From 0102629776a2f5c3bd9c5dc0ef77956c60255074 Mon Sep 17 00:00:00 2001 From: Chandra Seetharaman Date: Fri, 19 Jul 2013 17:32:55 -0500 Subject: [PATCH] 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 Reviewed-by: Ben Myers Signed-off-by: Ben Myers --- fs/xfs/xfs_mount.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) 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; -- 2.30.2