Revision 5befb98b30cce19bdf2221ea48c39f1fec5c4568 authored by Linus Torvalds on 24 August 2013, 18:33:21 UTC, committed by Linus Torvalds on 24 August 2013, 18:33:21 UTC
Pull SCSI fixes from James Bottomley: "This is a set of small bug fixes for lpfc and zfcp and a fix for a fairly nasty bug in sg where a process which cancels I/O completes in a kernel thread which would then try to write back to the now gone userspace and end up writing to a random kernel address instead" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: [SCSI] zfcp: remove access control tables interface (keep sysfs files) [SCSI] zfcp: fix schedule-inside-lock in scsi_device list loops [SCSI] zfcp: fix lock imbalance by reworking request queue locking [SCSI] sg: Fix user memory corruption when SG_IO is interrupted by a signal [SCSI] lpfc: Don't force CONFIG_GENERIC_CSUM on
Kconfig.debug
config DEBUG_PAGEALLOC
bool "Debug page memory allocations"
depends on DEBUG_KERNEL
depends on !HIBERNATION || ARCH_SUPPORTS_DEBUG_PAGEALLOC && !PPC && !SPARC
depends on !KMEMCHECK
select PAGE_POISONING if !ARCH_SUPPORTS_DEBUG_PAGEALLOC
select PAGE_GUARD if ARCH_SUPPORTS_DEBUG_PAGEALLOC
---help---
Unmap pages from the kernel linear mapping after free_pages().
This results in a large slowdown, but helps to find certain types
of memory corruption.
For architectures which don't enable ARCH_SUPPORTS_DEBUG_PAGEALLOC,
fill the pages with poison patterns after free_pages() and verify
the patterns before alloc_pages(). Additionally,
this option cannot be enabled in combination with hibernation as
that would result in incorrect warnings of memory corruption after
a resume because free pages are not saved to the suspend image.
config WANT_PAGE_DEBUG_FLAGS
bool
config PAGE_POISONING
bool
select WANT_PAGE_DEBUG_FLAGS
config PAGE_GUARD
bool
select WANT_PAGE_DEBUG_FLAGS
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