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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/f2fs.h | |
| parent | f2fs: update f2fs document regarding to fsync_mode (diff) | |
| download | linux-fb24fea75ca5ceef59f753494b2efd453606e08a.tar.gz linux-fb24fea75ca5ceef59f753494b2efd453606e08a.tar.bz2 linux-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/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index e7208442d32a..61d62cd06449 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1391,7 +1391,10 @@ struct f2fs_sb_info { struct f2fs_mount_info mount_opt; /* mount options */ /* for cleaning operations */ - struct mutex gc_mutex; /* mutex for GC */ + struct rw_semaphore gc_lock; /* + * semaphore for GC, avoid + * race between GC and GC or CP + */ struct f2fs_gc_kthread *gc_thread; /* GC thread */ unsigned int cur_victim_sec; /* current victim section num */ unsigned int gc_mode; /* current GC state */ |