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Diffstat (limited to 'fs/xfs/xfs_dquot.c')
-rw-r--r--fs/xfs/xfs_dquot.c107
1 files changed, 42 insertions, 65 deletions
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index c15d61d47a06..5afedcbc78c7 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -38,8 +38,8 @@
* otherwise by the lowest id first, see xfs_dqlock2.
*/
-struct kmem_zone *xfs_qm_dqtrxzone;
-static struct kmem_zone *xfs_qm_dqzone;
+struct kmem_cache *xfs_dqtrx_cache;
+static struct kmem_cache *xfs_dquot_cache;
static struct lock_class_key xfs_dquot_group_class;
static struct lock_class_key xfs_dquot_project_class;
@@ -57,7 +57,7 @@ xfs_qm_dqdestroy(
mutex_destroy(&dqp->q_qlock);
XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot);
- kmem_cache_free(xfs_qm_dqzone, dqp);
+ kmem_cache_free(xfs_dquot_cache, dqp);
}
/*
@@ -289,13 +289,12 @@ xfs_dquot_set_prealloc_limits(struct xfs_dquot *dqp)
*/
STATIC int
xfs_dquot_disk_alloc(
- struct xfs_trans **tpp,
struct xfs_dquot *dqp,
struct xfs_buf **bpp)
{
struct xfs_bmbt_irec map;
- struct xfs_trans *tp = *tpp;
- struct xfs_mount *mp = tp->t_mountp;
+ struct xfs_trans *tp;
+ struct xfs_mount *mp = dqp->q_mount;
struct xfs_buf *bp;
xfs_dqtype_t qtype = xfs_dquot_type(dqp);
struct xfs_inode *quotip = xfs_quota_inode(mp, qtype);
@@ -304,29 +303,35 @@ xfs_dquot_disk_alloc(
trace_xfs_dqalloc(dqp);
+ error = xfs_trans_alloc(mp, &M_RES(mp)->tr_qm_dqalloc,
+ XFS_QM_DQALLOC_SPACE_RES(mp), 0, 0, &tp);
+ if (error)
+ return error;
+
xfs_ilock(quotip, XFS_ILOCK_EXCL);
+ xfs_trans_ijoin(tp, quotip, 0);
+
if (!xfs_this_quota_on(dqp->q_mount, qtype)) {
/*
* Return if this type of quotas is turned off while we didn't
* have an inode lock
*/
- xfs_iunlock(quotip, XFS_ILOCK_EXCL);
- return -ESRCH;
+ error = -ESRCH;
+ goto err_cancel;
}
- xfs_trans_ijoin(tp, quotip, XFS_ILOCK_EXCL);
-
error = xfs_iext_count_may_overflow(quotip, XFS_DATA_FORK,
XFS_IEXT_ADD_NOSPLIT_CNT);
if (error)
- return error;
+ goto err_cancel;
/* Create the block mapping. */
error = xfs_bmapi_write(tp, quotip, dqp->q_fileoffset,
XFS_DQUOT_CLUSTER_SIZE_FSB, XFS_BMAPI_METADATA, 0, &map,
&nmaps);
if (error)
- return error;
+ goto err_cancel;
+
ASSERT(map.br_blockcount == XFS_DQUOT_CLUSTER_SIZE_FSB);
ASSERT(nmaps == 1);
ASSERT((map.br_startblock != DELAYSTARTBLOCK) &&
@@ -341,7 +346,7 @@ xfs_dquot_disk_alloc(
error = xfs_trans_get_buf(tp, mp->m_ddev_targp, dqp->q_blkno,
mp->m_quotainfo->qi_dqchunklen, 0, &bp);
if (error)
- return error;
+ goto err_cancel;
bp->b_ops = &xfs_dquot_buf_ops;
/*
@@ -371,16 +376,25 @@ xfs_dquot_disk_alloc(
* is responsible for unlocking any buffer passed back, either
* manually or by committing the transaction. On error, the buffer is
* released and not passed back.
+ *
+ * Keep the quota inode ILOCKed until after the transaction commit to
+ * maintain the atomicity of bmap/rmap updates.
