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authorYan, Zheng <zyan@redhat.com>2016-02-14 11:24:31 +0800
committerIlya Dryomov <idryomov@gmail.com>2016-07-28 02:55:37 +0200
commit30c156d9951e0aa88202707d80c583b0a09d3167 (patch)
treeafda9d55374a9b078a5ddd8d5a8c1f2a847eccd5 /include/linux/ceph
parent51e9273796a57c08801f45580d3db3c51987a0cb (diff)
libceph: rados pool namespace support
Add pool namesapce pointer to struct ceph_file_layout and struct ceph_object_locator. Pool namespace is used by when mapping object to PG, it's also used when composing OSD request. The namespace pointer in struct ceph_file_layout is RCU protected. So libceph can read namespace without taking lock. Signed-off-by: Yan, Zheng <zyan@redhat.com> [idryomov@gmail.com: ceph_oloc_destroy(), misc minor changes] Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'include/linux/ceph')
-rw-r--r--include/linux/ceph/ceph_fs.h2
-rw-r--r--include/linux/ceph/osdmap.h10
2 files changed, 7 insertions, 5 deletions
diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
index e5a5fb9ca3f5..08b8fd72261e 100644
--- a/include/linux/ceph/ceph_fs.h
+++ b/include/linux/ceph/ceph_fs.h
@@ -53,6 +53,7 @@ struct ceph_file_layout_legacy {
__le32 fl_pg_pool; /* namespace, crush ruleset, rep level */
} __attribute__ ((packed));
+struct ceph_string;
/*
* ceph_file_layout - describe data layout for a file/inode
*/
@@ -62,6 +63,7 @@ struct ceph_file_layout {
u32 stripe_count; /* over this many objects */
u32 object_size; /* until objects are this big */
s64 pool_id; /* rados pool id */
+ struct ceph_string __rcu *pool_ns; /* rados pool namespace */
};
extern int ceph_file_layout_is_valid(const struct ceph_file_layout *layout);
diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h
index 21d7f048959f..9a9041784dcf 100644
--- a/include/linux/ceph/osdmap.h
+++ b/include/linux/ceph/osdmap.h
@@ -63,11 +63,13 @@ static inline bool ceph_can_shift_osds(struct ceph_pg_pool_info *pool)
struct ceph_object_locator {
s64 pool;
+ struct ceph_string *pool_ns;
};
static inline void ceph_oloc_init(struct ceph_object_locator *oloc)
{
oloc->pool = -1;
+ oloc->pool_ns = NULL;
}
static inline bool ceph_oloc_empty(const struct ceph_object_locator *oloc)
@@ -75,11 +77,9 @@ static inline bool ceph_oloc_empty(const struct ceph_object_locator *oloc)
return oloc->pool == -1;
}
-static inline void ceph_oloc_copy(struct ceph_object_locator *dest,
- const struct ceph_object_locator *src)
-{
- dest->pool = src->pool;
-}
+void ceph_oloc_copy(struct ceph_object_locator *dest,
+ const struct ceph_object_locator *src);
+void ceph_oloc_destroy(struct ceph_object_locator *oloc);
/*
* Maximum supported by kernel client object name length