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| author | Theodore Ts'o <tytso@mit.edu> | 2009-02-24 08:21:14 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2009-02-24 08:21:14 -0500 |
| commit | 7d8f9f7d150dded7b68e61ca6403a1f166fb4edf (patch) | |
| tree | 79572041ae1b5737bc8d75037ff86903469430eb /fs/ext4/file.c | |
| parent | ccd2506bd43113659aa904d5bea5d1300605e2a6 (diff) | |
| download | linux-3.10-7d8f9f7d150dded7b68e61ca6403a1f166fb4edf.tar.gz linux-3.10-7d8f9f7d150dded7b68e61ca6403a1f166fb4edf.tar.bz2 linux-3.10-7d8f9f7d150dded7b68e61ca6403a1f166fb4edf.zip | |
ext4: Automatically allocate delay allocated blocks on close
When closing a file that had been previously truncated, force any
delay allocated blocks that to be allocated so that if the filesystem
is mounted with data=ordered, the data blocks will be pushed out to
disk along with the journal commit. Many application programs expect
this, so we do this to avoid zero length files if the system crashes
unexpectedly.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/file.c')
| -rw-r--r-- | fs/ext4/file.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/ext4/file.c b/fs/ext4/file.c index f731cb545a0..06df8272c63 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -33,6 +33,10 @@ */ static int ext4_release_file(struct inode *inode, struct file *filp) { + if (EXT4_I(inode)->i_state & EXT4_STATE_DA_ALLOC_CLOSE) { + ext4_alloc_da_blocks(inode); + EXT4_I(inode)->i_state &= ~EXT4_STATE_DA_ALLOC_CLOSE; + } /* if we are the last writer on the inode, drop the block reservation */ if ((filp->f_mode & FMODE_WRITE) && (atomic_read(&inode->i_writecount) == 1)) |