fs: cachefiles: add support for large files in filesystem caching (Closes: #698376)

svn path=/dists/sid/linux/; revision=19747

debian/changelog

@@ -69,6 +69,8 @@ linux (3.2.36-1) UNRELEASED; urgency=low
   * vt6656: Fix inconsistent structure packing which leads to crash on amd64
   * [!powerpc] radeon: Reenable DRM_RADEON_KMS, as it apparently works on
     most non-PowerMac systems
+  * fs: cachefiles: add support for large files in filesystem caching
+    (Closes: #698376)
 
   [ Aurelien Jarno ]
   * [armhf/vexpress] Add kernel udebs.

debian/patches/bugfix/all/fs-cachefiles-add-support-for-large-files-in-filesys.patch

@@ -0,0 +1,31 @@
+From: Justin Lecher <jlec@gentoo.org>
+Date: Mon, 30 Jul 2012 14:42:53 -0700
+Subject: fs: cachefiles: add support for large files in filesystem caching
+
+commit 98c350cda2c14a343d34ea01a3d9c24fea5ec66d upstream.
+
+Support the caching of large files.
+
+Addresses https://bugzilla.kernel.org/show_bug.cgi?id=31182
+
+Signed-off-by: Justin Lecher <jlec@gentoo.org>
+Signed-off-by: Suresh Jayaraman <sjayaraman@suse.com>
+Tested-by: Suresh Jayaraman <sjayaraman@suse.com>
+Acked-by: David Howells <dhowells@redhat.com>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+[bwh: Backported to 3.2: 
+ - Adjust context
+ - dentry_open() takes dentry and vfsmount pointers, not a path pointer]
+---
+--- a/fs/cachefiles/rdwr.c
++++ b/fs/cachefiles/rdwr.c
+@@ -918,7 +918,7 @@ int cachefiles_write_page(struct fscache_storage *op, struct page *page)
+ 	 * own time */
+ 	dget(object->backer);
+ 	mntget(cache->mnt);
+-	file = dentry_open(object->backer, cache->mnt, O_RDWR,
++	file = dentry_open(object->backer, cache->mnt, O_RDWR | O_LARGEFILE,
+ 			   cache->cache_cred);
+ 	if (IS_ERR(file)) {
+ 		ret = PTR_ERR(file);

debian/patches/series

@@ -464,3 +464,4 @@ features/all/iguanair/0010-media-iguanair-do-not-modify-transmit-buffer.patch
 features/all/iguanair/0011-media-iguanair-cannot-send-data-from-the-stack.patch
 features/all/rt2800-add-chipset-revision-RT5390R-support.patch
 bugfix/all/vt6656-Fix-inconsistent-structure-packing.patch
+bugfix/all/fs-cachefiles-add-support-for-large-files-in-filesys.patch