Michael Holzheu 4b20545910 numa: fix /proc/<pid>/numa_maps for hugetlbfs on s390 ... commit 5c2ff95e41c9290d16556cd02e35b25d81be8fe0 upstream. When working with hugetlbfs ptes (which are actually pmds) is not valid to directly use pte functions like pte_present() because the hardware bit layout of pmds and ptes can be different. This is the case on s390. Therefore we have to convert the hugetlbfs ptes first into a valid pte encoding with huge_ptep_get(). Currently the /proc/<pid>/numa_maps code uses hugetlbfs ptes without huge_ptep_get(). On s390 this leads to the following two problems: 1) The pte_present() function returns false (instead of true) for PROT_NONE hugetlb ptes. Therefore PROT_NONE vmas are missing completely in the "numa_maps" output. 2) The pte_dirty() function always returns false for all hugetlb ptes. Therefore these pages are reported as "mapped=xxx" instead of "dirty=xxx". Therefore use huge_ptep_get() to correctly convert the hugetlb ptes. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2016-02-25 12:01:22 -08:00
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array.c	ptrace: use fsuid, fsgid, effective creds for fs access checks	2016-02-25 12:01:16 -08:00
base.c	ptrace: use fsuid, fsgid, effective creds for fs access checks	2016-02-25 12:01:16 -08:00
cmdline.c
consoles.c
cpuinfo.c
devices.c
fd.c	proc: actually make proc_fd_permission() thread-friendly	2015-11-06 17:50:42 -08:00
fd.h
generic.c	proc: change proc_subdir_lock to a rwlock	2015-09-10 13:29:01 -07:00
inode.c
internal.h
interrupts.c
Kconfig
kcore.c
kmsg.c
loadavg.c
Makefile
meminfo.c	mm: get rid of 'vmalloc_info' from /proc/meminfo	2015-11-01 17:09:15 -08:00
namespaces.c	ptrace: use fsuid, fsgid, effective creds for fs access checks	2016-02-25 12:01:16 -08:00
nommu.c
page.c	proc: add cond_resched to /proc/kpage* read/write loop	2015-09-10 13:29:01 -07:00
proc_net.c
proc_sysctl.c	fs: Drop unlikely before IS_ERR(_OR_NULL)	2015-09-29 15:13:58 +02:00
proc_tty.c
root.c
self.c
softirqs.c
stat.c
task_mmu.c	numa: fix /proc/<pid>/numa_maps for hugetlbfs on s390	2016-02-25 12:01:22 -08:00
task_nommu.c
thread_self.c
uptime.c
version.c
vmcore.c