Linus Torvalds 6e1ce3c345 af_unix: split 'u->readlock' into two: 'iolock' and 'bindlock' ... Right now we use the 'readlock' both for protecting some of the af_unix IO path and for making the bind be single-threaded. The two are independent, but using the same lock makes for a nasty deadlock due to ordering with regards to filesystem locking. The bind locking would want to nest outside the VSF pathname locking, but the IO locking wants to nest inside some of those same locks. We tried to fix this earlier with commit c845acb324 ("af_unix: Fix splice-bind deadlock") which moved the readlock inside the vfs locks, but that caused problems with overlayfs that will then call back into filesystem routines that take the lock in the wrong order anyway. Splitting the locks means that we can go back to having the bind lock be the outermost lock, and we don't have any deadlocks with lock ordering. Acked-by: Rainer Weikusat <rweikusat@cyberadapt.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-09-04 13:29:29 -07:00
..
acpi	treewide: replace obsolete _refok by __ref	2016-08-02 17:31:41 -04:00
asm-generic	locking/qrwlock: Fix write unlock bug on big endian systems	2016-08-10 14:13:27 +02:00
clocksource
crypto	A number of improvements for the /dev/random driver; the most	2016-07-27 15:11:55 -07:00
drm	Merge branch 'drm-next-4.8' of git://people.freedesktop.org/~agd5f/linux into drm-next	2016-08-08 16:45:33 +10:00
dt-bindings	ARM: DT updates for v4.8	2016-08-01 18:37:45 -04:00
keys
kvm	KVM/ARM Changes for v4.8 - Take 2	2016-08-04 13:59:56 +02:00
linux	bonding: Fix bonding crash	2016-09-04 11:41:12 -07:00
math-emu
media	dma-mapping: use unsigned long for dma_attrs	2016-08-04 08:50:07 -04:00
memory
misc
net	af_unix: split 'u->readlock' into two: 'iolock' and 'bindlock'	2016-09-04 13:29:29 -07:00
pcmcia
ras
rdma	IB/core: Use memdup_user() rather than duplicating its implementation	2016-08-23 12:40:13 -04:00
rxrpc
scsi	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2016-08-04 20:04:37 -04:00
soc	ARM: SoC driver updates for v4.8	2016-08-01 18:36:01 -04:00
sound	Merge tag 'drm-for-v4.8' of git://people.freedesktop.org/~airlied/linux	2016-08-01 21:44:08 -04:00
target
trace	Luiz Capitulino noticed that the tick_stop tracepoint wasn't being parsed	2016-08-09 10:34:09 -07:00
uapi	include/uapi/linux/ipx.h: fix conflicting defitions with glibc netipx/ipx.h	2016-08-22 16:25:15 -07:00
video
xen	xen: change the type of xen_vcpu_id to uint32_t	2016-08-24 18:17:27 +01:00
Kbuild