Oleg Nesterov b8c20a9b85 fs/proc/task_mmu.c: reintroduce m->version logic ...

Add the "last_addr" optimization back. Like before, every ->show()
method checks !seq_overflow() and sets m->version = vma->vm_start.

However, it also checks that m_next_vma(vma) != NULL, otherwise it
sets m->version = -1 for the lockless "EOF" fast-path in m_start().

m_start() can simply do find_vma() + m_next_vma() if last_addr is
not zero, the code looks clear and simple and this case is clearly
separated from "scan vmas" path.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2014-10-09 22:25:49 -04:00

..

array.c

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

2014-08-06 08:06:39 -07:00

base.c

proc: introduce proc_mem_open()

2014-10-09 22:25:48 -04:00

cmdline.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

consoles.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

cpuinfo.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

devices.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

fd.c

proc: add and remove /proc entry create checks

2014-08-08 15:57:22 -07:00

fd.h

proc: Move proc_fd() to fs/proc/fd.h

2013-05-01 17:29:39 -04:00

generic.c

proc: make proc_subdir_lock static

2014-08-08 15:57:22 -07:00

inode.c

proc: Implement /proc/thread-self to point at the directory of the current thread

2014-08-04 10:07:11 -07:00

internal.h

fs/proc/task_mmu.c: shift mm_access() from m_start() to proc_maps_open()

2014-10-09 22:25:48 -04:00

interrupts.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

Kconfig

kcore: add Kconfig help text

2013-11-13 12:09:33 +09:00

kcore.c

fs/proc/kcore.c: use PAGE_ALIGN instead of ALIGN(PAGE_SIZE)

2014-08-08 15:57:22 -07:00

kmsg.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

loadavg.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

Makefile

proc: Implement /proc/thread-self to point at the directory of the current thread

2014-08-04 10:07:11 -07:00

meminfo.c

mm: export NR_SHMEM via sysinfo(2) / si_meminfo() interfaces

2014-08-06 18:01:19 -07:00

namespaces.c

new helper: readlink_copy()

2014-04-01 23:19:15 -04:00

nommu.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

page.c

mm: close PageTail race

2014-03-04 07:55:47 -08:00

proc_net.c

Revert "proc: Point /proc/{mounts,net} at /proc/thread-self/{mounts,net} instead of /proc/self/{mounts,net}"

2014-08-10 21:24:59 -07:00

proc_sysctl.c

sysctl: remove typedef ctl_table

2014-08-08 15:57:24 -07:00

proc_tty.c

proc: remove proc_tty_ldisc variable

2014-08-08 15:57:22 -07:00

root.c

Revert "proc: Point /proc/{mounts,net} at /proc/thread-self/{mounts,net} instead of /proc/self/{mounts,net}"

2014-08-10 21:24:59 -07:00

self.c

new helper: readlink_copy()

2014-04-01 23:19:15 -04:00

softirqs.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

stat.c

/proc/stat: convert to single_open_size()

2014-07-03 09:21:54 -07:00

task_mmu.c

fs/proc/task_mmu.c: reintroduce m->version logic

2014-10-09 22:25:49 -04:00

task_nommu.c

seq_file: remove "%n" usage from seq_file users

2013-11-15 09:32:20 +09:00

thread_self.c

proc: Implement /proc/thread-self to point at the directory of the current thread

2014-08-04 10:07:11 -07:00

uptime.c

cputime: Default implementation of nsecs -> cputime conversion

2014-03-13 15:56:43 +01:00

version.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

vmcore.c

fs/proc/vmcore.c:mmap_vmcore: skip non-ram pages reported by hypervisors

2014-08-08 15:57:23 -07:00