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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-12 08:40:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-12 08:40:19 -0700 |
| commit | 1c89ac55017f982355c7761e1c912c88c941483d (patch) | |
| tree | 6878e95a0572defc725ea58f5a1449db937a5066 /mm | |
| parent | 88fa08f67bee1a0c765237bdac106a32872f57d2 (diff) | |
| parent | b1b135c8d619cb2c7045d6ee4e48375882518bb5 (diff) | |
| download | linux-3.10-1c89ac55017f982355c7761e1c912c88c941483d.tar.gz linux-3.10-1c89ac55017f982355c7761e1c912c88c941483d.tar.bz2 linux-3.10-1c89ac55017f982355c7761e1c912c88c941483d.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
fix spinlock recursion in hvc_console
stop_machine: remove unused variable
modules: extend initcall_debug functionality to the module loader
export virtio_rng.h
lguest: use get_user_pages_fast() instead of get_user_pages()
mm: Make generic weak get_user_pages_fast and EXPORT_GPL it
lguest: don't set MAC address for guest unless specified
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/Kconfig | 3 | ||||
| -rw-r--r-- | mm/util.c | 15 |
2 files changed, 15 insertions, 3 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 446c6588c75..0bd9c2dbb2a 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -77,9 +77,6 @@ config FLAT_NODE_MEM_MAP def_bool y depends on !SPARSEMEM -config HAVE_GET_USER_PAGES_FAST - bool - # # Both the NUMA code and DISCONTIGMEM use arrays of pg_data_t's # to represent different areas of memory. This variable allows diff --git a/mm/util.c b/mm/util.c index 9341ca77bd8..cb00b748ce4 100644 --- a/mm/util.c +++ b/mm/util.c @@ -171,3 +171,18 @@ void arch_pick_mmap_layout(struct mm_struct *mm) mm->unmap_area = arch_unmap_area; } #endif + +int __attribute__((weak)) get_user_pages_fast(unsigned long start, + int nr_pages, int write, struct page **pages) +{ + struct mm_struct *mm = current->mm; + int ret; + + down_read(&mm->mmap_sem); + ret = get_user_pages(current, mm, start, nr_pages, + write, 0, pages, NULL); + up_read(&mm->mmap_sem); + + return ret; +} +EXPORT_SYMBOL_GPL(get_user_pages_fast); |