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| author | Jan Kara <jack@suse.cz> | 2008-04-29 22:02:07 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2008-04-29 22:02:07 -0400 |
| commit | 2887df139c40512cdc147d1a84d95d4f3d261bd1 (patch) | |
| tree | e42a0ad7c0532f373dc4b09928cd8396bcf4e6dc | |
| parent | 53b7e9f6807c1274eee19201396b4c2b5f721553 (diff) | |
| download | linux-2887df139c40512cdc147d1a84d95d4f3d261bd1.tar.gz | |
ext4: Fix hang on umount with quotas when journal is aborted
Call dquot_drop() from ext4_dquot_drop() even if we fail to start a transaction. Otherwise we never get to dropping references to quota structures from the inode and umount will hang indefinitely. Thanks to Payphone LIOU for spotting the problem. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mingming Cao <cmm@us.ibm.com> CC: Payphone LIOU <lioupayphone@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| -rw-r--r-- | fs/ext4/super.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 93a7e746f425..e3b3483b600d 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3040,8 +3040,14 @@ static int ext4_dquot_drop(struct inode *inode) /* We may delete quota structure so we need to reserve enough blocks */ handle = ext4_journal_start(inode, 2*EXT4_QUOTA_DEL_BLOCKS(inode->i_sb)); - if (IS_ERR(handle)) + if (IS_ERR(handle)) { + /* + * We call dquot_drop() anyway to at least release references + * to quota structures so that umount does not hang. + */ + dquot_drop(inode); return PTR_ERR(handle); + } ret = dquot_drop(inode); err = ext4_journal_stop(handle); if (!ret) |