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KOSAKI Motohiro 1c2499ae87 /proc/pid/smaps: fix dirty pages accounting ... Currently, /proc/<pid>/smaps has wrong dirty pages accounting. Shared_Dirty and Private_Dirty output only pte dirty pages and ignore PG_dirty page flag. It is difference against documentation, but also inconsistent against Referenced field. (Referenced checks both pte and page flags) This patch fixes it. Test program: large-array.c --------------------------------------------------- #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> char array[1*1024*1024*1024L]; int main(void) { memset(array, 1, sizeof(array)); pause(); return 0; } --------------------------------------------------- Test case: 1. run ./large-array 2. cat /proc/`pidof large-array`/smaps 3. swapoff -a 4. cat /proc/`pidof large-array`/smaps again Test result: <before patch> 00601000-40601000 rw-p 00000000 00:00 0 Size: 1048576 kB Rss: 1048576 kB Pss: 1048576 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 218992 kB <-- showed pages as clean incorrectly Private_Dirty: 829584 kB Referenced: 388364 kB Swap: 0 kB KernelPageSize: 4 kB MMUPageSize: 4 kB <after patch> 00601000-40601000 rw-p 00000000 00:00 0 Size: 1048576 kB Rss: 1048576 kB Pss: 1048576 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 1048576 kB <-- fixed Referenced: 388480 kB Swap: 0 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Hugh Dickins <hughd@google.com> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		15 years ago
..
Kconfig	proc: move PROC_PAGE_MONITOR to fs/proc/Kconfig	17 years ago
Makefile	procfs: simplify conditional processing of fs/proc.o.	15 years ago
array.c	CRED: Fix get_task_cred() and task_state() to not resurrect dead credentials	15 years ago
base.c	vfs: show unreachable paths in getcwd and proc	15 years ago
cmdline.c	proc: switch /proc/cmdline to seq_file	17 years ago
cpuinfo.c	proc: move /proc/cpuinfo code to fs/proc/cpuinfo.c	17 years ago
devices.c	proc: move /proc/devices code to fs/proc/devices.c	17 years ago
generic.c	remove inode_setattr	15 years ago
inode.c	bkl: Remove locked .ioctl file operation	15 years ago
internal.h	proc: rename de_get() to pde_get() and inline it	15 years ago
interrupts.c	proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.c	17 years ago
kcore.c	kcore: add _text to KCORE_TEXT	15 years ago
kmsg.c	procfs: Use generic_file_llseek in /proc/kmsg	15 years ago
loadavg.c	sched, timers: cleanup avenrun users	16 years ago
meminfo.c	hwpoison: fix/proc/meminfo alignment	16 years ago
mmu.c	fs/proc/mmu.c: headers butchery	18 years ago
nommu.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
page.c	proc: export uncached bit properly in /proc/kpageflags	15 years ago
proc_devtree.c	of: Drop properties with "/" in their name	15 years ago
proc_net.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
proc_sysctl.c	remove inode_setattr	15 years ago
proc_tty.c	proc tty: remove struct tty_operations::read_proc	16 years ago
root.c	proc: cleanup: remove unused assignments	15 years ago
softirqs.c	proc: export statistics for softirq to /proc	16 years ago
stat.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
task_mmu.c	/proc/pid/smaps: fix dirty pages accounting	15 years ago
task_nommu.c	nommu: add '[stack]' label to /proc/pid/maps output	15 years ago
uptime.c	[PATCH] Fix idle time field in /proc/uptime	16 years ago
version.c	proc: switch /proc/version to seq_file	17 years ago
vmcore.c	/proc/vmcore: fix seeking	15 years ago