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-rw-r--r--fs/xfs/xfs_sysfs.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/fs/xfs/xfs_sysfs.c b/fs/xfs/xfs_sysfs.c
index a3c6b15487..17485666b6 100644
--- a/fs/xfs/xfs_sysfs.c
+++ b/fs/xfs/xfs_sysfs.c
@@ -229,6 +229,15 @@ pwork_threads_show(
}
XFS_SYSFS_ATTR_RW(pwork_threads);
+/*
+ * The "LARP" (Logged extended Attribute Recovery Persistence) debugging knob
+ * sets the XFS_DA_OP_LOGGED flag on all xfs_attr_set operations performed on
+ * V5 filesystems. As a result, the intermediate progress of all setxattr and
+ * removexattr operations are tracked via the log and can be restarted during
+ * recovery. This is useful for testing xattr recovery prior to merging of the
+ * parent pointer feature which requires it to maintain consistency, and may be
+ * enabled for userspace xattrs in the future.
+ */
static ssize_t
larp_store(
struct kobject *kobject,
@@ -253,6 +262,58 @@ larp_show(
XFS_SYSFS_ATTR_RW(larp);
#endif /* DEBUG */
+STATIC ssize_t
+bload_leaf_slack_store(
+ struct kobject *kobject,
+ const char *buf,
+ size_t count)
+{
+ int ret;
+ int val;
+
+ ret = kstrtoint(buf, 0, &val);
+ if (ret)
+ return ret;
+
+ xfs_globals.bload_leaf_slack = val;
+ return count;
+}
+
+STATIC ssize_t
+bload_leaf_slack_show(
+ struct kobject *kobject,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.bload_leaf_slack);
+}
+XFS_SYSFS_ATTR_RW(bload_leaf_slack);
+
+STATIC ssize_t
+bload_node_slack_store(
+ struct kobject *kobject,
+ const char *buf,
+ size_t count)
+{
+ int ret;
+ int val;
+
+ ret = kstrtoint(buf, 0, &val);
+ if (ret)
+ return ret;
+
+ xfs_globals.bload_node_slack = val;
+ return count;
+}
+
+STATIC ssize_t
+bload_node_slack_show(
+ struct kobject *kobject,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.bload_node_slack);
+}
+XFS_SYSFS_ATTR_RW(bload_node_slack);
+
static struct attribute *xfs_dbg_attrs[] = {
ATTR_LIST(bug_on_assert),
ATTR_LIST(log_recovery_delay),
@@ -262,6 +323,8 @@ static struct attribute *xfs_dbg_attrs[] = {
ATTR_LIST(pwork_threads),
ATTR_LIST(larp),
#endif
+ ATTR_LIST(bload_leaf_slack),
+ ATTR_LIST(bload_node_slack),
NULL,
};
ATTRIBUTE_GROUPS(xfs_dbg);