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Christoph Lameter d8117ce5a6 [IA64] Fix race in the accessed/dirty bit handlers ... A pte may be zapped by the swapper, exiting process, unmapping or page migration while the accessed or dirty bit handers are about to run. In that case the accessed bit or dirty is set on an zeroed pte which leads the VM to conclude that this is a swap pte. This may lead to - Messages from the vm like swap_free: Bad swap file entry 4000000000000000 - Processes being aborted swap_dup: Bad swap file entry 4000000000000000 VM: killing process .... Page migration is particular suitable for the creation of this race since it needs to remove and restore page table entries. The fix here is to check for the present bit and simply not update the pte if the page is not present anymore. If the page is not present then the fault handler should run next which will take care of the problem by bringing the page back and then mark the page dirty or move it onto the active list. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>		19 years ago
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configs	[IA64] gensparse_defconfig: turn on PNPACPI	19 years ago
dig	[PATCH] drive_info removal outside of arch/i386	19 years ago
hp	[PATCH] remove unused tmp_buf_sem's	19 years ago
ia32	[IA64] sys32_signal() forgets to initialize ->sa_mask	19 years ago
kernel	[IA64] Fix race in the accessed/dirty bit handlers	19 years ago
lib	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6	20 years ago
mm	[IA64] Simple memory hot-add for ia64.	19 years ago
oprofile	[PATCH] remove gcc-2 checks	19 years ago
pci	[IA64] Fix pcibios_setup	19 years ago
scripts	…
sn	[IA64] don't report !sn2 or !summit hardware as an error	19 years ago
Kconfig	Make Kprobes depend on modules	19 years ago
Kconfig.debug	[PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menu	19 years ago
Makefile	[PATCH] remove gcc-2 checks	19 years ago
defconfig	[IA64] refresh default config files	19 years ago
install.sh	…
module.lds	…