static kmem_zone_t *xfs_buf_zone;
-static struct workqueue_struct *xfslogd_workqueue;
-
#ifdef XFS_BUF_LOCK_TRACKING
# define XB_SET_OWNER(bp) ((bp)->b_last_holder = current->pid)
# define XB_CLEAR_OWNER(bp) ((bp)->b_last_holder = -1)
* have to check that the buffer falls within the filesystem bounds.
*/
eofs = XFS_FSB_TO_BB(btp->bt_mount, btp->bt_mount->m_sb.sb_dblocks);
- if (blkno >= eofs) {
+ if (blkno < 0 || blkno >= eofs) {
/*
* XXX (dgc): we should really be returning -EFSCORRUPTED here,
* but none of the higher level infrastructure supports
struct xfs_buf *bp)
{
INIT_WORK(&bp->b_iodone_work, xfs_buf_ioend_work);
- queue_work(xfslogd_workqueue, &bp->b_iodone_work);
+ queue_work(bp->b_target->bt_mount->m_buf_workqueue, &bp->b_iodone_work);
}
void
if (!xfs_buf_zone)
goto out;
- xfslogd_workqueue = alloc_workqueue("xfslogd",
- WQ_MEM_RECLAIM | WQ_HIGHPRI | WQ_FREEZABLE, 1);
- if (!xfslogd_workqueue)
- goto out_free_buf_zone;
-
return 0;
- out_free_buf_zone:
- kmem_zone_destroy(xfs_buf_zone);
out:
return -ENOMEM;
}
void
xfs_buf_terminate(void)
{
- destroy_workqueue(xfslogd_workqueue);
kmem_zone_destroy(xfs_buf_zone);
}
struct xfs_dquot *udqp = NULL;
struct xfs_dquot *gdqp = NULL;
struct xfs_dquot *pdqp = NULL;
- struct xfs_trans_res tres;
+ struct xfs_trans_res *tres;
uint resblks;
trace_xfs_create(dp, name);
if (is_dir) {
rdev = 0;
resblks = XFS_MKDIR_SPACE_RES(mp, name->len);
- tres.tr_logres = M_RES(mp)->tr_mkdir.tr_logres;
- tres.tr_logcount = XFS_MKDIR_LOG_COUNT;
+ tres = &M_RES(mp)->tr_mkdir;
tp = xfs_trans_alloc(mp, XFS_TRANS_MKDIR);
} else {
resblks = XFS_CREATE_SPACE_RES(mp, name->len);
- tres.tr_logres = M_RES(mp)->tr_create.tr_logres;
- tres.tr_logcount = XFS_CREATE_LOG_COUNT;
+ tres = &M_RES(mp)->tr_create;
tp = xfs_trans_alloc(mp, XFS_TRANS_CREATE);
}
* the case we'll drop the one we have and get a more
* appropriate transaction later.
*/
- tres.tr_logflags = XFS_TRANS_PERM_LOG_RES;
- error = xfs_trans_reserve(tp, &tres, resblks, 0);
+ error = xfs_trans_reserve(tp, tres, resblks, 0);
if (error == -ENOSPC) {
/* flush outstanding delalloc blocks and retry */
xfs_flush_inodes(mp);
- error = xfs_trans_reserve(tp, &tres, resblks, 0);
+ error = xfs_trans_reserve(tp, tres, resblks, 0);
}
if (error == -ENOSPC) {
/* No space at all so try a "no-allocation" reservation */
resblks = 0;
- error = xfs_trans_reserve(tp, &tres, 0, 0);
+ error = xfs_trans_reserve(tp, tres, 0, 0);
}
if (error) {
cancel_flags = 0;
struct xlog *log = mp->m_log;
int needed = 0;
- if (!xfs_fs_writable(mp))
+ if (!xfs_fs_writable(mp, SB_FREEZE_WRITE))
return 0;
if (!xlog_cil_empty(log))
xfs_sysfs_del(&mp->m_kobj);
}
-int
-xfs_fs_writable(xfs_mount_t *mp)
+/*
+ * Determine whether modifications can proceed. The caller specifies the minimum
+ * freeze level for which modifications should not be allowed. This allows
+ * certain operations to proceed while the freeze sequence is in progress, if
+ * necessary.
