diff options
| author | Sahitya Tummala <stummala@codeaurora.org> | 2020-11-23 10:58:32 +0530 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2020-12-02 22:00:21 -0800 |
| commit | 8769918bf06c9cfb01a1a6ee0e547c9916881496 (patch) | |
| tree | 5ac4d1494b84a00c6736f28b0fad369d10432ff8 /fs/f2fs/gc.c | |
| parent | 7ad08a58bf67594057362e45cbddd3e27e53e557 (diff) | |
| download | linux-stable-8769918bf06c9cfb01a1a6ee0e547c9916881496.tar.gz linux-stable-8769918bf06c9cfb01a1a6ee0e547c9916881496.tar.bz2 linux-stable-8769918bf06c9cfb01a1a6ee0e547c9916881496.zip | |
f2fs: change to use rwsem for cp_mutex
Use rwsem to ensure serialization of the callers and to avoid
starvation of high priority tasks, when the system is under
heavy IO workload.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/gc.c')
| -rw-r--r-- | fs/f2fs/gc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 05641a1e36cc..3ef84e6ded41 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -1986,7 +1986,7 @@ int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count) freeze_super(sbi->sb); down_write(&sbi->gc_lock); - mutex_lock(&sbi->cp_mutex); + down_write(&sbi->cp_global_sem); spin_lock(&sbi->stat_lock); if (shrunk_blocks + valid_user_blocks(sbi) + @@ -2031,7 +2031,7 @@ recover_out: spin_unlock(&sbi->stat_lock); } out_err: - mutex_unlock(&sbi->cp_mutex); + up_write(&sbi->cp_global_sem); up_write(&sbi->gc_lock); thaw_super(sbi->sb); clear_sbi_flag(sbi, SBI_IS_RESIZEFS); |