diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2009-11-02 18:50:49 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-14 08:07:15 -0800 |
| commit | ba593a59c912b3ae1f18b74d8ad66594ba3a47b6 (patch) | |
| tree | 1cad53b79804666f5d18d97679e7fedacd740b32 | |
| parent | 620c66ab00f5b06de7119fbe0cc7dba3cc9aca7d (diff) | |
ext4: discard preallocation when restarting a transaction during truncate
(cherry picked from commit fa5d11133b07053270e18fa9c18560e66e79217e)
When restart a transaction during a truncate operation, we drop and
reacquire i_data_sem. After reacquiring i_data_sem, we need to
discard any inode-based preallocation that might have been grabbed
while we released i_data_sem (for example, if pdflush is allocating
blocks and racing against the truncate).
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | fs/ext4/inode.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 6c8411bb0513..02e51961e71a 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -193,7 +193,7 @@ static int try_to_extend_transaction(handle_t *handle, struct inode *inode) * so before we call here everything must be consistently dirtied against * this transaction. */ - int ext4_truncate_restart_trans(handle_t *handle, struct inode *inode, +int ext4_truncate_restart_trans(handle_t *handle, struct inode *inode, int nblocks) { int ret; @@ -209,6 +209,7 @@ static int try_to_extend_transaction(handle_t *handle, struct inode *inode) up_write(&EXT4_I(inode)->i_data_sem); ret = ext4_journal_restart(handle, blocks_for_truncate(inode)); down_write(&EXT4_I(inode)->i_data_sem); + ext4_discard_preallocations(inode); return ret; } |