| commit | 2c205ef7667cecc48dfa4e1fe3f4701666717846 | |
| author | Ilya Dryomov <idryomov@gmail.com> | |
| Thu, 3 May 2018 14:10:09 +0000 (3 16:10 +0200) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Wed, 16 May 2018 08:12:30 +0000 (16 10:12 +0200) | ||
| tree | 5d8f622a8f922db3706436a267895b3bc704de82 | treesnapshot (tar.gz zip) |
| parent | 092d4bd6bdf55899d238737d6870adef6f225211 | commitdiff |
ceph: fix rsize/wsize capping in ceph_direct_read_write()
commit 3a15b38fd2efc1d648cb33186bf71e9138c93491 upstream.
rsize/wsize cap should be applied before ceph_osdc_new_request() is
called. Otherwise, if the size is limited by the cap instead of the
stripe unit, ceph_osdc_new_request() would setup an extent op that is
bigger than what dio_get_pages_alloc() would pin and add to the page
vector, triggering asserts in the messenger.
Cc: stable@vger.kernel.org
Fixes: 95cca2b44e54 ("ceph: limit osd write size")
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 3a15b38fd2efc1d648cb33186bf71e9138c93491 upstream.
rsize/wsize cap should be applied before ceph_osdc_new_request() is
called. Otherwise, if the size is limited by the cap instead of the
stripe unit, ceph_osdc_new_request() would setup an extent op that is
bigger than what dio_get_pages_alloc() would pin and add to the page
vector, triggering asserts in the messenger.
Cc: stable@vger.kernel.org
Fixes: 95cca2b44e54 ("ceph: limit osd write size")
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| fs/ceph/file.c | diffblobblamehistory |