aboutsummaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
authorYan, Zheng <zyan@redhat.com>2014-09-16 09:50:45 (GMT)
committerSage Weil <sage@redhat.com>2014-10-14 19:56:48 (GMT)
commite4339d28f640a7c0d92903bcf389a2dfa281270d (patch)
tree428c172af1081d29613732cdcf7801f958be358f /include
parent0abb43dcacb52145aa265f82c914375d59dfe2da (diff)
libceph: reference counting pagelist
this allow pagelist to present data that may be sent multiple times. Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Sage Weil <sage@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/ceph/pagelist.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/ceph/pagelist.h b/include/linux/ceph/pagelist.h
index 9660d6b..5f871d8 100644
--- a/include/linux/ceph/pagelist.h
+++ b/include/linux/ceph/pagelist.h
@@ -2,6 +2,7 @@
#define __FS_CEPH_PAGELIST_H
#include <linux/list.h>
+#include <linux/atomic.h>
struct ceph_pagelist {
struct list_head head;
@@ -10,6 +11,7 @@ struct ceph_pagelist {
size_t room;
struct list_head free_list;
size_t num_pages_free;
+ atomic_t refcnt;
};
struct ceph_pagelist_cursor {
@@ -26,9 +28,10 @@ static inline void ceph_pagelist_init(struct ceph_pagelist *pl)
pl->room = 0;
INIT_LIST_HEAD(&pl->free_list);
pl->num_pages_free = 0;
+ atomic_set(&pl->refcnt, 1);
}
-extern int ceph_pagelist_release(struct ceph_pagelist *pl);
+extern void ceph_pagelist_release(struct ceph_pagelist *pl);
extern int ceph_pagelist_append(struct ceph_pagelist *pl, const void *d, size_t l);

Privacy Policy