xfs: consolidate superblock logging functions
We now have several superblock loggin functions that are identical
except for the transaction reservation and whether it shoul dbe a
synchronous transaction or not. Consolidate these all into a single
function, a single reserveration and a sync flag and call it
xfs_sync_sb().
Also, xfs_mod_sb() is not really a modification function - it's the
operation of logging the superblock buffer. hence change the name of
it to reflect this.
Note that we have to change the mp->m_update_flags that are passed
around at mount time to a boolean simply to indicate a superblock
update is needed.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c
index c914422..15105db 100644
--- a/fs/xfs/libxfs/xfs_attr_leaf.c
+++ b/fs/xfs/libxfs/xfs_attr_leaf.c
@@ -403,7 +403,7 @@
if (!xfs_sb_version_hasattr2(&mp->m_sb)) {
xfs_sb_version_addattr2(&mp->m_sb);
spin_unlock(&mp->m_sb_lock);
- xfs_mod_sb(tp);
+ xfs_log_sb(tp);
} else
spin_unlock(&mp->m_sb_lock);
}
diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
index 8c39cc8..63a5bb9 100644
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -1221,20 +1221,20 @@
goto bmap_cancel;
if (!xfs_sb_version_hasattr(&mp->m_sb) ||
(!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2)) {
- bool mod_sb = false;
+ bool log_sb = false;
spin_lock(&mp->m_sb_lock);
if (!xfs_sb_version_hasattr(&mp->m_sb)) {
xfs_sb_version_addattr(&mp->m_sb);
- mod_sb = true;
+ log_sb = true;
}
if (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2) {
xfs_sb_version_addattr2(&mp->m_sb);
- mod_sb = true;
+ log_sb = true;
}
spin_unlock(&mp->m_sb_lock);
- if (mod_sb)
- xfs_mod_sb(tp);
+ if (log_sb)
+ xfs_log_sb(tp);
}
error = xfs_bmap_finish(&tp, &flist, &committed);
diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
index 115a7cd..63f8148 100644
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -753,14 +753,13 @@
}
/*
- * xfs_mod_sb() can be used to copy arbitrary changes to the
- * in-core superblock into the superblock buffer to be logged.
- * It does not provide the higher level of locking that is
- * needed to protect the in-core superblock from concurrent
- * access.
+ * xfs_log_sb() can be used to copy arbitrary changes to the in-core superblock
+ * into the superblock buffer to be logged. It does not provide the higher
+ * level of locking that is needed to protect the in-core superblock from
+ * concurrent access.
*/
void
-xfs_mod_sb(
+xfs_log_sb(
struct xfs_trans *tp)
{
struct xfs_mount *mp = tp->t_mountp;
@@ -770,3 +769,35 @@
xfs_trans_buf_set_type(tp, bp, XFS_BLFT_SB_BUF);
xfs_trans_log_buf(tp, bp, 0, sizeof(struct xfs_dsb));
}
+
+/*
+ * xfs_sync_sb
+ *
+ * Sync the superblock to disk.
+ *
+ * Note that the caller is responsible for checking the frozen state of the
+ * filesystem. This procedure uses the non-blocking transaction allocator and
+ * thus will allow modifications to a frozen fs. This is required because this
+ * code can be called during the process of freezing where use of the high-level
+ * allocator would deadlock.
