From 114e73ccfa2a51b47160f49524aa46f0d70cb8a9 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Fri, 4 May 2018 15:30:23 -0700 Subject: [PATCH] xfs: remove direct calls to _qm_dqread The quota initialization code needs an "uncached" variant of _dqget to read in default quota limits and timers before the dquot cache is fully set up. We've already split up _dqget into its component pieces so create a fourth variant to address this need, and make dqread internal to xfs_dquot.c again. Signed-off-by: Darrick J. Wong Reviewed-by: Brian Foster Reviewed-by: Christoph Hellwig --- fs/xfs/xfs_dquot.c | 24 +++++++++++++++++++++++- fs/xfs/xfs_dquot.h | 5 +++-- fs/xfs/xfs_qm.c | 25 +++++++++++++------------ 3 files changed, 39 insertions(+), 15 deletions(-) diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 22bb52ee82c8..5593a344732c 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -586,7 +586,7 @@ err: * * If XFS_QMOPT_DQALLOC is set, allocate a dquot on disk if it needed. */ -int +static int xfs_qm_dqread( struct xfs_mount *mp, xfs_dqid_t id, @@ -832,6 +832,28 @@ restart: return 0; } +/* + * Given a dquot id and type, read and initialize a dquot from the on-disk + * metadata. This function is only for use during quota initialization so + * it ignores the dquot cache assuming that the dquot shrinker isn't set up. + * The caller is responsible for _qm_dqdestroy'ing the returned dquot. + */ +int +xfs_qm_dqget_uncached( + struct xfs_mount *mp, + xfs_dqid_t id, + uint type, + struct xfs_dquot **dqpp) +{ + int error; + + error = xfs_qm_dqget_checks(mp, type); + if (error) + return error; + + return xfs_qm_dqread(mp, id, type, 0, dqpp); +} + /* Return the quota id for a given inode and type. */ xfs_dqid_t xfs_qm_id_for_quotatype( diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h index 8a5b30e952b0..38a42874a98c 100644 --- a/fs/xfs/xfs_dquot.h +++ b/fs/xfs/xfs_dquot.h @@ -160,8 +160,6 @@ static inline bool xfs_dquot_lowsp(struct xfs_dquot *dqp) #define XFS_QM_ISPDQ(dqp) ((dqp)->dq_flags & XFS_DQ_PROJ) #define XFS_QM_ISGDQ(dqp) ((dqp)->dq_flags & XFS_DQ_GROUP) -extern int xfs_qm_dqread(struct xfs_mount *, xfs_dqid_t, uint, - uint, struct xfs_dquot **); extern void xfs_qm_dqdestroy(xfs_dquot_t *); extern int xfs_qm_dqflush(struct xfs_dquot *, struct xfs_buf **); extern void xfs_qm_dqunpin_wait(xfs_dquot_t *); @@ -179,6 +177,9 @@ extern int xfs_qm_dqget_inode(struct xfs_inode *ip, uint type, struct xfs_dquot **dqpp); extern int xfs_qm_dqget_next(struct xfs_mount *mp, xfs_dqid_t id, uint type, struct xfs_dquot **dqpp); +extern int xfs_qm_dqget_uncached(struct xfs_mount *mp, + xfs_dqid_t id, uint type, + struct xfs_dquot **dqpp); extern void xfs_qm_dqput(xfs_dquot_t *); extern void xfs_dqlock2(struct xfs_dquot *, struct xfs_dquot *); diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index f86b3608567d..fac649518101 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -563,8 +563,7 @@ xfs_qm_set_defquota( struct xfs_def_quota *defq; int error; - error = xfs_qm_dqread(mp, 0, type, 0, &dqp); - + error = xfs_qm_dqget_uncached(mp, 0, type, &dqp); if (!error) { xfs_disk_dquot_t *ddqp = &dqp->q_core; @@ -590,11 +589,12 @@ xfs_qm_set_defquota( */ STATIC int xfs_qm_init_quotainfo( - xfs_mount_t *mp) + struct xfs_mount *mp) { - xfs_quotainfo_t *qinf; - int error; - xfs_dquot_t *dqp; + struct xfs_quotainfo *qinf; + struct xfs_dquot *dqp; + uint type; + int error; ASSERT(XFS_IS_QUOTA_RUNNING(mp)); @@ -637,12 +637,13 @@ xfs_qm_init_quotainfo( * user/group/proj quota types, otherwise a default value is used. * This should be split into different fields per quota type. */ - error = xfs_qm_dqread(mp, 0, - XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : - (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : - XFS_DQ_PROJ), - 0, &dqp); - + if (XFS_IS_UQUOTA_RUNNING(mp)) + type = XFS_DQ_USER; + else if (XFS_IS_GQUOTA_RUNNING(mp)) + type = XFS_DQ_GROUP; + else + type = XFS_DQ_PROJ; + error = xfs_qm_dqget_uncached(mp, 0, type, &dqp); if (!error) { xfs_disk_dquot_t *ddqp = &dqp->q_core;