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Diffstat (limited to 'fs/xfs/xfs_log_recover.c')
-rw-r--r--fs/xfs/xfs_log_recover.c75
1 files changed, 67 insertions, 8 deletions
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 87b1c331f9eb..28d1abfe835e 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -24,6 +24,7 @@
#include "xfs_bit.h"
#include "xfs_sb.h"
#include "xfs_mount.h"
+#include "xfs_defer.h"
#include "xfs_da_format.h"
#include "xfs_da_btree.h"
#include "xfs_inode.h"
@@ -4716,7 +4717,8 @@ STATIC int
xlog_recover_process_cui(
struct xfs_mount *mp,
struct xfs_ail *ailp,
- struct xfs_log_item *lip)
+ struct xfs_log_item *lip,
+ struct xfs_defer_ops *dfops)
{
struct xfs_cui_log_item *cuip;
int error;
@@ -4729,7 +4731,7 @@ xlog_recover_process_cui(
return 0;
spin_unlock(&ailp->xa_lock);
- error = xfs_cui_recover(mp, cuip);
+ error = xfs_cui_recover(mp, cuip, dfops);
spin_lock(&ailp->xa_lock);
return error;
@@ -4756,7 +4758,8 @@ STATIC int
xlog_recover_process_bui(
struct xfs_mount *mp,
struct xfs_ail *ailp,
- struct xfs_log_item *lip)
+ struct xfs_log_item *lip,
+ struct xfs_defer_ops *dfops)
{
struct xfs_bui_log_item *buip;
int error;
@@ -4769,7 +4772,7 @@ xlog_recover_process_bui(
return 0;
spin_unlock(&ailp->xa_lock);
- error = xfs_bui_recover(mp, buip);
+ error = xfs_bui_recover(mp, buip, dfops);
spin_lock(&ailp->xa_lock);
return error;
@@ -4805,6 +4808,46 @@ static inline bool xlog_item_is_intent(struct xfs_log_item *lip)
}
}
+/* Take all the collected deferred ops and finish them in order. */
+static int
+xlog_finish_defer_ops(
+ struct xfs_mount *mp,
+ struct xfs_defer_ops *dfops)
+{
+ struct xfs_trans *tp;
+ int64_t freeblks;
+ uint resblks;
+ int error;
+
+ /*
+ * We're finishing the defer_ops that accumulated as a result of
+ * recovering unfinished intent items during log recovery. We
+ * reserve an itruncate transaction because it is the largest
+ * permanent transaction type. Since we're the only user of the fs
+ * right now, take 93% (15/16) of the available free blocks. Use
+ * weird math to avoid a 64-bit division.
+ */
+ freeblks = percpu_counter_sum(&mp->m_fdblocks);
+ if (freeblks <= 0)
+ return -ENOSPC;
+ resblks = min_t(int64_t, UINT_MAX, freeblks);
+ resblks = (resblks * 15) >> 4;
+ error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, resblks,
+ 0, XFS_TRANS_RESERVE, &tp);
+ if (error)
+ return error;
+
+ error = xfs_defer_finish(&tp, dfops);
+ if (error)
+ goto out_cancel;
+
+ return xfs_trans_commit(tp);
+
+out_cancel:
+ xfs_trans_cancel(tp);
+ return error;
+}
+
/*
* When this is called, all of the log intent items which did not have
* corresponding log done items should be in the AIL. What we do now
@@ -4825,10 +4868,12 @@ STATIC int
xlog_recover_process_intents(
struct xlog *log)
{
- struct xfs_log_item *lip;
- int error = 0;
+ struct xfs_defer_ops dfops;
struct xfs_ail_cursor cur;
+ struct xfs_log_item *lip;
struct xfs_ail *ailp;
+ xfs_fsblock_t firstfsb;
+ int error = 0;
#if defined(DEBUG) || defined(XFS_WARN)
xfs_lsn_t last_lsn;
#endif
@@ -4839,6 +4884,7 @@ xlog_recover_process_intents(
#if defined(DEBUG) || defined(XFS_WARN)
last_lsn = xlog_assign_lsn(log->l_curr_cycle, log->l_curr_block);
#endif
+ xfs_defer_init(&dfops, &firstfsb);
while (lip != NULL) {
/*
* We're done when we see something other than an intent.
@@ -4859,6 +4905,12 @@ xlog_recover_process_intents(
*/
ASSERT(XFS_LSN_CMP(last_lsn, lip->li_lsn) >= 0);
+ /*
+ * NOTE: If your intent processing routine can create more
+ * deferred ops, you /must/ attach them to the dfops in this
+ * routine or else those subsequent intents will get
+ * replayed in the wrong order!
+ */
switch (lip->li_type) {
case XFS_LI_EFI:
error = xlog_recover_process_efi(log->l_mp, ailp, lip);
@@ -4867,10 +4919,12 @@ xlog_recover_process_intents(
error = xlog_recover_process_rui(log->l_mp, ailp, lip);
break;
case XFS_LI_CUI:
- error = xlog_recover_process_cui(log->l_mp, ailp, lip);
+ error = xlog_recover_process_cui(log->l_mp, ailp, lip,
+ &dfops);
break;
case XFS_LI_BUI:
- error = xlog_recover_process_bui(log->l_mp, ailp, lip);
+ error = xlog_recover_process_bui(log->l_mp, ailp, lip,
+ &dfops);
break;
}
if (error)
@@ -4880,6 +4934,11 @@ xlog_recover_process_intents(
out:
xfs_trans_ail_cursor_done(&cur);
spin_unlock(&ailp->xa_lock);
+ if (error)
+ xfs_defer_cancel(&dfops);
+ else
+ error = xlog_finish_defer_ops(log->l_mp, &dfops);
+
return error;
}