| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Tue, 4 Oct 2022 09:41:02 +0800
From: Chao Yu <chao@...nel.org>
To: jaegeuk@...nel.org
Cc: linux-f2fs-devel@...ts.sourceforge.net,
linux-kernel@...r.kernel.org, Chao Yu <chao@...nel.org>
Subject: [PATCH] f2fs: change to use atomic_t type form sbi.atomic_files
inode_lock[ATOMIC_FILE] was used for protecting sbi->atomic_files,
update atomic_files variable's type to atomic_t instead of unsigned
int, then inode_lock[ATOMIC_FILE] can be obsoleted.
Signed-off-by: Chao Yu <chao@...nel.org>
---
fs/f2fs/debug.c | 3 ++-
fs/f2fs/f2fs.h | 11 ++++++++---
fs/f2fs/file.c | 4 +---
fs/f2fs/segment.c | 5 +----
4 files changed, 12 insertions(+), 11 deletions(-)
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 7a9dd2319155..a216dcdf6941 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -91,7 +91,7 @@ static void update_general_status(struct f2fs_sb_info *sbi)
si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
si->nquota_files = sbi->nquota_files;
si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
- si->aw_cnt = sbi->atomic_files;
+ si->aw_cnt = atomic_read(&sbi->atomic_files);
si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
@@ -611,6 +611,7 @@ int f2fs_build_stats(struct f2fs_sb_info *sbi)
atomic_set(&sbi->compr_inode, 0);
atomic64_set(&sbi->compr_blocks, 0);
atomic_set(&sbi->swapfile_inode, 0);
+ atomic_set(&sbi->atomic_files, 0);
atomic_set(&sbi->inplace_count, 0);
for (i = META_CP; i < META_MAX; i++)
atomic_set(&sbi->meta_count[i], 0);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index a0b2c8626a75..fba7cd5cc201 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1259,7 +1259,6 @@ enum inode_type {
DIR_INODE, /* for dirty dir inode */
FILE_INODE, /* for dirty regular/symlink inode */
DIRTY_META, /* for all dirtied inode metadata */
- ATOMIC_FILE, /* for all atomic files */
NR_INODE_TYPE,
};
@@ -1741,7 +1740,6 @@ struct f2fs_sb_info {
unsigned int gc_urgent_high_remaining; /* remaining trial count for GC_URGENT_HIGH */
/* for skip statistic */
- unsigned int atomic_files; /* # of opened atomic file */
unsigned long long skipped_gc_rwsem; /* FG_GC only */
/* threshold for gc trials on pinned files */
@@ -1773,6 +1771,7 @@ struct f2fs_sb_info {
atomic_t compr_inode; /* # of compressed inodes */
atomic64_t compr_blocks; /* # of compressed blocks */
atomic_t swapfile_inode; /* # of swapfile inodes */
+ atomic_t atomic_files; /* # of opened atomic file */
atomic_t max_aw_cnt; /* max # of atomic writes */
unsigned int io_skip_bggc; /* skip background gc for in-flight IO */
unsigned int other_skip_bggc; /* skip background gc for other reasons */
@@ -3972,6 +3971,10 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
(atomic_inc(&F2FS_I_SB(inode)->swapfile_inode))
#define stat_dec_swapfile_inode(inode) \
(atomic_dec(&F2FS_I_SB(inode)->swapfile_inode))
+#define stat_inc_atomic_inode(inode) \
+ (atomic_inc(&F2FS_I_SB(inode)->atomic_files))
+#define stat_dec_atomic_inode(inode) \
+ (atomic_dec(&F2FS_I_SB(inode)->atomic_files))
#define stat_inc_meta_count(sbi, blkaddr) \
do { \
if (blkaddr < SIT_I(sbi)->sit_base_addr) \
@@ -3991,7 +3994,7 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
(atomic_inc(&(sbi)->inplace_count))
#define stat_update_max_atomic_write(inode) \
do { \
- int cur = F2FS_I_SB(inode)->atomic_files; \
+ int cur = atomic_read(&F2FS_I_SB(inode)->atomic_files); \
int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt); \
if (cur > max) \
atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \
@@ -4058,6 +4061,8 @@ void f2fs_update_sit_info(struct f2fs_sb_info *sbi);
#define stat_sub_compr_blocks(inode, blocks) do { } while (0)
#define stat_inc_swapfile_inode(inode) do { } while (0)
#define stat_dec_swapfile_inode(inode) do { } while (0)
+#define stat_inc_atomic_inode(inode) do { } while (0)
+#define stat_dec_atomic_inode(inode) do { } while (0)
#define stat_update_max_atomic_write(inode) do { } while (0)
#define stat_inc_meta_count(sbi, blkaddr) do { } while (0)
#define stat_inc_seg_type(sbi, curseg) do { } while (0)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index df5e7ad80096..e4b6e51086a3 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2061,9 +2061,7 @@ static int f2fs_ioc_start_atomic_write(struct file *filp, bool truncate)
}
f2fs_i_size_write(fi->cow_inode, isize);
- spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
- sbi->atomic_files++;
- spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
+ stat_inc_atomic_inode(inode);
set_inode_flag(inode, FI_ATOMIC_FILE);
set_inode_flag(fi->cow_inode, FI_COW_FILE);
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 5619f2916335..79ec215a7ec6 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -187,7 +187,6 @@ bool f2fs_need_SSR(struct f2fs_sb_info *sbi)
void f2fs_abort_atomic_write(struct inode *inode, bool clean)
{
- struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
struct f2fs_inode_info *fi = F2FS_I(inode);
if (!f2fs_is_atomic_file(inode))
@@ -203,9 +202,7 @@ void f2fs_abort_atomic_write(struct inode *inode, bool clean)
release_atomic_write_cnt(inode);
clear_inode_flag(inode, FI_ATOMIC_FILE);
- spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
- sbi->atomic_files--;
- spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
+ stat_dec_atomic_inode(inode);
}
static int __replace_atomic_write_block(struct inode *inode, pgoff_t index,
--
2.25.1
Powered by blists - more mailing lists