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| author | Yan, Zheng <zyan@redhat.com> | 2018-03-16 11:22:29 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2018-03-30 11:17:48 +0200 |
| commit | 85784f9395987a422fa04263e7c0fb13da11eb5c (patch) | |
| tree | f8f998acb306c25992468d0a52e9082616b37ea5 /fs/xfs/xfs_iops.h | |
| parent | 3eb2ce825ea1ad89d20f7a3b5780df850e4be274 (diff) | |
| download | linux-85784f9395987a422fa04263e7c0fb13da11eb5c.tar.gz linux-85784f9395987a422fa04263e7c0fb13da11eb5c.tar.xz | |
ceph: only dirty ITER_IOVEC pages for direct read
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>
Diffstat (limited to 'fs/xfs/xfs_iops.h')
0 files changed, 0 insertions, 0 deletions