summaryrefslogtreecommitdiff
path: root/mm/truncate.c
diff options
context:
space:
mode:
authorTakashi Iwai <tiwai@suse.de>2010-02-17 16:24:46 +0300
committerTakashi Iwai <tiwai@suse.de>2010-02-17 16:24:46 +0300
commit7fb3a069bc5d3577409c2ae89f89cd264ff85816 (patch)
tree7fe3ba3b95faeecb01e4feafb9288ef4b523c6b3 /mm/truncate.c
parent291186e049d7f8178ad31d43c38a53889f25d79e (diff)
parent9d3415a8cc76ff65c6602a121ac318432c5cd7ba (diff)
downloadlinux-7fb3a069bc5d3577409c2ae89f89cd264ff85816.tar.xz
Merge branch 'fix/misc' into topic/misc
Conflicts: sound/pci/hda/patch_realtek.c
Diffstat (limited to 'mm/truncate.c')
-rw-r--r--mm/truncate.c30
1 files changed, 14 insertions, 16 deletions
diff --git a/mm/truncate.c b/mm/truncate.c
index 342deee22684..e87e37244829 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -522,22 +522,20 @@ EXPORT_SYMBOL_GPL(invalidate_inode_pages2);
*/
void truncate_pagecache(struct inode *inode, loff_t old, loff_t new)
{
- if (new < old) {
- struct address_space *mapping = inode->i_mapping;
-
- /*
- * unmap_mapping_range is called twice, first simply for
- * efficiency so that truncate_inode_pages does fewer
- * single-page unmaps. However after this first call, and
- * before truncate_inode_pages finishes, it is possible for
- * private pages to be COWed, which remain after
- * truncate_inode_pages finishes, hence the second
- * unmap_mapping_range call must be made for correctness.
- */
- unmap_mapping_range(mapping, new + PAGE_SIZE - 1, 0, 1);
- truncate_inode_pages(mapping, new);
- unmap_mapping_range(mapping, new + PAGE_SIZE - 1, 0, 1);
- }
+ struct address_space *mapping = inode->i_mapping;
+
+ /*
+ * unmap_mapping_range is called twice, first simply for
+ * efficiency so that truncate_inode_pages does fewer
+ * single-page unmaps. However after this first call, and
+ * before truncate_inode_pages finishes, it is possible for
+ * private pages to be COWed, which remain after
+ * truncate_inode_pages finishes, hence the second
+ * unmap_mapping_range call must be made for correctness.
+ */
+ unmap_mapping_range(mapping, new + PAGE_SIZE - 1, 0, 1);
+ truncate_inode_pages(mapping, new);
+ unmap_mapping_range(mapping, new + PAGE_SIZE - 1, 0, 1);
}
EXPORT_SYMBOL(truncate_pagecache);