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authorDave Chinner <david@fromorbit.com>2016-03-15 01:44:35 +0100
committerDave Chinner <david@fromorbit.com>2016-03-15 01:44:35 +0100
commit2cdb958aba6afbced5bc563167813b972b6acbfe (patch)
tree1ad9f3ec2753f80e94e62353ffd5d80d24c3c8f9 /fs/xfs/xfs_mount.h
parentMerge branch 'xfs-misc-fixes-4.6-3' into for-next (diff)
parentxfs: always set rvalp in xfs_dir2_node_trim_free (diff)
downloadlinux-2cdb958aba6afbced5bc563167813b972b6acbfe.tar.xz
linux-2cdb958aba6afbced5bc563167813b972b6acbfe.zip
Merge branch 'xfs-misc-fixes-4.6-4' into for-next
Diffstat (limited to 'fs/xfs/xfs_mount.h')
-rw-r--r--fs/xfs/xfs_mount.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 1c8611f6b464..bac6b3435591 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -147,6 +147,17 @@ typedef struct xfs_mount {
* to various other kinds of pain inflicted on the pNFS server.
*/
__uint32_t m_generation;
+
+#ifdef DEBUG
+ /*
+ * DEBUG mode instrumentation to test and/or trigger delayed allocation
+ * block killing in the event of failed writes. When enabled, all
+ * buffered writes are forced to fail. All delalloc blocks in the range
+ * of the write (including pre-existing delalloc blocks!) are tossed as
+ * part of the write failure error handling sequence.
+ */
+ bool m_fail_writes;
+#endif
} xfs_mount_t;
/*
@@ -263,6 +274,20 @@ xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
}
+#ifdef DEBUG
+static inline bool
+xfs_mp_fail_writes(struct xfs_mount *mp)
+{
+ return mp->m_fail_writes;
+}
+#else
+static inline bool
+xfs_mp_fail_writes(struct xfs_mount *mp)
+{
+ return 0;
+}
+#endif
+
/*
* Per-ag incore structure, copies of information in agf and agi, to improve the
* performance of allocation group selection.