@@ -52,6 +52,7 @@ xfs-y += $(addprefix libxfs/, \
xfs_inode_fork.o \
xfs_inode_buf.o \
xfs_log_rlimit.o \
+ xfs_rmap.o \
xfs_sb.o \
xfs_symlink_remote.o \
xfs_trans_resv.o \
@@ -27,6 +27,7 @@
#include "xfs_defer.h"
#include "xfs_inode.h"
#include "xfs_btree.h"
+#include "xfs_rmap.h"
#include "xfs_alloc_btree.h"
#include "xfs_alloc.h"
#include "xfs_extent_busy.h"
@@ -36,7 +37,6 @@
#include "xfs_trans.h"
#include "xfs_buf_item.h"
#include "xfs_log.h"
-#include "xfs_rmap.h"
struct workqueue_struct *xfs_alloc_wq;
@@ -649,6 +649,14 @@ xfs_alloc_ag_vextent(
ASSERT(!args->wasfromfl || !args->isfl);
ASSERT(args->agbno % args->alignment == 0);
+ /* if not file data, insert new block into the reverse map btree */
+ if (args->oinfo.oi_owner != XFS_RMAP_OWN_UNKNOWN) {
+ error = xfs_rmap_alloc(args->tp, args->agbp, args->agno,
+ args->agbno, args->len, &args->oinfo);
+ if (error)
+ return error;
+ }
+
if (!args->wasfromfl) {
error = xfs_alloc_update_counters(args->tp, args->pag,
args->agbp,
@@ -1615,12 +1623,19 @@ xfs_free_ag_extent(
xfs_extlen_t nlen; /* new length of freespace */
xfs_perag_t *pag; /* per allocation group data */
+ bno_cur = cnt_cur = NULL;
mp = tp->t_mountp;
+
+ if (oinfo->oi_owner != XFS_RMAP_OWN_UNKNOWN) {
+ error = xfs_rmap_free(tp, agbp, agno, bno, len, oinfo);
+ if (error)
+ goto error0;
+ }
+
/*
* Allocate and initialize a cursor for the by-block btree.
*/
bno_cur = xfs_allocbt_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_BNO);
- cnt_cur = NULL;
/*
* Look for a neighboring block on the left (lower block numbers)
* that is contiguous with this space.
new file mode 100644
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2014 Red Hat, Inc.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "xfs.h"
+#include "xfs_fs.h"
+#include "xfs_shared.h"
+#include "xfs_format.h"
+#include "xfs_log_format.h"
+#include "xfs_trans_resv.h"
+#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_btree.h"
+#include "xfs_trans.h"
+#include "xfs_alloc.h"
+#include "xfs_rmap.h"
+#include "xfs_trans_space.h"
+#include "xfs_trace.h"
+#include "xfs_error.h"
+#include "xfs_extent_busy.h"
+
+int
+xfs_rmap_free(
+ struct xfs_trans *tp,
+ struct xfs_buf *agbp,
+ xfs_agnumber_t agno,
+ xfs_agblock_t bno,
+ xfs_extlen_t len,
+ struct xfs_owner_info *oinfo)
+{
+ struct xfs_mount *mp = tp->t_mountp;
+ int error = 0;
+
+ if (!xfs_sb_version_hasrmapbt(&mp->m_sb))
+ return 0;
+
+ trace_xfs_rmap_unmap(mp, agno, bno, len, false, oinfo);
+ if (1)
+ goto out_error;
+ trace_xfs_rmap_unmap_done(mp, agno, bno, len, false, oinfo);
+ return 0;
+
+out_error:
+ trace_xfs_rmap_unmap_error(mp, agno, error, _RET_IP_);
+ return error;
+}
+
+int
+xfs_rmap_alloc(
+ struct xfs_trans *tp,
+ struct xfs_buf *agbp,
+ xfs_agnumber_t agno,
+ xfs_agblock_t bno,
+ xfs_extlen_t len,
+ struct xfs_owner_info *oinfo)
+{
+ struct xfs_mount *mp = tp->t_mountp;
+ int error = 0;
+
+ if (!xfs_sb_version_hasrmapbt(&mp->m_sb))
+ return 0;
+
+ trace_xfs_rmap_map(mp, agno, bno, len, false, oinfo);
+ if (1)
+ goto out_error;
+ trace_xfs_rmap_map_done(mp, agno, bno, len, false, oinfo);
+ return 0;
+
+out_error:
+ trace_xfs_rmap_map_error(mp, agno, error, _RET_IP_);
