diff options
| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-07-06 14:46:01 -0700 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2017-07-21 12:38:16 +0200 |
| commit | 53a60ebd6f7253aabdbad7a08360437b80fc03ad (patch) | |
| tree | 72ced6ccfc34552c9c6a47aff4c007dfb43055b2 /fs/f2fs | |
| parent | 279f42412973312b80c9ef35a91747c7f402c60c (diff) | |
f2fs: relax migratepage for atomic written page
In order to avoid lock contention for atomic written pages, we'd better give
EBUSY in f2fs_migrate_page when mode is asynchronous. We expect it will be
released soon as transaction commits.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/data.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 3e4aa92e9..10eb16e4d 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -2220,8 +2220,12 @@ int f2fs_migrate_page(struct address_space *mapping, BUG_ON(PageWriteback(page)); /* migrating an atomic written page is safe with the inmem_lock hold */ - if (atomic_written && !mutex_trylock(&fi->inmem_lock)) - return -EAGAIN; + if (atomic_written) { + if (mode != MIGRATE_SYNC) + return -EBUSY; + if (!mutex_trylock(&fi->inmem_lock)) + return -EAGAIN; + } /* * A reference is expected if PagePrivate set when move mapping, |