+ */
+int
+xfs_sync_sb(
+ struct xfs_mount *mp,
+ bool wait)
+{
+ struct xfs_trans *tp;
+ int error;
+
+ tp = _xfs_trans_alloc(mp, XFS_TRANS_SB_CHANGE, KM_SLEEP);
+ error = xfs_trans_reserve(tp, &M_RES(mp)->tr_sb, 0, 0);
+ if (error) {
+ xfs_trans_cancel(tp, 0);
+ return error;
+ }
+
+ xfs_log_sb(tp);
+ if (wait)
+ xfs_trans_set_sync(tp);
+ return xfs_trans_commit(tp, 0);
+}
diff --git a/fs/xfs/libxfs/xfs_sb.h b/fs/xfs/libxfs/xfs_sb.h
index e193caa..b25bb9a 100644
--- a/fs/xfs/libxfs/xfs_sb.h
+++ b/fs/xfs/libxfs/xfs_sb.h
@@ -28,7 +28,8 @@
extern int xfs_initialize_perag_data(struct xfs_mount *, xfs_agnumber_t);
extern void xfs_sb_calc_crc(struct xfs_buf *bp);
-extern void xfs_mod_sb(struct xfs_trans *tp);
+extern void xfs_log_sb(struct xfs_trans *tp);
+extern int xfs_sync_sb(struct xfs_mount *mp, bool wait);
extern void xfs_sb_mount_common(struct xfs_mount *mp, struct xfs_sb *sbp);
extern void xfs_sb_from_disk(struct xfs_sb *to, struct xfs_dsb *from);
extern void xfs_sb_to_disk(struct xfs_dsb *to, struct xfs_sb *from);
diff --git a/fs/xfs/libxfs/xfs_shared.h b/fs/xfs/libxfs/xfs_shared.h
index 82404da..8dda4b3 100644
--- a/fs/xfs/libxfs/xfs_shared.h
+++ b/fs/xfs/libxfs/xfs_shared.h
@@ -82,7 +82,7 @@
#define XFS_TRANS_ATTR_RM 23
#define XFS_TRANS_ATTR_FLAG 24
#define XFS_TRANS_CLEAR_AGI_BUCKET 25
-#define XFS_TRANS_QM_SBCHANGE 26
+#define XFS_TRANS_SB_CHANGE 26
/*
* Dummy entries since we use the transaction type to index into the
* trans_type[] in xlog_recover_print_trans_head()
@@ -95,17 +95,15 @@
#define XFS_TRANS_QM_DQCLUSTER 32
#define XFS_TRANS_QM_QINOCREATE 33
#define XFS_TRANS_QM_QUOTAOFF_END 34
-#define XFS_TRANS_SB_UNIT 35
-#define XFS_TRANS_FSYNC_TS 36
-#define XFS_TRANS_GROWFSRT_ALLOC 37
-#define XFS_TRANS_GROWFSRT_ZERO 38
-#define XFS_TRANS_GROWFSRT_FREE 39
-#define XFS_TRANS_SWAPEXT 40
-#define XFS_TRANS_SB_COUNT 41
-#define XFS_TRANS_CHECKPOINT 42
-#define XFS_TRANS_ICREATE 43
-#define XFS_TRANS_CREATE_TMPFILE 44
-#define XFS_TRANS_TYPE_MAX 44
+#define XFS_TRANS_FSYNC_TS 35
+#define XFS_TRANS_GROWFSRT_ALLOC 36
+#define XFS_TRANS_GROWFSRT_ZERO 37
+#define XFS_TRANS_GROWFSRT_FREE 38
+#define XFS_TRANS_SWAPEXT 39
+#define XFS_TRANS_CHECKPOINT 40
+#define XFS_TRANS_ICREATE 41
+#define XFS_TRANS_CREATE_TMPFILE 42
+#define XFS_TRANS_TYPE_MAX 43
/* new transaction types need to be reflected in xfs_logprint(8) */
#define XFS_TRANS_TYPES \
@@ -113,7 +111,6 @@
{ XFS_TRANS_SETATTR_SIZE, "SETATTR_SIZE" }, \
{ XFS_TRANS_INACTIVE, "INACTIVE" }, \
{ XFS_TRANS_CREATE, "CREATE" }, \
- { XFS_TRANS_CREATE_TMPFILE, "CREATE_TMPFILE" }, \
{ XFS_TRANS_CREATE_TRUNC, "CREATE_TRUNC" }, \
{ XFS_TRANS_TRUNCATE_FILE, "TRUNCATE_FILE" }, \
{ XFS_TRANS_REMOVE, "REMOVE" }, \
