Yan, Zheng ff1c42b0c6 ceph: only dirty ITER_IOVEC pages for direct read ...

commit 85784f9395987a422fa04263e7c0fb13da11eb5c upstream.

If a page is already locked, attempting to dirty it leads to a deadlock
in lock_page().  This is what currently happens to ITER_BVEC pages when
a dio-enabled loop device is backed by ceph:

  $ losetup --direct-io /dev/loop0 /mnt/cephfs/img
  $ xfs_io -c 'pread 0 4k' /dev/loop0

Follow other file systems and only dirty ITER_IOVEC pages.

Cc: stable@kernel.org
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-04-08 12:12:42 +02:00

..

acl.c

ceph: Propagate dentry down to inode_change_ok()

2016-09-22 10:56:19 +02:00

addr.c

ceph: fix readpage from fscache

2017-09-07 08:35:40 +02:00

cache.c

ceph: fix readpage from fscache

2017-09-07 08:35:40 +02:00

cache.h

ceph: improve fscache revalidation

2016-06-01 10:31:50 +02:00

caps.c

ceph: unlock dangling spinlock in try_flush_caps()

2017-11-02 09:49:13 +01:00

ceph_frag.c

ceph: factor out libceph from Ceph file system

2010-10-20 15:37:28 -07:00

debugfs.c

ceph: don't show symlink target in debugfs/mdsc

2016-05-26 01:15:32 +02:00

dir.c

ceph: fix race in concurrent readdir

2017-07-27 15:08:07 -07:00

export.c

ceph: fix d_obtain_alias() misuses

2016-06-24 23:49:03 -04:00

file.c

ceph: only dirty ITER_IOVEC pages for direct read

2018-04-08 12:12:42 +02:00

inode.c

ceph: don't update_dentry_lease unless we actually got one

2017-10-21 17:21:37 +02:00

ioctl.c

ceph: fix bogus endianness change in ceph_ioctl_set_layout

2017-10-21 17:21:37 +02:00

ioctl.h

ceph: fully initialize new layout

2012-05-16 14:28:27 -05:00

Kconfig

ceph: add acl for cephfs

2013-12-31 20:32:01 +02:00

locks.c

ceph: fix mandatory flock check

2016-10-03 16:13:49 +02:00

Makefile

ceph: add acl for cephfs

2013-12-31 20:32:01 +02:00

mds_client.c

ceph: drop negative child dentries before try pruning inode's alias

2017-12-20 10:07:16 +01:00

mds_client.h

ceph: handle CEPH_SESSION_REJECT message

2016-10-03 16:13:50 +02:00

mdsmap.c

ceph: CEPH_FEATURE_MDSENC support

2016-05-26 01:15:31 +02:00

snap.c

ceph: cleanup ceph_flush_snaps()

2016-07-28 03:00:44 +02:00

strings.c

ceph: handle CEPH_SESSION_REJECT message

2016-10-03 16:13:50 +02:00

super.c

ceph: fix uninitialized dentry pointer in ceph_real_mount()

2016-10-18 12:10:59 +02:00

super.h

ceph: try getting buffer capability for readahead/fadvise

2017-05-08 07:47:55 +02:00

xattr.c

ceph: fix memory leak in __ceph_setxattr()

2017-05-20 14:28:39 +02:00