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authorHugh Dickins <hughd@google.com>2014-08-06 16:06:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-06 18:01:19 -0700
commiteb39d618f9e80f81cfc5788cf1b252d141c2f0c3 (patch)
tree96ae0e0408c4f27125904fe81c1f21b13df0dc76 /mm
parentc2ea2181db43ced2e5945b9596bb3bb9935ce92e (diff)
downloadlinux-eb39d618f9e80f81cfc5788cf1b252d141c2f0c3.tar.gz
mm: replace init_page_accessed by __SetPageReferenced
Do we really need an exported alias for __SetPageReferenced()? Its callers better know what they're doing, in which case the page would not be already marked referenced. Kill init_page_accessed(), just __SetPageReferenced() inline. Signed-off-by: Hugh Dickins <hughd@google.com> Acked-by: Mel Gorman <mgorman@suse.de> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Michal Hocko <mhocko@suse.cz> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Prabhakar Lad <prabhakar.csengg@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/filemap.c4
-rw-r--r--mm/shmem.c2
-rw-r--r--mm/swap.c14
3 files changed, 6 insertions, 14 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 65d44fd88c78..7e85c8147e1b 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1091,9 +1091,9 @@ no_page:
if (WARN_ON_ONCE(!(fgp_flags & FGP_LOCK)))
fgp_flags |= FGP_LOCK;
- /* Init accessed so avoit atomic mark_page_accessed later */
+ /* Init accessed so avoid atomic mark_page_accessed later */
if (fgp_flags & FGP_ACCESSED)
- init_page_accessed(page);
+ __SetPageReferenced(page);
err = add_to_page_cache_lru(page, mapping, offset, radix_gfp_mask);
if (unlikely(err)) {
diff --git a/mm/shmem.c b/mm/shmem.c
index 57fd82a5af7a..fe15d96c3166 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1166,7 +1166,7 @@ repeat:
__SetPageSwapBacked(page);
__set_page_locked(page);
if (sgp == SGP_WRITE)
- init_page_accessed(page);
+ __SetPageReferenced(page);
error = mem_cgroup_charge_file(page, current->mm,
gfp & GFP_RECLAIM_MASK);
diff --git a/mm/swap.c b/mm/swap.c
index 9e8e3472248b..d8eb4d09ffa2 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -589,6 +589,9 @@ static void __lru_cache_activate_page(struct page *page)
* inactive,unreferenced -> inactive,referenced
* inactive,referenced -> active,unreferenced
* active,unreferenced -> active,referenced
+ *
+ * When a newly allocated page is not yet visible, so safe for non-atomic ops,
+ * __SetPageReferenced(page) may be substituted for mark_page_accessed(page).
*/
void mark_page_accessed(struct page *page)
{
@@ -614,17 +617,6 @@ void mark_page_accessed(struct page *page)
}
EXPORT_SYMBOL(mark_page_accessed);
-/*
- * Used to mark_page_accessed(page) that is not visible yet and when it is
- * still safe to use non-atomic ops
- */
-void init_page_accessed(struct page *page)
-{
- if (!PageReferenced(page))
- __SetPageReferenced(page);
-}
-EXPORT_SYMBOL(init_page_accessed);
-
static void __lru_cache_add(struct page *page)
{
struct pagevec *pvec = &get_cpu_var(lru_add_pvec);