summaryrefslogtreecommitdiff
path: root/fs/f2fs
diff options
context:
space:
mode:
authorJaegeuk Kim <jaegeuk@kernel.org>2016-04-12 14:36:11 -0700
committerJaegeuk Kim <jaegeuk@kernel.org>2016-04-15 08:50:25 -0700
commitc27753d675fccd3b15a78621a2a66616507693d4 (patch)
tree2205e04b3163f3caab4abfb486a66f56dce6c320 /fs/f2fs
parent63c52d7878903a014fa4c9075afd051b1e77597b (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>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/file.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index ed389f6a37b4..7de90e60abd1 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1369,7 +1369,16 @@ 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)