ceph: fix uninline data function

For CEPH_OSD_CMPXATTR_MODE_U64, OSD expects the u64 to be encoded
as string in object's xattr.

Signed-off-by: Yan, Zheng <zyan@redhat.com>

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index e723482c5f3737ea2dad53c016ca308e0735dbe5..cab1cf5a330bbbcd4eca974aa6780f5f0f1f894e 100644 (file)
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -1539,19 +1539,27 @@ int ceph_uninline_data(struct file *filp, struct page *locked_page)
 
        osd_req_op_extent_osd_data_pages(req, 1, &page, len, 0, false, false);
 
-       err = osd_req_op_xattr_init(req, 0, CEPH_OSD_OP_CMPXATTR,
-                                   "inline_version", &inline_version,
-                                   sizeof(inline_version),
-                                   CEPH_OSD_CMPXATTR_OP_GT,
-                                   CEPH_OSD_CMPXATTR_MODE_U64);
-       if (err)
-               goto out_put;
-
-       err = osd_req_op_xattr_init(req, 2, CEPH_OSD_OP_SETXATTR,
-                                   "inline_version", &inline_version,
-                                   sizeof(inline_version), 0, 0);
-       if (err)
-               goto out_put;
+       {
+               __le64 xattr_buf = cpu_to_le64(inline_version);
+               err = osd_req_op_xattr_init(req, 0, CEPH_OSD_OP_CMPXATTR,
+                                           "inline_version", &xattr_buf,
+                                           sizeof(xattr_buf),
+                                           CEPH_OSD_CMPXATTR_OP_GT,
+                                           CEPH_OSD_CMPXATTR_MODE_U64);
+               if (err)
+                       goto out_put;
+       }
+
+       {
+               char xattr_buf[32];
+               int xattr_len = snprintf(xattr_buf, sizeof(xattr_buf),
+                                        "%llu", inline_version);
+               err = osd_req_op_xattr_init(req, 2, CEPH_OSD_OP_SETXATTR,
+                                           "inline_version",
+                                           xattr_buf, xattr_len, 0, 0);
+               if (err)
+                       goto out_put;
+       }
 
        ceph_osdc_build_request(req, 0, NULL, CEPH_NOSNAP, &inode->i_mtime);
        err = ceph_osdc_start_request(&fsc->client->osdc, req, false);