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| author |   Chao Yu <yuchao0@huawei.com> | 2020-01-14 19:36:50 +0800 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2020-01-17 16:48:44 -0800 |
| commit | fb24fea75ca5ceef59f753494b2efd453606e08a (patch) | |
| tree | cfd402783f78a9122d6b70551a1e786304463de9 /fs/f2fs/segment.c | |
| parent | f2fs: update f2fs document regarding to fsync_mode (diff) | |
| download | linux-dev-fb24fea75ca5ceef59f753494b2efd453606e08a.tar.xz linux-dev-fb24fea75ca5ceef59f753494b2efd453606e08a.zip | |
f2fs: change to use rwsem for gc_mutex
Mutex lock won't serialize callers, in order to avoid starving of unlucky
caller, let's use rwsem lock instead.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.c')
| -rw-r--r-- | fs/f2fs/segment.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 1d3bb2605b03..cf0eb002cfd4 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -504,7 +504,7 @@ void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need) * dir/node pages without enough free segments. */ if (has_not_enough_free_secs(sbi, 0, 0)) { - mutex_lock(&sbi->gc_mutex); + down_write(&sbi->gc_lock); f2fs_gc(sbi, false, false, NULL_SEGNO); } } @@ -2860,9 +2860,9 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) if (sbi->discard_blks == 0) goto out; - mutex_lock(&sbi->gc_mutex); + down_write(&sbi->gc_lock); err = f2fs_write_checkpoint(sbi, &cpc); - mutex_unlock(&sbi->gc_mutex); + up_write(&sbi->gc_lock); if (err) goto out; |