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VM: add "vm_munmap()" helper function

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Like the vm_brk() function, this is the same as "do_munmap()", except it
does the VM locking for the caller.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds
2012-04-20 16:20:01 -07:00
parent e4eb1ff61b
commit a46ef99d80
8 changed files with 28 additions and 36 deletions
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7
fs/aio.c
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@@ -92,11 +92,8 @@ static void aio_free_ring(struct kioctx *ctx)
for (i=0; i<info->nr_pages; i++)
put_page(info->ring_pages[i]);
if (info->mmap_size) {
down_write(&ctx->mm->mmap_sem);
do_munmap(ctx->mm, info->mmap_base, info->mmap_size);
up_write(&ctx->mm->mmap_sem);
}
if (info->mmap_size)
vm_munmap(ctx->mm, info->mmap_base, info->mmap_size);
if (info->ring_pages && info->ring_pages != info->internal_pages)
kfree(info->ring_pages);