tree 212ac3940dc154fc2cffe0917c18e15e6e685ee3
parent 3e0d8a01043ded18711fe4a0a320e4491f580ce1
author Jeff Mahoney <jeffm@suse.com> 1396464026 -0400
committer Jan Kara <jack@suse.cz> 1396476374 +0200

reiserfs: fix race in readdir

jdm-20004 reiserfs_delete_xattrs: Couldn't delete all xattrs (-2)

The -ENOENT is due to readdir calling dir_emit on the same entry twice.

If the dir_emit callback sleeps and the tree is changed underneath us,
we won't be able to trust deh_offset(deh) anymore. We need to save
next_pos before we might sleep so we can find the next entry.

CC: stable@vger.kernel.org
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Jan Kara <jack@suse.cz>