diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-26 10:50:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-26 10:50:56 -0700 |
| commit | f8d613e2a665bf1be9628a3c3f9bafe7599b32c0 (patch) | |
| tree | 98d4da8d0e1a5fb1d9064626b4b96d95ccf26375 /mm/filemap.c | |
| parent | 8a0599dd2471f2a2e409498c08a0ab339057ad06 (diff) | |
| parent | 5bc20fc59706214d9591c11e1938a629d3538c12 (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/djm/tmem
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/djm/tmem:
xen: cleancache shim to Xen Transcendent Memory
ocfs2: add cleancache support
ext4: add cleancache support
btrfs: add cleancache support
ext3: add cleancache support
mm/fs: add hooks to support cleancache
mm: cleancache core ops functions and config
fs: add field to superblock to support cleancache
mm/fs: cleancache documentation
Fix up trivial conflict in fs/btrfs/extent_io.c due to includes
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 68e782b3d3de..7455ccd8bda8 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -34,6 +34,7 @@ #include <linux/hardirq.h> /* for BUG_ON(!in_atomic()) only */ #include <linux/memcontrol.h> #include <linux/mm_inline.h> /* for page_is_file_cache() */ +#include <linux/cleancache.h> #include "internal.h" /* @@ -118,6 +119,16 @@ void __delete_from_page_cache(struct page *page) { struct address_space *mapping = page->mapping; + /* + * if we're uptodate, flush out into the cleancache, otherwise + * invalidate any existing cleancache entries. We can't leave + * stale data around in the cleancache once our page is gone + */ + if (PageUptodate(page) && PageMappedToDisk(page)) + cleancache_put_page(page); + else + cleancache_flush_page(mapping, page); + radix_tree_delete(&mapping->page_tree, page->index); page->mapping = NULL; mapping->nrpages--; |