Christoph Lameter bc3e53f682 mm: distinguish between mlocked and pinned pages ... Some kernel components pin user space memory (infiniband and perf) (by increasing the page count) and account that memory as "mlocked". The difference between mlocking and pinning is: A. mlocked pages are marked with PG_mlocked and are exempt from swapping. Page migration may move them around though. They are kept on a special LRU list. B. Pinned pages cannot be moved because something needs to directly access physical memory. They may not be on any LRU list. I recently saw an mlockalled process where mm->locked_vm became bigger than the virtual size of the process (!) because some memory was accounted for twice: Once when the page was mlocked and once when the Infiniband layer increased the refcount because it needt to pin the RDMA memory. This patch introduces a separate counter for pinned pages and accounts them seperately. Signed-off-by: Christoph Lameter <cl@linux.com> Cc: Mike Marciniszyn <infinipath@qlogic.com> Cc: Roland Dreier <roland@kernel.org> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2011-10-31 17:30:46 -07:00
..
array.c	ptrace: s/tracehook_tracer_task()/ptrace_parent()/	2011-06-22 19:26:29 +02:00
base.c	oom: remove oom_disable_count	2011-10-31 17:30:45 -07:00
cmdline.c
consoles.c	console: rename acquire/release_console_sem() to console_lock/unlock()	2011-01-26 10:50:06 +10:00
cpuinfo.c
devices.c	proc: use seq_puts()/seq_putc() where possible	2011-01-13 08:03:16 -08:00
generic.c	proc: make struct proc_dir_entry::name a terminal array rather than a pointer	2011-07-27 12:50:45 -07:00
inode.c	procfs: return ENOENT on opening a being-removed proc entry	2011-07-26 16:49:43 -07:00
internal.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/linux-2.6-nsfd	2011-05-25 18:10:16 -07:00
interrupts.c
Kconfig	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
kcore.c	/proc/kcore: fix seeking	2011-01-13 08:03:17 -08:00
kmsg.c
loadavg.c
Makefile	ns: proc files for namespace naming policy.	2011-05-10 14:31:44 -07:00
meminfo.c	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
mmu.c
namespaces.c	proc: Fix Oops on stat of /proc/<zombie pid>/ns/net	2011-06-15 14:35:29 -07:00
nommu.c
page.c	thp: remove PG_buddy	2011-01-13 17:32:43 -08:00
proc_devtree.c	of/flattree: Drop an uninteresting message to pr_debug level	2011-03-02 13:45:18 -07:00
proc_net.c	proc: make struct proc_dir_entry::name a terminal array rather than a pointer	2011-07-27 12:50:45 -07:00
proc_sysctl.c	->permission() sanitizing: don't pass flags to ->permission()	2011-07-20 01:43:24 -04:00
proc_tty.c	proc: use seq_puts()/seq_putc() where possible	2011-01-13 08:03:16 -08:00
root.c	proc: make struct proc_dir_entry::name a terminal array rather than a pointer	2011-07-27 12:50:45 -07:00
softirqs.c	proc: use seq_puts()/seq_putc() where possible	2011-01-13 08:03:16 -08:00
stat.c	proc: Consider NO_HZ when printing idle and iowait times	2011-09-08 11:10:55 +02:00
task_mmu.c	mm: distinguish between mlocked and pinned pages	2011-10-31 17:30:46 -07:00
task_nommu.c	report errors in /proc/*/*map* sanely	2011-03-23 16:36:50 -04:00
uptime.c
version.c
vmcore.c	fs/proc/vmcore.c: add hook to read_from_oldmem() to check for non-ram pages	2011-05-26 17:12:37 -07:00