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-rw-r--r--fs/xfs/xfs_sysfs.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/fs/xfs/xfs_sysfs.c b/fs/xfs/xfs_sysfs.c
index 88361d76f73a..9835139ce1ec 100644
--- a/fs/xfs/xfs_sysfs.c
+++ b/fs/xfs/xfs_sysfs.c
@@ -53,7 +53,71 @@ struct kobj_type xfs_mp_ktype = {
/* xlog */
+STATIC ssize_t
+log_head_lsn_show(
+ char *buf,
+ void *data)
+{
+ struct xlog *log = data;
+ int cycle;
+ int block;
+
+ spin_lock(&log->l_icloglock);
+ cycle = log->l_curr_cycle;
+ block = log->l_curr_block;
+ spin_unlock(&log->l_icloglock);
+
+ return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block);
+}
+XFS_SYSFS_ATTR_RO(log_head_lsn);
+
+STATIC ssize_t
+log_tail_lsn_show(
+ char *buf,
+ void *data)
+{
+ struct xlog *log = data;
+ int cycle;
+ int block;
+
+ xlog_crack_atomic_lsn(&log->l_tail_lsn, &cycle, &block);
+ return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block);
+}
+XFS_SYSFS_ATTR_RO(log_tail_lsn);
+
+STATIC ssize_t
+reserve_grant_head_show(
+ char *buf,
+ void *data)
+{
+ struct xlog *log = data;
+ int cycle;
+ int bytes;
+
+ xlog_crack_grant_head(&log->l_reserve_head.grant, &cycle, &bytes);
+ return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes);
+}
+XFS_SYSFS_ATTR_RO(reserve_grant_head);
+
+STATIC ssize_t
+write_grant_head_show(
+ char *buf,
+ void *data)
+{
+ struct xlog *log = data;
+ int cycle;
+ int bytes;
+
+ xlog_crack_grant_head(&log->l_write_head.grant, &cycle, &bytes);
+ return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes);
+}
+XFS_SYSFS_ATTR_RO(write_grant_head);
+
static struct attribute *xfs_log_attrs[] = {
+ ATTR_LIST(log_head_lsn),
+ ATTR_LIST(log_tail_lsn),
+ ATTR_LIST(reserve_grant_head),
+ ATTR_LIST(write_grant_head),
NULL,
};