Eric Farman dfa758638f s390/mm: fix refcount usage for 4K pgste ... s390 no longer uses the _mapcount field in struct page to identify the page table format being used. While the code was diligent in handling the different mappings, it neglected to turn "off" the map bits when alloc_pgste was being used. This resulted in bits remaining "on" in the _refcount field, and thus an artifically huge "in use" count that prevents the pages from actually being released by __free_page. There's opportunity for improvement in the "1 vs 3" vs "1U vs 3U" vs "0x1 vs 0x11" etc. variations for all these calls, I am just keeping things simple compared to neighboring code. Fixes: 620b4e9031 ("s390: use _refcount for pgtables") Reported-by: Halil Pasic <pasic@linux.ibm.com> Bisected-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Eric Farman <farman@linux.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2018-07-02 11:25:39 +02:00
..
appldata	treewide: kzalloc() -> kcalloc()	2018-06-12 16:19:22 -07:00
boot	s390/boot: remove unused COMPILE_VERSION and ccflags-y	2018-04-16 09:10:24 +02:00
configs	s390: update defconfigs	2018-04-27 06:51:31 +02:00
crypto	s390/archrandom: Rework arch random implementation.	2018-05-30 11:18:04 +02:00
hypfs	treewide: Use array_size() in vmalloc()	2018-06-12 16:19:22 -07:00
include	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2018-06-19 07:44:51 +09:00
kernel	s390: Correct register corruption in critical section cleanup	2018-06-25 10:07:12 +02:00
kvm	- Error path bug fix for overflow tests (Dan)	2018-06-12 18:28:00 -07:00
lib	s390: introduce compile time check for empty .bss section	2018-05-09 10:55:01 +02:00
mm	s390/mm: fix refcount usage for 4K pgste	2018-07-02 11:25:39 +02:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2018-06-06 18:39:49 -07:00
numa	s390: add a few more SPDX identifiers	2017-12-05 07:51:09 +01:00
oprofile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
pci	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-06-04 20:27:54 -07:00
purgatory	s390/purgatory: Fix endless interrupt loop	2018-05-18 07:24:35 +02:00
scripts	s390: introduce compile time check for empty .bss section	2018-05-09 10:55:01 +02:00
tools	KVM: s390: implement CPU model only facilities	2018-03-09 09:44:17 +00:00
defconfig	s390: update defconfig	2018-04-16 10:29:34 +02:00
Kbuild	s390/kexec_file: Add purgatory	2018-04-16 09:10:22 +02:00
Kconfig	mm: introduce ARCH_HAS_PTE_SPECIAL	2018-06-07 17:34:35 -07:00
Kconfig.debug	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Makefile	kbuild: add endianness flag to CHEKCFLAGS	2018-05-29 22:05:08 +09:00