ext4: check s_chksum_driver when looking for bg csum presence

[firefly-linux-kernel-4.4.55.git] / fs / xfs / xfs_sysfs.c

diff --git a/fs/xfs/xfs_sysfs.c b/fs/xfs/xfs_sysfs.c
index ae9aa7a1a06a8ffca33a9e71abda860485ded34e..9835139ce1ec24cd2e1d5358377bd844d4323ab7 100644 (file)
--- a/fs/xfs/xfs_sysfs.c
+++ b/fs/xfs/xfs_sysfs.c
@@ -18,6 +18,9 @@
 
 #include "xfs.h"
 #include "xfs_sysfs.h"
+#include "xfs_log_format.h"
+#include "xfs_log.h"
+#include "xfs_log_priv.h"
 
 struct xfs_sysfs_attr {
        struct attribute attr;
@@ -47,3 +50,116 @@ to_attr(struct attribute *attr)
 struct kobj_type xfs_mp_ktype = {
        .release = xfs_sysfs_release,
 };
+
+/* 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,
+};
+
+static inline struct xlog *
+to_xlog(struct kobject *kobject)
+{
+       struct xfs_kobj *kobj = to_kobj(kobject);
+       return container_of(kobj, struct xlog, l_kobj);
+}
+
+STATIC ssize_t
+xfs_log_show(
+       struct kobject          *kobject,
+       struct attribute        *attr,
+       char                    *buf)
+{
+       struct xlog *log = to_xlog(kobject);
+       struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
+
+       return xfs_attr->show ? xfs_attr->show(buf, log) : 0;
+}
+
+STATIC ssize_t
+xfs_log_store(
+       struct kobject          *kobject,
+       struct attribute        *attr,
+       const char              *buf,
+       size_t                  count)
+{
+       struct xlog *log = to_xlog(kobject);
+       struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
+
+       return xfs_attr->store ? xfs_attr->store(buf, count, log) : 0;
+}
+
+static struct sysfs_ops xfs_log_ops = {
+       .show = xfs_log_show,
+       .store = xfs_log_store,
+};
+
+struct kobj_type xfs_log_ktype = {
+       .release = xfs_sysfs_release,
+       .sysfs_ops = &xfs_log_ops,
+       .default_attrs = xfs_log_attrs,
+};