6.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Darrick J. Wong" <djwong@xxxxxxxxxx>
[ Upstream commit 49813a21ed57895b73ec4ed3b99d4beec931496f ]
Teach quotacheck to reload the unlinked inode lists when walking the
inode table. This requires extra state handling, since it's possible
that a reloaded inode will get inactivated before quotacheck tries to
scan it; in this case, we need to ensure that the reloaded inode does
not have dquots attached when it is freed.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Signed-off-by: Leah Rumancik <leah.rumancik@xxxxxxxxx>
Acked-by: Chandan Babu R <chandanbabu@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/xfs/xfs_attr_inactive.c | 1 -
fs/xfs/xfs_inode.c | 12 +++++++++---
fs/xfs/xfs_inode.h | 5 ++++-
fs/xfs/xfs_mount.h | 10 +++++++++-
fs/xfs/xfs_qm.c | 7 +++++++
5 files changed, 29 insertions(+), 6 deletions(-)
--- a/fs/xfs/xfs_attr_inactive.c
+++ b/fs/xfs/xfs_attr_inactive.c
@@ -333,7 +333,6 @@ xfs_attr_inactive(
int error = 0;
mp = dp->i_mount;
- ASSERT(! XFS_NOT_DQATTACHED(mp, dp));
xfs_ilock(dp, lock_mode);
if (!xfs_inode_has_attr_fork(dp))
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1743,9 +1743,13 @@ xfs_inactive(
ip->i_df.if_nextents > 0 || ip->i_delayed_blks > 0))
truncate = 1;
- error = xfs_qm_dqattach(ip);
- if (error)
- goto out;
+ if (xfs_iflags_test(ip, XFS_IQUOTAUNCHECKED)) {
+ xfs_qm_dqdetach(ip);
+ } else {
+ error = xfs_qm_dqattach(ip);
+ if (error)
+ goto out;
+ }
if (S_ISLNK(VFS_I(ip)->i_mode))
error = xfs_inactive_symlink(ip);
@@ -1963,6 +1967,8 @@ xfs_iunlink_reload_next(
trace_xfs_iunlink_reload_next(next_ip);
rele:
ASSERT(!(VFS_I(next_ip)->i_state & I_DONTCACHE));
+ if (xfs_is_quotacheck_running(mp) && next_ip)
+ xfs_iflags_set(next_ip, XFS_IQUOTAUNCHECKED);
xfs_irele(next_ip);
return error;
}
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -344,6 +344,9 @@ static inline bool xfs_inode_has_large_e
*/
#define XFS_INACTIVATING (1 << 13)
+/* Quotacheck is running but inode has not been added to quota counts. */
+#define XFS_IQUOTAUNCHECKED (1 << 14)
+
/* All inode state flags related to inode reclaim. */
#define XFS_ALL_IRECLAIM_FLAGS (XFS_IRECLAIMABLE | \
XFS_IRECLAIM | \
@@ -358,7 +361,7 @@ static inline bool xfs_inode_has_large_e
#define XFS_IRECLAIM_RESET_FLAGS \
(XFS_IRECLAIMABLE | XFS_IRECLAIM | \
XFS_IDIRTY_RELEASE | XFS_ITRUNCATED | XFS_NEED_INACTIVE | \
- XFS_INACTIVATING)
+ XFS_INACTIVATING | XFS_IQUOTAUNCHECKED)
/*
* Flags for inode locking.
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -401,6 +401,8 @@ __XFS_HAS_FEAT(nouuid, NOUUID)
#define XFS_OPSTATE_WARNED_SHRINK 8
/* Kernel has logged a warning about logged xattr updates being used. */
#define XFS_OPSTATE_WARNED_LARP 9
+/* Mount time quotacheck is running */
+#define XFS_OPSTATE_QUOTACHECK_RUNNING 10
#define __XFS_IS_OPSTATE(name, NAME) \
static inline bool xfs_is_ ## name (struct xfs_mount *mp) \
@@ -423,6 +425,11 @@ __XFS_IS_OPSTATE(inode32, INODE32)
__XFS_IS_OPSTATE(readonly, READONLY)
__XFS_IS_OPSTATE(inodegc_enabled, INODEGC_ENABLED)
__XFS_IS_OPSTATE(blockgc_enabled, BLOCKGC_ENABLED)
+#ifdef CONFIG_XFS_QUOTA
+__XFS_IS_OPSTATE(quotacheck_running, QUOTACHECK_RUNNING)
+#else
+# define xfs_is_quotacheck_running(mp) (false)
+#endif
static inline bool
xfs_should_warn(struct xfs_mount *mp, long nr)
@@ -440,7 +447,8 @@ xfs_should_warn(struct xfs_mount *mp, lo
{ (1UL << XFS_OPSTATE_BLOCKGC_ENABLED), "blockgc" }, \
{ (1UL << XFS_OPSTATE_WARNED_SCRUB), "wscrub" }, \
{ (1UL << XFS_OPSTATE_WARNED_SHRINK), "wshrink" }, \
- { (1UL << XFS_OPSTATE_WARNED_LARP), "wlarp" }
+ { (1UL << XFS_OPSTATE_WARNED_LARP), "wlarp" }, \
+ { (1UL << XFS_OPSTATE_QUOTACHECK_RUNNING), "quotacheck" }
/*
* Max and min values for mount-option defined I/O
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -1160,6 +1160,10 @@ xfs_qm_dqusage_adjust(
if (error)
return error;
+ error = xfs_inode_reload_unlinked(ip);
+ if (error)
+ goto error0;
+
ASSERT(ip->i_delayed_blks == 0);
if (XFS_IS_REALTIME_INODE(ip)) {
@@ -1173,6 +1177,7 @@ xfs_qm_dqusage_adjust(
}
nblks = (xfs_qcnt_t)ip->i_nblocks - rtblks;
+ xfs_iflags_clear(ip, XFS_IQUOTAUNCHECKED);
/*
* Add the (disk blocks and inode) resources occupied by this
@@ -1319,8 +1324,10 @@ xfs_qm_quotacheck(
flags |= XFS_PQUOTA_CHKD;
}
+ xfs_set_quotacheck_running(mp);
error = xfs_iwalk_threaded(mp, 0, 0, xfs_qm_dqusage_adjust, 0, true,
NULL);
+ xfs_clear_quotacheck_running(mp);
/*
* On error, the inode walk may have partially populated the dquot
