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| author | David Howells <dhowells@redhat.com> | 2009-04-03 16:42:36 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2009-04-03 16:42:36 +0100 |
| commit | 266cf658efcf6ac33541a46740f74f50c79d2b6b (patch) | |
| tree | 5c83b0879892d509e598dfd54be3ba3679ecd348 /mm/swap.c | |
| parent | 03fb3d2af96c2783c3a5bc03f3d984cf422f0e69 (diff) | |
| download | linux-3.10-266cf658efcf6ac33541a46740f74f50c79d2b6b.tar.gz linux-3.10-266cf658efcf6ac33541a46740f74f50c79d2b6b.tar.bz2 linux-3.10-266cf658efcf6ac33541a46740f74f50c79d2b6b.zip | |
FS-Cache: Recruit a page flags for cache management
Recruit a page flag to aid in cache management. The following extra flag is
defined:
(1) PG_fscache (PG_private_2)
The marked page is backed by a local cache and is pinning resources in the
cache driver.
If PG_fscache is set, then things that checked for PG_private will now also
check for that. This includes things like truncation and page invalidation.
The function page_has_private() had been added to make the checks for both
PG_private and PG_private_2 at the same time.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Steve Dickson <steved@redhat.com>
Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Tested-by: Daire Byrne <Daire.Byrne@framestore.com>
Diffstat (limited to 'mm/swap.c')
| -rw-r--r-- | mm/swap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/swap.c b/mm/swap.c index 6e83084c1f6..bede23ce64e 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -448,8 +448,8 @@ void pagevec_strip(struct pagevec *pvec) for (i = 0; i < pagevec_count(pvec); i++) { struct page *page = pvec->pages[i]; - if (PagePrivate(page) && trylock_page(page)) { - if (PagePrivate(page)) + if (page_has_private(page) && trylock_page(page)) { + if (page_has_private(page)) try_to_release_page(page, 0); unlock_page(page); } |