3.2-stable review patch. If anyone has any objections, please let me know.
------------------ From: Jan Kara <j...@suse.cz> commit b9e06ef2e8706fe669b51f4364e3aeed58639eb2 upstream. In reiserfs_quota_on() we do quite some work - for example unpacking tail of a quota file. Thus we have to hold write lock until a moment we call back into the quota code. Signed-off-by: Jan Kara <j...@suse.cz> [bwh: Backported to 3.2: there is no distinction between USRQUOTA and GRPQUOTA mount options here] Signed-off-by: Ben Hutchings <b...@decadent.org.uk> --- fs/reiserfs/super.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -2073,8 +2073,11 @@ static int reiserfs_quota_on(struct supe struct inode *inode; struct reiserfs_transaction_handle th; - if (!(REISERFS_SB(sb)->s_mount_opt & (1 << REISERFS_QUOTA))) - return -EINVAL; + reiserfs_write_lock(sb); + if (!(REISERFS_SB(sb)->s_mount_opt & (1 << REISERFS_QUOTA))) { + err = -EINVAL; + goto out; + } /* Quotafile not on the same filesystem? */ if (path->mnt->mnt_sb != sb) { @@ -2116,8 +2119,10 @@ static int reiserfs_quota_on(struct supe if (err) goto out; } - err = dquot_quota_on(sb, type, format_id, path); + reiserfs_write_unlock(sb); + return dquot_quota_on(sb, type, format_id, path); out: + reiserfs_write_unlock(sb); return err; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/