---

yaml --- r: 179362 b: refs/heads/master c: 81759b5 h: refs/heads/master v: v3
git-mirror · Jan 16, 2010 · 14bc544 · 14bc544
1 parent c8fbe2c
commit 14bc544
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Showing 2 changed files with 7 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: efc1a3b16930c41d64ffefde16b87d82f603a8a0
+refs/heads/master: 81759b5b221107488bda99fe7beeb7b734f61133
diff --git a/trunk/fs/ramfs/file-nommu.c b/trunk/fs/ramfs/file-nommu.c
@@ -131,17 +131,22 @@ static int ramfs_nommu_check_mappings(struct inode *inode,
 	struct vm_area_struct *vma;
 	struct prio_tree_iter iter;
 
+	down_write(&nommu_region_sem);
+
 	/* search for VMAs that fall within the dead zone */
 	vma_prio_tree_foreach(vma, &iter, &inode->i_mapping->i_mmap,
 			      newsize >> PAGE_SHIFT,
 			      (size + PAGE_SIZE - 1) >> PAGE_SHIFT
 			      ) {
 		/* found one - only interested if it's shared out of the page
 		 * cache */
-		if (vma->vm_flags & VM_SHARED)
+		if (vma->vm_flags & VM_SHARED) {
+			up_write(&nommu_region_sem);
 			return -ETXTBSY; /* not quite true, but near enough */
+		}
 	}
 
+	up_write(&nommu_region_sem);
 	return 0;
 }