Alex Elder d8fb02abdc ceph: create a new session lock to avoid lock inversion ... Lockdep was reporting a possible circular lock dependency in dentry_lease_is_valid(). That function needs to sample the session's s_cap_gen and and s_cap_ttl fields coherently, but needs to do so while holding a dentry lock. The s_cap_lock field was being used to protect the two fields, but that can't be taken while holding a lock on a dentry within the session. In most cases, the s_cap_gen and s_cap_ttl fields only get operated on separately. But in three cases they need to be updated together. Implement a new lock to protect the spots updating both fields atomically is required. Signed-off-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Sage Weil <sage@newdream.net>		2012-02-02 12:49:19 -08:00
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addr.c	ceph: use i_ceph_lock instead of i_lock	2011-12-07 10:46:44 -08:00
caps.c	ceph: create a new session lock to avoid lock inversion	2012-02-02 12:49:19 -08:00
ceph_frag.c	ceph: factor out libceph from Ceph file system	2010-10-20 15:37:28 -07:00
debugfs.c	ceph: explicitly reference rename old_dentry parent dir in request	2011-07-26 11:31:14 -07:00
dir.c	ceph: create a new session lock to avoid lock inversion	2012-02-02 12:49:19 -08:00
export.c	ceph: avoid d_parent in ceph_dentry_hash; fix ceph_encode_fh() hashing bug	2011-07-26 11:30:55 -07:00
file.c	ceph: fix SEEK_CUR, SEEK_SET regression	2011-12-13 09:19:26 -08:00
inode.c	ceph: use i_ceph_lock instead of i_lock	2011-12-07 10:46:44 -08:00
ioctl.c	ceph: use i_ceph_lock instead of i_lock	2011-12-07 10:46:44 -08:00
ioctl.h	ceph: document ioctls	2011-10-25 16:10:15 -07:00
Kconfig	ceph: factor out libceph from Ceph file system	2010-10-20 15:37:28 -07:00
locks.c	ceph: unwind canceled flock state	2011-06-07 21:36:45 -07:00
Makefile	ceph: Makefile: Remove unnessary code	2011-01-12 15:15:13 -08:00
mds_client.c	ceph: create a new session lock to avoid lock inversion	2012-02-02 12:49:19 -08:00
mds_client.h	ceph: create a new session lock to avoid lock inversion	2012-02-02 12:49:19 -08:00
mdsmap.c	ceph: factor out libceph from Ceph file system	2010-10-20 15:37:28 -07:00
snap.c	ceph: use i_ceph_lock instead of i_lock	2011-12-07 10:46:44 -08:00
strings.c	ceph: factor out libceph from Ceph file system	2010-10-20 15:37:28 -07:00
super.c	ceph: fix rasize reporting by ceph_show_options	2011-12-02 09:27:54 -08:00
super.h	ceph: use i_ceph_lock instead of i_lock	2011-12-07 10:46:44 -08:00
xattr.c	ceph: change "ceph.layout" xattr to be "ceph.file.layout"	2012-02-02 12:48:52 -08:00