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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 /fs/ceph/inode.c
parent51e9273796a57c08801f45580d3db3c51987a0cb (diff)
downloadlinux-30c156d9951e0aa88202707d80c583b0a09d3167.tar.bz2
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 'fs/ceph/inode.c')
-rw-r--r--fs/ceph/inode.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 6c5903e0a976..d035e0ab6029 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -446,6 +446,7 @@ struct inode *ceph_alloc_inode(struct super_block *sb)
ci->i_symlink = NULL;
memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout));
+ RCU_INIT_POINTER(ci->i_layout.pool_ns, NULL);
ci->i_pool_ns_len = 0;
ci->i_fragtree = RB_ROOT;
@@ -570,6 +571,8 @@ void ceph_destroy_inode(struct inode *inode)
if (ci->i_xattrs.prealloc_blob)
ceph_buffer_put(ci->i_xattrs.prealloc_blob);
+ ceph_put_string(ci->i_layout.pool_ns);
+
call_rcu(&inode->i_rcu, ceph_i_callback);
}