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mm: Convert i_mmap_lock to a mutex

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Straightforward conversion of i_mmap_lock to a mutex.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Miller <davem@davemloft.net>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Tony Luck <tony.luck@intel.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Peter Zijlstra
2011-05-24 17:12:06 -07:00
committed by Linus Torvalds
parent 97a894136f
commit 3d48ae45e7
17 changed files with 58 additions and 58 deletions
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22
mm/mmap.c
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@ -194,7 +194,7 @@ error:
}
/*
* Requires inode->i_mapping->i_mmap_lock
* Requires inode->i_mapping->i_mmap_mutex
*/
static void __remove_shared_vm_struct(struct vm_area_struct *vma,
struct file *file, struct address_space *mapping)
@ -222,9 +222,9 @@ void unlink_file_vma(struct vm_area_struct *vma)
if (file) {
struct address_space *mapping = file->f_mapping;
spin_lock(&mapping->i_mmap_lock);
mutex_lock(&mapping->i_mmap_mutex);
__remove_shared_vm_struct(vma, file, mapping);
spin_unlock(&mapping->i_mmap_lock);
mutex_unlock(&mapping->i_mmap_mutex);
}
}
@ -446,13 +446,13 @@ static void vma_link(struct mm_struct *mm, struct vm_area_struct *vma,
mapping = vma->vm_file->f_mapping;
if (mapping)
spin_lock(&mapping->i_mmap_lock);
mutex_lock(&mapping->i_mmap_mutex);
__vma_link(mm, vma, prev, rb_link, rb_parent);
__vma_link_file(vma);
if (mapping)
spin_unlock(&mapping->i_mmap_lock);
mutex_unlock(&mapping->i_mmap_mutex);
mm->map_count++;
validate_mm(mm);
@ -555,7 +555,7 @@ again: remove_next = 1 + (end > next->vm_end);
mapping = file->f_mapping;
if (!(vma->vm_flags & VM_NONLINEAR))
root = &mapping->i_mmap;
spin_lock(&mapping->i_mmap_lock);
mutex_lock(&mapping->i_mmap_mutex);
if (insert) {
/*
* Put into prio_tree now, so instantiated pages
@ -622,7 +622,7 @@ again: remove_next = 1 + (end > next->vm_end);
if (anon_vma)
anon_vma_unlock(anon_vma);
if (mapping)
spin_unlock(&mapping->i_mmap_lock);
mutex_unlock(&mapping->i_mmap_mutex);
if (remove_next) {
if (file) {
@ -2290,7 +2290,7 @@ void exit_mmap(struct mm_struct *mm)
/* Insert vm structure into process list sorted by address
* and into the inode's i_mmap tree. If vm_file is non-NULL
* then i_mmap_lock is taken here.
* then i_mmap_mutex is taken here.
*/
int insert_vm_struct(struct mm_struct * mm, struct vm_area_struct * vma)
{
@ -2532,7 +2532,7 @@ static void vm_lock_mapping(struct mm_struct *mm, struct address_space *mapping)
*/
if (test_and_set_bit(AS_MM_ALL_LOCKS, &mapping->flags))
BUG();
spin_lock_nest_lock(&mapping->i_mmap_lock, &mm->mmap_sem);
mutex_lock_nest_lock(&mapping->i_mmap_mutex, &mm->mmap_sem);
}
}
@ -2559,7 +2559,7 @@ static void vm_lock_mapping(struct mm_struct *mm, struct address_space *mapping)
* vma in this mm is backed by the same anon_vma or address_space.
*
* We can take all the locks in random order because the VM code
* taking i_mmap_lock or anon_vma->lock outside the mmap_sem never
* taking i_mmap_mutex or anon_vma->lock outside the mmap_sem never
* takes more than one of them in a row. Secondly we're protected
* against a concurrent mm_take_all_locks() by the mm_all_locks_mutex.
*
@ -2631,7 +2631,7 @@ static void vm_unlock_mapping(struct address_space *mapping)
* AS_MM_ALL_LOCKS can't change to 0 from under us
* because we hold the mm_all_locks_mutex.
*/
spin_unlock(&mapping->i_mmap_lock);
mutex_unlock(&mapping->i_mmap_mutex);
if (!test_and_clear_bit(AS_MM_ALL_LOCKS,
&mapping->flags))
BUG();