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authorIlya Dryomov <idryomov@gmail.com>2016-04-29 19:54:20 +0200
committerIlya Dryomov <idryomov@gmail.com>2016-05-26 00:36:22 +0200
commitd30291b985d1854565d7f2c82a4457869d5265e8 (patch)
tree43b99c978c5e4ea321d72590dfeebd42c10de28e /fs/ceph/ioctl.c
parent711da55d36a6f1eddcd340969be7223110d2f6b0 (diff)
downloadlinux-d30291b985d1854565d7f2c82a4457869d5265e8.tar.bz2
libceph: variable-sized ceph_object_id
Currently ceph_object_id can hold object names of up to 100 (CEPH_MAX_OID_NAME_LEN) characters. This is enough for all use cases, expect one - long rbd image names: - a format 1 header is named "<imgname>.rbd" - an object that points to a format 2 header is named "rbd_id.<imgname>" We operate on these potentially long-named objects during rbd map, and, for format 1 images, during header refresh. (A format 2 header name is a small system-generated string.) Lift this 100 character limit by making ceph_object_id be able to point to an externally-allocated string. Apart from being able to work with almost arbitrarily-long named objects, this allows us to reduce the size of ceph_object_id from >100 bytes to 64 bytes. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/ioctl.c')
-rw-r--r--fs/ceph/ioctl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c
index f851d8d70158..db296709784a 100644
--- a/fs/ceph/ioctl.c
+++ b/fs/ceph/ioctl.c
@@ -213,7 +213,7 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg)
ceph_ino(inode), dl.object_no);
oloc.pool = ceph_file_layout_pg_pool(ci->i_layout);
- ceph_oid_set_name(&oid, dl.object_name);
+ ceph_oid_printf(&oid, "%s", dl.object_name);
r = ceph_oloc_oid_to_pg(osdc->osdmap, &oloc, &oid, &pgid);
if (r < 0) {