Brice Goglin 80bba1290a mm: no get_user/put_user while holding mmap_sem in do_pages_stat? ...

Since commit 2f007e74bb85b9fc4eab28524052161703300f1a, do_pages_stat()
gets the page address from user-space and puts the corresponding status
back while holding the mmap_sem for read.  There is no need to hold
mmap_sem there while some page-faults may occur.

This patch adds a temporary address and status buffer so as to only
hold mmap_sem while working on these kernel buffers.  This is
implemented by extracting do_pages_stat_array() out of do_pages_stat().

Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2008-12-10 08:01:53 -08:00

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allocpercpu.c

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backing-dev.c

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bootmem.c

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bounce.c

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dmapool.c

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fadvise.c

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filemap_xip.c

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filemap.c

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fremap.c

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highmem.c

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hugetlb.c

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internal.h

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Kconfig

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maccess.c

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madvise.c

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Makefile

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memcontrol.c

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memory_hotplug.c

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memory.c

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mempolicy.c

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mempool.c

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migrate.c

mm: no get_user/put_user while holding mmap_sem in do_pages_stat?

2008-12-10 08:01:53 -08:00

mincore.c

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mlock.c

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mm_init.c

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mmap.c

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mmu_notifier.c

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mmzone.c

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mprotect.c

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mremap.c

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msync.c

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nommu.c

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oom_kill.c

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page_alloc.c

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page_cgroup.c

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page_io.c

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page_isolation.c

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page-writeback.c

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pagewalk.c

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pdflush.c

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prio_tree.c

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quicklist.c

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readahead.c

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rmap.c

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shmem_acl.c

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shmem.c

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slab.c

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slob.c

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slub.c

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sparse-vmemmap.c

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sparse.c

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swap_state.c

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swap.c

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swapfile.c

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thrash.c

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tiny-shmem.c

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truncate.c

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util.c

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vmalloc.c

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vmscan.c

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vmstat.c

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