TononixOS/ubports_kernel_google_msm
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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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11
arch/ia64/kernel/perfmon.c
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@@ -605,9 +605,9 @@ pfm_unprotect_ctx_ctxsw(pfm_context_t *x, unsigned long f)
}
static inline unsigned int
pfm_do_munmap(struct mm_struct *mm, unsigned long addr, size_t len, int acct)
pfm_vm_munmap(struct mm_struct *mm, unsigned long addr, size_t len)
{
return do_munmap(mm, addr, len);
return vm_munmap(mm, addr, len);
}
static inline unsigned long
@@ -1473,13 +1473,8 @@ pfm_remove_smpl_mapping(struct task_struct *task, void *vaddr, unsigned long siz
/*
* does the actual unmapping
*/
down_write(&task->mm->mmap_sem);
r = pfm_vm_munmap(task->mm, (unsigned long)vaddr, size);
DPRINT(("down_write done smpl_vaddr=%p size=%lu\n", vaddr, size));
r = pfm_do_munmap(task->mm, (unsigned long)vaddr, size, 0);
up_write(&task->mm->mmap_sem);
if (r !=0) {
printk(KERN_ERR "perfmon: [%d] unable to unmap sampling buffer @%p size=%lu\n", task_pid_nr(task), vaddr, size);
}