ext4: fix oops in ext4_quota_off()
If quota is not enabled when ext4_quota_off() is called, we must not
dereference quota file inode since it is NULL. Check properly for
this.
This fixes a bug in commit 21f976975c
(ext4: remove unnecessary
[cm]time update of quota file), which was merged for 2.6.39-rc3.
Reported-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
parent
6976a6f2ac
commit
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@ -4681,6 +4681,9 @@ static int ext4_quota_off(struct super_block *sb, int type)
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if (test_opt(sb, DELALLOC))
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sync_filesystem(sb);
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if (!inode)
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goto out;
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/* Update modification times of quota files when userspace can
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* start looking at them */
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handle = ext4_journal_start(inode, 1);
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