc_pin_file_threshold;
+ unsigned short gc_pin_file_threshold;
struct f2fs_rwsem pin_sem;
/* maximum # of trials to find a victim segment for SSR and GC */
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 200cafc75dce..1b1b08923f7d 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -3194,16 +3194,17 @@ int f2fs_pin_file_control(struct inode *inode, bool inc)
struct f2fs_inode_info *fi = F2FS_I(inode);
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
- /* Use i_gc_failures for normal file as a risk signal. */
- if (inc)
- f2fs_i_gc_failures_write(inode, fi->i_gc_failures + 1);
-
- if (fi->i_gc_failures > sbi->gc_pin_file_threshold) {
+ if (fi->i_gc_failures >= sbi->gc_pin_file_threshold) {
f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
__func__, inode->i_ino, fi->i_gc_failures);
clear_inode_flag(inode, FI_PIN_FILE);
return -EAGAIN;
}
+
+ /* Use i_gc_failures for normal file as a risk signal. */
+ if (inc)
+ f2fs_i_gc_failures_write(inode, fi->i_gc_failures + 1);
+
return 0;
}
diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h
index 9c0d06c4d19a..a8ea3301b815 100644
--- a/fs/f2fs/gc.h
+++ b/fs/f2fs/gc.h
@@ -26,6 +26,7 @@
#define LIMIT_FREE_BLOCK 40 /* percentage over invalid + free space */
#define DEF_GC_FAILED_PINNED_FILES 2048
+#define MAX_GC_FAILED_PINNED_FILES USHRT_MAX
/* Search max. number of dirty segments to select a victim segment */
#define DEF_MAX_VICTIM_SEARCH 4096 /* covers 8GB */
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 7aa3844e7a80..09d3ecfaa4f1 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -681,6 +681,13 @@ static ssize_t __sbi_store(struct f2fs_attr *a,
return count;
}
+ if (!strcmp(a->attr.name, "gc_pin_file_threshold")) {
+ if (t > MAX_GC_FAILED_PINNED_FILES)
+ return -EINVAL;
+ sbi->gc_pin_file_threshold = t;
+ return count;
+ }
+
if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
if (t != 0)
return -EINVAL;
--
2.40.1
Hello:
This series was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <[email protected]>:
On Mon, 6 May 2024 18:45:37 +0800 you wrote:
> After commit 3db1de0e582c ("f2fs: change the current atomic write way"),
> we removed all GC_FAILURE_ATOMIC usage, let's change i_gc_failures[]
> array to i_pin_failure for cleanup.
>
> Meanwhile, let's define i_current_depth and i_gc_failures as union
> variable due to they won't be valid at the same time.
>
> [...]
Here is the summary with links:
- [f2fs-dev,1/2] f2fs: remove unused GC_FAILURE_PIN
https://git.kernel.org/jaegeuk/f2fs/c/968c4f72b23c
- [f2fs-dev,2/2] f2fs: fix to limit gc_pin_file_threshold
https://git.kernel.org/jaegeuk/f2fs/c/c521a6ab4ad7
You are awesome, thank you!
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