+ */
+bool
+xfs_fs_writable(
+ struct xfs_mount *mp,
+ int level)
{
- return !(mp->m_super->s_writers.frozen || XFS_FORCED_SHUTDOWN(mp) ||
- (mp->m_flags & XFS_MOUNT_RDONLY));
+ ASSERT(level > SB_UNFROZEN);
+ if ((mp->m_super->s_writers.frozen >= level) ||
+ XFS_FORCED_SHUTDOWN(mp) || (mp->m_flags & XFS_MOUNT_RDONLY))
+ return false;
+
+ return true;
}
/*
*
* Sync the superblock counters to disk.
*
- * Note this code can be called during the process of freezing, so
- * we may need to use the transaction allocator which does not
- * block when the transaction subsystem is in its frozen state.
+ * Note this code can be called during the process of freezing, so we use the
+ * transaction allocator that does not block when the transaction subsystem is
+ * in its frozen state.
*/
int
xfs_log_sbcount(xfs_mount_t *mp)
xfs_trans_t *tp;
int error;
- if (!xfs_fs_writable(mp))
+ /* allow this to proceed during the freeze sequence... */
+ if (!xfs_fs_writable(mp, SB_FREEZE_COMPLETE))
return 0;
xfs_icsb_sync_counters(mp, 0);
/* low free space thresholds */
struct xfs_kobj m_kobj;
+ struct workqueue_struct *m_buf_workqueue;
struct workqueue_struct *m_data_workqueue;
struct workqueue_struct *m_unwritten_workqueue;
struct workqueue_struct *m_cil_workqueue;
extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
extern int xfs_readsb(xfs_mount_t *, int);
extern void xfs_freesb(xfs_mount_t *);
-extern int xfs_fs_writable(xfs_mount_t *);
+extern bool xfs_fs_writable(struct xfs_mount *mp, int level);
extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
extern int xfs_dev_is_read_only(struct xfs_mount *, char *);
{
xfs_trans_t *tp;
int error;
- xfs_qoff_logitem_t *qoffi=NULL;
- uint oldsbqflag=0;
+ xfs_qoff_logitem_t *qoffi;
+
+ *qoffstartp = NULL;
tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF);
error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_quotaoff, 0, 0);
- if (error)
- goto error0;
+ if (error) {
+ xfs_trans_cancel(tp, 0);
+ goto out;
+ }
qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
xfs_trans_log_quotaoff_item(tp, qoffi);
spin_lock(&mp->m_sb_lock);
- oldsbqflag = mp->m_sb.sb_qflags;
mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
spin_unlock(&mp->m_sb_lock);
*/
xfs_trans_set_sync(tp);
error = xfs_trans_commit(tp, 0);
+ if (error)
+ goto out;
-error0:
- if (error) {
- xfs_trans_cancel(tp, 0);
- /*
- * No one else is modifying sb_qflags, so this is OK.
- * We still hold the quotaofflock.
- */
- spin_lock(&mp->m_sb_lock);
- mp->m_sb.sb_qflags = oldsbqflag;
- spin_unlock(&mp->m_sb_lock);
- }
*qoffstartp = qoffi;
+out:
return error;
}
xfs_init_mount_workqueues(
struct xfs_mount *mp)
{
+ mp->m_buf_workqueue = alloc_workqueue("xfs-buf/%s",
+ WQ_MEM_RECLAIM|WQ_HIGHPRI|WQ_FREEZABLE, 1,
+ mp->m_fsname);
+ if (!mp->m_buf_workqueue)
+ goto out;
+
mp->m_data_workqueue = alloc_workqueue("xfs-data/%s",
WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname);
if (!mp->m_data_workqueue)
- goto out;
+ goto out_destroy_buf;
mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s",
WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname);
destroy_workqueue(mp->m_unwritten_workqueue);
out_destroy_data_iodone_queue:
destroy_workqueue(mp->m_data_workqueue);
+out_destroy_buf:
+ destroy_workqueue(mp->m_buf_workqueue);
out:
return -ENOMEM;
}
destroy_workqueue(mp->m_cil_workqueue);
destroy_workqueue(mp->m_data_workqueue);
destroy_workqueue(mp->m_unwritten_workqueue);
+ destroy_workqueue(mp->m_buf_workqueue);
}
/*