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authorIlya Dryomov <idryomov@gmail.com>2019-03-20 09:46:58 +0100
committerIlya Dryomov <idryomov@gmail.com>2019-03-20 16:27:40 +0100
commitbb229bbb3bf63d23128e851a1f3b85c083178fa1 (patch)
tree5b6b57fc2acdb4c09fd034e23c4930eb2ec2043a /include
parent16d80c54ad42c573a897ae7bcf5a9816be54e6fe (diff)
downloadlinux-bb229bbb3bf63d23128e851a1f3b85c083178fa1.tar.bz2
libceph: wait for latest osdmap in ceph_monc_blacklist_add()
Because map updates are distributed lazily, an OSD may not know about the new blacklist for quite some time after "osd blacklist add" command is completed. This makes it possible for a blacklisted but still alive client to overwrite a post-blacklist update, resulting in data corruption. Waiting for latest osdmap in ceph_monc_blacklist_add() and thus using the post-blacklist epoch for all post-blacklist requests ensures that all such requests "wait" for the blacklist to come into force on their respective OSDs. Cc: stable@vger.kernel.org Fixes: 6305a3b41515 ("libceph: support for blacklisting clients") Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/ceph/libceph.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index a420c07904bc..337d5049ff93 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -294,6 +294,8 @@ extern void ceph_destroy_client(struct ceph_client *client);
extern int __ceph_open_session(struct ceph_client *client,
unsigned long started);
extern int ceph_open_session(struct ceph_client *client);
+int ceph_wait_for_latest_osdmap(struct ceph_client *client,
+ unsigned long timeout);
/* pagevec.c */
extern void ceph_release_page_vector(struct page **pages, int num_pages);