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authorChandra Seetharaman <sekharan@us.ibm.com>2013-07-20 02:32:55 +0400
committerBen Myers <bpm@sgi.com>2013-07-22 23:10:53 +0400
commit0102629776a2f5c3bd9c5dc0ef77956c60255074 (patch)
treec976f6d51f00c53047eb81d39d69b446b30d069c /fs/xfs/xfs_mount.c
parent297aa63769e6ae06b7db97eb76c9211beeb32c69 (diff)
downloadlinux-0102629776a2f5c3bd9c5dc0ef77956c60255074.tar.xz
xfs: Initialize all quota inodes to be NULLFSINO
mkfs doesn't initialize the quota inodes to NULLFSINO as it does for the other internal inodes. This leads to two in-core values (0 and NULLFSINO) to be checked against, to make sure if a quota inode is valid. Solve that problem by initializing the in-core values of all quotaino values to NULLFSINO if they are 0 in the disk. Note that these values are not written back to on-disk superblock unless some quota is enabled on the filesystem. Even in that case sb_pquotino is written to disk only if the on-disk superblock supports pquotino Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_mount.c')
-rw-r--r--fs/xfs/xfs_mount.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 2b0ba3581656..7263e1bb59f7 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -572,6 +572,24 @@ out_unwind:
static void
xfs_sb_quota_from_disk(struct xfs_sb *sbp)
{
+ /*
+ * older mkfs doesn't initialize quota inodes to NULLFSINO. This
+ * leads to in-core values having two different values for a quota
+ * inode to be invalid: 0 and NULLFSINO. Change it to a single value
+ * NULLFSINO.
+ *
+ * Note that this change affect only the in-core values. These
+ * values are not written back to disk unless any quota information
+ * is written to the disk. Even in that case, sb_pquotino field is
+ * not written to disk unless the superblock supports pquotino.
+ */
+ if (sbp->sb_uquotino == 0)
+ sbp->sb_uquotino = NULLFSINO;
+ if (sbp->sb_gquotino == 0)
+ sbp->sb_gquotino = NULLFSINO;
+ if (sbp->sb_pquotino == 0)
+ sbp->sb_pquotino = NULLFSINO;
+
if (sbp->sb_qflags & XFS_OQUOTA_ENFD)
sbp->sb_qflags |= (sbp->sb_qflags & XFS_PQUOTA_ACCT) ?
XFS_PQUOTA_ENFD : XFS_GQUOTA_ENFD;