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| author | Frank Mayhar <fmayhar@google.com> | 2010-05-17 08:00:00 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2010-05-17 08:00:00 -0400 |
| commit | 14ece1028b3ed53ffec1b1213ffc6acaf79ad77c (patch) | |
| tree | 8f5a13487139c68ef775c9d39b7be83386fdae06 /fs/ext4/namei.c | |
| parent | 60e6679e28518ccd67169c4a539d8cc7490eb8a6 (diff) | |
| download | lwn-14ece1028b3ed53ffec1b1213ffc6acaf79ad77c.tar.gz lwn-14ece1028b3ed53ffec1b1213ffc6acaf79ad77c.zip | |
ext4: Make fsync sync new parent directories in no-journal mode
Add a new ext4 state to tell us when a file has been newly created; use
that state in ext4_sync_file in no-journal mode to tell us when we need
to sync the parent directory as well as the inode and data itself. This
fixes a problem in which a panic or power failure may lose the entire
file even when using fsync, since the parent directory entry is lost.
Addresses-Google-Bug: #2480057
Signed-off-by: Frank Mayhar <fmayhar@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/namei.c')
| -rw-r--r-- | fs/ext4/namei.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 83be743c8d1f..a43e6617b351 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1517,6 +1517,8 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry, de->rec_len = ext4_rec_len_to_disk(blocksize, blocksize); retval = add_dirent_to_buf(handle, dentry, inode, de, bh); brelse(bh); + if (retval == 0) + ext4_set_inode_state(inode, EXT4_STATE_NEWENTRY); return retval; } |