mm: cleancache: s/flush/invalidate/

Per akpm suggestions alter the use of the term flush to be
invalidate. The next patch will do this across all MM.

This change is completely cosmetic.

[v9: akpm@linux-foundation.org: change "flush" to "invalidate", part 3]

Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Jan Beulich <JBeulich@novell.com>
Reviewed-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Rik Riel <riel@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
[v10: Fixed  fs: move code out of buffer.c conflict change]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

3 files changed, 16 insertions, 15 deletions

diff --git a/mm/cleancache.c b/mm/cleancache.c
index bcaae4c2a770..237c6e0feea0 100644
--- a/mm/cleancache.c
+++ b/mm/cleancache.c
@@ -19,7 +19,7 @@
 
 /*
  * This global enablement flag may be read thousands of times per second
- * by cleancache_get/put/flush even on systems where cleancache_ops
+ * by cleancache_get/put/invalidate even on systems where cleancache_ops
  * is not claimed (e.g. cleancache is config'ed on but remains
  * disabled), so is preferred to the slower alternative: a function
  * call that checks a non-global.
@@ -148,10 +148,11 @@ void __cleancache_put_page(struct page *page)
 EXPORT_SYMBOL(__cleancache_put_page);
 
 /*
- * Flush any data from cleancache associated with the poolid and the
+ * Invalidate any data from cleancache associated with the poolid and the
  * page's inode and page index so that a subsequent "get" will fail.
  */
-void __cleancache_flush_page(struct address_space *mapping, struct page *page)
+void __cleancache_invalidate_page(struct address_space *mapping,
+                                        struct page *page)
 {
         /* careful... page->mapping is NULL sometimes when this is called */
         int pool_id = mapping->host->i_sb->cleancache_poolid;
@@ -165,14 +166,14 @@ void __cleancache_flush_page(struct address_space *mapping, struct page *page)
                 }
         }
 }
-EXPORT_SYMBOL(__cleancache_flush_page);
+EXPORT_SYMBOL(__cleancache_invalidate_page);
 
 /*
- * Flush all data from cleancache associated with the poolid and the
+ * Invalidate all data from cleancache associated with the poolid and the
  * mappings's inode so that all subsequent gets to this poolid/inode
  * will fail.
  */
-void __cleancache_flush_inode(struct address_space *mapping)
+void __cleancache_invalidate_inode(struct address_space *mapping)
 {
         int pool_id = mapping->host->i_sb->cleancache_poolid;
         struct cleancache_filekey key = { .u.key = { 0 } };
@@ -180,14 +181,14 @@ void __cleancache_flush_inode(struct address_space *mapping)
         if (pool_id >= 0 && cleancache_get_key(mapping->host, &key) >= 0)
                 (*cleancache_ops.flush_inode)(pool_id, key);
 }
-EXPORT_SYMBOL(__cleancache_flush_inode);
+EXPORT_SYMBOL(__cleancache_invalidate_inode);
 
 /*
  * Called by any cleancache-enabled filesystem at time of unmount;
  * note that pool_id is surrendered and may be reutrned by a subsequent
  * cleancache_init_fs or cleancache_init_shared_fs
  */
-void __cleancache_flush_fs(struct super_block *sb)
+void __cleancache_invalidate_fs(struct super_block *sb)
 {
         if (sb->cleancache_poolid >= 0) {
                 int old_poolid = sb->cleancache_poolid;
@@ -195,7 +196,7 @@ void __cleancache_flush_fs(struct super_block *sb)
                 (*cleancache_ops.flush_fs)(old_poolid);
         }
 }
-EXPORT_SYMBOL(__cleancache_flush_fs);
+EXPORT_SYMBOL(__cleancache_invalidate_fs);
 
 #ifdef CONFIG_SYSFS
 
diff --git a/mm/filemap.c b/mm/filemap.c
index a0701e6eec10..0aa3faa48219 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -123,7 +123,7 @@ void __delete_from_page_cache(struct page *page)
         if (PageUptodate(page) && PageMappedToDisk(page))
                 cleancache_put_page(page);
         else
-                cleancache_flush_page(mapping, page);
+                cleancache_invalidate_page(mapping, page);
 
         radix_tree_delete(&mapping->page_tree, page->index);
         page->mapping = NULL;
diff --git a/mm/truncate.c b/mm/truncate.c
index 632b15e29f74..b4d575c9a0ee 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -52,7 +52,7 @@ void do_invalidatepage(struct page *page, unsigned long offset)
 static inline void truncate_partial_page(struct page *page, unsigned partial)
 {
         zero_user_segment(page, partial, PAGE_CACHE_SIZE);
-        cleancache_flush_page(page->mapping, page);
+        cleancache_invalidate_page(page->mapping, page);
         if (page_has_private(page))
                 do_invalidatepage(page, partial);
 }
@@ -213,7 +213,7 @@ void truncate_inode_pages_range(struct address_space *mapping,
         pgoff_t end;
         int i;
 
-        cleancache_flush_inode(mapping);
+        cleancache_invalidate_inode(mapping);
         if (mapping->nrpages == 0)
                 return;
 
@@ -292,7 +292,7 @@ void truncate_inode_pages_range(struct address_space *mapping,
                 mem_cgroup_uncharge_end();
                 index++;
         }
-        cleancache_flush_inode(mapping);
+        cleancache_invalidate_inode(mapping);
 }
 EXPORT_SYMBOL(truncate_inode_pages_range);
 
@@ -444,7 +444,7 @@ int invalidate_inode_pages2_range(struct address_space *mapping,
         int ret2 = 0;
         int did_range_unmap = 0;
 
-        cleancache_flush_inode(mapping);
+        cleancache_invalidate_inode(mapping);
         pagevec_init(&pvec, 0);
         index = start;
         while (index <= end && pagevec_lookup(&pvec, mapping, index,
@@ -500,7 +500,7 @@ int invalidate_inode_pages2_range(struct address_space *mapping,
                 cond_resched();
                 index++;
         }
-        cleancache_flush_inode(mapping);
+        cleancache_invalidate_inode(mapping);
         return ret;
 }
 EXPORT_SYMBOL_GPL(invalidate_inode_pages2_range);