+ return error;
+}
@@ -64,4 +64,15 @@ xfs_rmap_skip_owner_update(
oi->oi_owner = XFS_RMAP_OWN_UNKNOWN;
}
+/* Reverse mapping functions. */
+
+struct xfs_buf;
+
+int xfs_rmap_alloc(struct xfs_trans *tp, struct xfs_buf *agbp,
+ xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len,
+ struct xfs_owner_info *oinfo);
+int xfs_rmap_free(struct xfs_trans *tp, struct xfs_buf *agbp,
+ xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len,
+ struct xfs_owner_info *oinfo);
+
#endif /* __XFS_RMAP_H__ */
@@ -2423,6 +2423,83 @@ DEFINE_MAP_EXTENT_DEFERRED_EVENT(xfs_defer_map_extent);
DEFINE_BMAP_FREE_DEFERRED_EVENT(xfs_bmap_free_defer);
DEFINE_BMAP_FREE_DEFERRED_EVENT(xfs_bmap_free_deferred);
+/* rmap tracepoints */
+DECLARE_EVENT_CLASS(xfs_rmap_class,
+ TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno,
+ xfs_agblock_t agbno, xfs_extlen_t len, bool unwritten,
+ struct xfs_owner_info *oinfo),
+ TP_ARGS(mp, agno, agbno, len, unwritten, oinfo),
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(xfs_agnumber_t, agno)
+ __field(xfs_agblock_t, agbno)
+ __field(xfs_extlen_t, len)
+ __field(uint64_t, owner)
+ __field(uint64_t, offset)
+ __field(unsigned long, flags)
+ ),
+ TP_fast_assign(
+ __entry->dev = mp->m_super->s_dev;
+ __entry->agno = agno;
+ __entry->agbno = agbno;
+ __entry->len = len;
+ __entry->owner = oinfo->oi_owner;
+ __entry->offset = oinfo->oi_offset;
+ __entry->flags = oinfo->oi_flags;
+ ),
+ TP_printk("dev %d:%d agno %u agbno %u len %u owner %lld offset %llu flags 0x%lx",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->agno,
+ __entry->agbno,
+ __entry->len,
+ __entry->owner,
+ __entry->offset,
+ __entry->flags)
+);
+#define DEFINE_RMAP_EVENT(name) \
+DEFINE_EVENT(xfs_rmap_class, name, \
+ TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, \
+ xfs_agblock_t agbno, xfs_extlen_t len, bool unwritten, \
+ struct xfs_owner_info *oinfo), \
+ TP_ARGS(mp, agno, agbno, len, unwritten, oinfo))
+
+/* simple AG-based error/%ip tracepoint class */
+DECLARE_EVENT_CLASS(xfs_ag_error_class,
+ TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, int error,
+ unsigned long caller_ip),
+ TP_ARGS(mp, agno, error, caller_ip),
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(xfs_agnumber_t, agno)
+ __field(int, error)
+ __field(unsigned long, caller_ip)
+ ),
+ TP_fast_assign(
+ __entry->dev = mp->m_super->s_dev;
+ __entry->agno = agno;
+ __entry->error = error;
+ __entry->caller_ip = caller_ip;
+ ),
+ TP_printk("dev %d:%d agno %u error %d caller %ps",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->agno,
+ __entry->error,
+ (char *)__entry->caller_ip)
+);
+
+#define DEFINE_AG_ERROR_EVENT(name) \
+DEFINE_EVENT(xfs_ag_error_class, name, \
+ TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, int error, \
+ unsigned long caller_ip), \
+ TP_ARGS(mp, agno, error, caller_ip))
+
+DEFINE_RMAP_EVENT(xfs_rmap_unmap);
+DEFINE_RMAP_EVENT(xfs_rmap_unmap_done);
+DEFINE_AG_ERROR_EVENT(xfs_rmap_unmap_error);
+DEFINE_RMAP_EVENT(xfs_rmap_map);
+DEFINE_RMAP_EVENT(xfs_rmap_map_done);
+DEFINE_AG_ERROR_EVENT(xfs_rmap_map_error);
+
#endif /* _TRACE_XFS_H */
#undef TRACE_INCLUDE_PATH