summaryrefslogtreecommitdiff
path: root/fs/stack.c
diff options
context:
space:
mode:
authorHugh Dickins <hughd@google.com>2011-08-03 16:21:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-08-03 14:25:24 -1000
commit31475dd611209413bace21651a400afb91d0bd9d (patch)
tree679c1cb33e211a4f2e5c0f47bb836393c9454d35 /fs/stack.c
parent69f07ec938712b58755add82dd3d0b35f01317cc (diff)
downloadlinux-sh-31475dd611209413bace21651a400afb91d0bd9d.tar.gz
mm: a few small updates for radix-swap
Remove PageSwapBacked (!page_is_file_cache) cases from add_to_page_cache_locked() and add_to_page_cache_lru(): those pages now go through shmem_add_to_page_cache(). Remove a comment on maximum tmpfs size from fsstack_copy_inode_size(), and add a comment on swap entries to invalidate_mapping_pages(). And mincore_page() uses find_get_page() on what might be shmem or a tmpfs file: allow for a radix_tree_exceptional_entry(), and proceed to find_get_page() on swapper_space if so (oh, swapper_space needs #ifdef). Signed-off-by: Hugh Dickins <hughd@google.com> Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/stack.c')
-rw-r--r--fs/stack.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/fs/stack.c b/fs/stack.c
index 4a6f7f440658..b4f2ab48a61f 100644
--- a/fs/stack.c
+++ b/fs/stack.c
@@ -29,10 +29,7 @@ void fsstack_copy_inode_size(struct inode *dst, struct inode *src)
*
* We don't actually know what locking is used at the lower level;
* but if it's a filesystem that supports quotas, it will be using
- * i_lock as in inode_add_bytes(). tmpfs uses other locking, and
- * its 32-bit is (just) able to exceed 2TB i_size with the aid of
- * holes; but its i_blocks cannot carry into the upper long without
- * almost 2TB swap - let's ignore that case.
+ * i_lock as in inode_add_bytes().
*/
if (sizeof(i_blocks) > sizeof(long))
spin_lock(&src->i_lock);