@@ -134,23 +131,23 @@
{ XFS_TRANS_ATTR_RM, "ATTR_RM" }, \
{ XFS_TRANS_ATTR_FLAG, "ATTR_FLAG" }, \
{ XFS_TRANS_CLEAR_AGI_BUCKET, "CLEAR_AGI_BUCKET" }, \
- { XFS_TRANS_QM_SBCHANGE, "QM_SBCHANGE" }, \
+ { XFS_TRANS_SB_CHANGE, "SBCHANGE" }, \
+ { XFS_TRANS_DUMMY1, "DUMMY1" }, \
+ { XFS_TRANS_DUMMY2, "DUMMY2" }, \
{ XFS_TRANS_QM_QUOTAOFF, "QM_QUOTAOFF" }, \
{ XFS_TRANS_QM_DQALLOC, "QM_DQALLOC" }, \
{ XFS_TRANS_QM_SETQLIM, "QM_SETQLIM" }, \
{ XFS_TRANS_QM_DQCLUSTER, "QM_DQCLUSTER" }, \
{ XFS_TRANS_QM_QINOCREATE, "QM_QINOCREATE" }, \
{ XFS_TRANS_QM_QUOTAOFF_END, "QM_QOFF_END" }, \
- { XFS_TRANS_SB_UNIT, "SB_UNIT" }, \
{ XFS_TRANS_FSYNC_TS, "FSYNC_TS" }, \
{ XFS_TRANS_GROWFSRT_ALLOC, "GROWFSRT_ALLOC" }, \
{ XFS_TRANS_GROWFSRT_ZERO, "GROWFSRT_ZERO" }, \
{ XFS_TRANS_GROWFSRT_FREE, "GROWFSRT_FREE" }, \
{ XFS_TRANS_SWAPEXT, "SWAPEXT" }, \
- { XFS_TRANS_SB_COUNT, "SB_COUNT" }, \
{ XFS_TRANS_CHECKPOINT, "CHECKPOINT" }, \
- { XFS_TRANS_DUMMY1, "DUMMY1" }, \
- { XFS_TRANS_DUMMY2, "DUMMY2" }, \
+ { XFS_TRANS_ICREATE, "ICREATE" }, \
+ { XFS_TRANS_CREATE_TMPFILE, "CREATE_TMPFILE" }, \
{ XLOG_UNMOUNT_REC_TYPE, "UNMOUNT" }
/*
diff --git a/fs/xfs/libxfs/xfs_trans_resv.c b/fs/xfs/libxfs/xfs_trans_resv.c
index 6c1330f..68cb1e7 100644
--- a/fs/xfs/libxfs/xfs_trans_resv.c
+++ b/fs/xfs/libxfs/xfs_trans_resv.c
@@ -716,17 +716,6 @@
}
/*
- * Clearing the quotaflags in the superblock.
- * the super block for changing quota flags: sector size
- */
-STATIC uint
-xfs_calc_qm_sbchange_reservation(
- struct xfs_mount *mp)
-{
- return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
-}
-
-/*
* Adjusting quota limits.
* the xfs_disk_dquot_t: sizeof(struct xfs_disk_dquot)
*/
@@ -864,9 +853,6 @@
* The following transactions are logged in logical format with
* a default log count.
*/
- resp->tr_qm_sbchange.tr_logres = xfs_calc_qm_sbchange_reservation(mp);
- resp->tr_qm_sbchange.tr_logcount = XFS_DEFAULT_LOG_COUNT;
-
resp->tr_qm_setqlim.tr_logres = xfs_calc_qm_setqlim_reservation(mp);
resp->tr_qm_setqlim.tr_logcount = XFS_DEFAULT_LOG_COUNT;
diff --git a/fs/xfs/libxfs/xfs_trans_resv.h b/fs/xfs/libxfs/xfs_trans_resv.h
index 1097d14..2d5bdfc 100644
--- a/fs/xfs/libxfs/xfs_trans_resv.h
+++ b/fs/xfs/libxfs/xfs_trans_resv.h
@@ -56,7 +56,6 @@
struct xfs_trans_res tr_growrtalloc; /* grow realtime allocations */
struct xfs_trans_res tr_growrtzero; /* grow realtime zeroing */
struct xfs_trans_res tr_growrtfree; /* grow realtime freeing */
- struct xfs_trans_res tr_qm_sbchange; /* change quota flags */
struct xfs_trans_res tr_qm_setqlim; /* adjust quota limits */
struct xfs_trans_res tr_qm_dqalloc; /* allocate quota on disk */
struct xfs_trans_res tr_qm_quotaoff; /* turn quota off */