*/
xfs_trans_bhold(tp, bp);
- error = xfs_defer_finish(tpp);
+ error = xfs_trans_commit(tp);
+ xfs_iunlock(quotip, XFS_ILOCK_EXCL);
if (error) {
- xfs_trans_bhold_release(*tpp, bp);
- xfs_trans_brelse(*tpp, bp);
+ xfs_buf_relse(bp);
return error;
}
+
*bpp = bp;
return 0;
+
+err_cancel:
+ xfs_trans_cancel(tp);
+ xfs_iunlock(quotip, XFS_ILOCK_EXCL);
+ return error;
}
/*
@@ -458,7 +472,7 @@ xfs_dquot_alloc(
{
struct xfs_dquot *dqp;
- dqp = kmem_cache_zalloc(xfs_qm_dqzone, GFP_KERNEL | __GFP_NOFAIL);
+ dqp = kmem_cache_zalloc(xfs_dquot_cache, GFP_KERNEL | __GFP_NOFAIL);
dqp->q_type = type;
dqp->q_id = id;
@@ -471,7 +485,7 @@ xfs_dquot_alloc(
* Offset of dquot in the (fixed sized) dquot chunk.
*/
dqp->q_bufoffset = (id % mp->m_quotainfo->qi_dqperchunk) *
- sizeof(xfs_dqblk_t);
+ sizeof(struct xfs_dqblk);
/*
* Because we want to use a counting completion, complete
@@ -629,43 +643,6 @@ xfs_dquot_to_disk(
ddqp->d_rtbtimer = xfs_dquot_to_disk_ts(dqp, dqp->q_rtb.timer);
}
-/* Allocate and initialize the dquot buffer for this in-core dquot. */
-static int
-xfs_qm_dqread_alloc(
- struct xfs_mount *mp,
- struct xfs_dquot *dqp,
- struct xfs_buf **bpp)
-{
- struct xfs_trans *tp;
- int error;
-
- error = xfs_trans_alloc(mp, &M_RES(mp)->tr_qm_dqalloc,
- XFS_QM_DQALLOC_SPACE_RES(mp), 0, 0, &tp);
- if (error)
- goto err;
-
- error = xfs_dquot_disk_alloc(&tp, dqp, bpp);
- if (error)
- goto err_cancel;
-
- error = xfs_trans_commit(tp);
- if (error) {
- /*
- * Buffer was held to the transaction, so we have to unlock it
- * manually here because we're not passing it back.
- */
- xfs_buf_relse(*bpp);
- *bpp = NULL;
- goto err;
- }
- return 0;
-
-err_cancel:
- xfs_trans_cancel(tp);
-err:
- return error;
-}
-
/*
* Read in the ondisk dquot using dqtobp() then copy it to an incore version,
* and release the buffer immediately. If @can_alloc is true, fill any
@@ -689,7 +666,7 @@ xfs_qm_dqread(
/* Try to read the buffer, allocating if necessary. */
error = xfs_dquot_disk_read(mp, dqp, &bp);
if (error == -ENOENT && can_alloc)
- error = xfs_qm_dqread_alloc(mp, dqp, &bp);
+ error = xfs_dquot_disk_alloc(dqp, &bp);
if (error)
goto err;
@@ -1363,22 +1340,22 @@ xfs_dqlock2(
int __init
xfs_qm_init(void)
{
- xfs_qm_dqzone = kmem_cache_create("xfs_dquot",
+ xfs_dquot_cache = kmem_cache_create("xfs_dquot",
sizeof(struct xfs_dquot),
0, 0, NULL);
- if (!xfs_qm_dqzone)
+ if (!xfs_dquot_cache)
goto out;
- xfs_qm_dqtrxzone = kmem_cache_create("xfs_dqtrx",
+ xfs_dqtrx_cache = kmem_cache_create("xfs_dqtrx",
sizeof(struct xfs_dquot_acct),
0, 0, NULL);
- if (!xfs_qm_dqtrxzone)
- goto out_free_dqzone;
+ if (!xfs_dqtrx_cache)
+ goto out_free_dquot_cache;
return 0;
-out_free_dqzone:
- kmem_cache_destroy(xfs_qm_dqzone);
+out_free_dquot_cache:
+ kmem_cache_destroy(xfs_dquot_cache);
out:
return -ENOMEM;
}
@@ -1386,8 +1363,8 @@ out:
void
xfs_qm_exit(void)
{
- kmem_cache_destroy(xfs_qm_dqtrxzone);
- kmem_cache_destroy(xfs_qm_dqzone);
+ kmem_cache_destroy(xfs_dqtrx_cache);
+ kmem_cache_destroy(xfs_dquot_cache);
}
/*
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-15 12:31:35 +0300