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| author | Arnd Bergmann <arnd@arndb.de> | 2012-02-28 12:33:41 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-02-28 12:33:46 +0000 |
| commit | abf45ce84c4e36bd64aef20d7df9a79bd5e4b799 (patch) | |
| tree | f118e135bdd60b680703d1b38c7fdc7b9d7c503d /mm/nommu.c | |
| parent | 082f53c2f573c75a8f1610c587a43b6817e20f90 (diff) | |
| parent | b1f91a9ce335eb4e0fef17c10f39a438ac3fce9b (diff) | |
Merge branch 'imx/defconfig' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/soc
* 'imx/defconfig' of git://git.linaro.org/people/shawnguo/linux-2.6: (2 commits)
ARM: defconfig: imx_v6_v7: build in REGULATOR_FIXED_VOLTAGE
ARM: imx: update imx_v6_v7_defconfig
(upadte to v3.3-rc5)
Diffstat (limited to 'mm/nommu.c')
| -rw-r--r-- | mm/nommu.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index b982290fd96..f59e170fceb 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -696,9 +696,11 @@ static void add_vma_to_mm(struct mm_struct *mm, struct vm_area_struct *vma) if (vma->vm_file) { mapping = vma->vm_file->f_mapping; + mutex_lock(&mapping->i_mmap_mutex); flush_dcache_mmap_lock(mapping); vma_prio_tree_insert(vma, &mapping->i_mmap); flush_dcache_mmap_unlock(mapping); + mutex_unlock(&mapping->i_mmap_mutex); } /* add the VMA to the tree */ @@ -760,9 +762,11 @@ static void delete_vma_from_mm(struct vm_area_struct *vma) if (vma->vm_file) { mapping = vma->vm_file->f_mapping; + mutex_lock(&mapping->i_mmap_mutex); flush_dcache_mmap_lock(mapping); vma_prio_tree_remove(vma, &mapping->i_mmap); flush_dcache_mmap_unlock(mapping); + mutex_unlock(&mapping->i_mmap_mutex); } /* remove from the MM's tree and list */ @@ -775,8 +779,6 @@ static void delete_vma_from_mm(struct vm_area_struct *vma) if (vma->vm_next) vma->vm_next->vm_prev = vma->vm_prev; - - vma->vm_mm = NULL; } /* @@ -2052,6 +2054,7 @@ int nommu_shrink_inode_mappings(struct inode *inode, size_t size, high = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; down_write(&nommu_region_sem); + mutex_lock(&inode->i_mapping->i_mmap_mutex); /* search for VMAs that fall within the dead zone */ vma_prio_tree_foreach(vma, &iter, &inode->i_mapping->i_mmap, @@ -2059,6 +2062,7 @@ int nommu_shrink_inode_mappings(struct inode *inode, size_t size, /* found one - only interested if it's shared out of the page * cache */ if (vma->vm_flags & VM_SHARED) { + mutex_unlock(&inode->i_mapping->i_mmap_mutex); up_write(&nommu_region_sem); return -ETXTBSY; /* not quite true, but near enough */ } @@ -2086,6 +2090,7 @@ int nommu_shrink_inode_mappings(struct inode *inode, size_t size, } } + mutex_unlock(&inode->i_mapping->i_mmap_mutex); up_write(&nommu_region_sem); return 0; } |