ceph: don't call truncate_pagecache in ceph_writepages_start

Browse source

truncate_pagecache() may decrease inode's reference. This can cause
deadlock if inode's last reference is dropped and iput_final() wants
to evict the inode. (evict() calls inode_wait_for_writeback(), which
waits for ceph_writepages_start() to return).

The fix is use work thead to truncate dirty pages. Also add 'forced
umount' check to ceph_update_writeable_page(), which prevents new
pages getting dirty.

Signed-off-by: Yan, Zheng <zyan@redhat.com>

...

This commit is contained in:

Yan, Zheng 2016-04-15 13:56:12 +08:00 • committed by Ilya Dryomov

parent 77310320c2

commit 6c93df5db6

3 changed files with 38 additions and 9 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

14

fs/ceph/addr.c

View file

11

fs/ceph/inode.c

View file

22

fs/ceph/mds_client.c

View file