diff options
| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-04-12 14:36:11 -0700 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-13 12:33:20 +0200 |
| commit | e078f89999e9463f10f6469aedbdffa5bce13e5f (patch) | |
| tree | c3ed17668a50a44e4c384c61fb7dc01ab34b1e69 | |
| parent | c60629b6e8874251bc33c1b47788dc622e40d17a (diff) | |
f2fs: flush dirty pages before starting atomic writes
If somebody wrote some data before atomic writes, we should flush them in order
to handle atomic data in a right period.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | fs/f2fs/file.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 3f7016007..13d5a428a 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1397,7 +1397,16 @@ static int f2fs_ioc_start_atomic_write(struct file *filp) set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); - return 0; + if (!get_dirty_pages(inode)) + return 0; + + f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, + "Unexpected flush for atomic writes: ino=%lu, npages=%u", + inode->i_ino, get_dirty_pages(inode)); + ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); + if (ret) + clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); + return ret; } static int f2fs_ioc_commit_atomic_write(struct file *filp) |