X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Fpagemap.h;h=862fc07dc6c02b32e88665236ae73f5ce43a1f07;hb=57f6b96c09c30e444e0d3fc3080feba037657a7b;hp=c3e255bf859487aee64d3de7b5b34bf9d23e002a;hpb=d5b9b787b5e1618dfe82a2c2a6972374e85b02db;p=linux-2.6

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index c3e255bf85..862fc07dc6 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -11,6 +11,7 @@
 #include <linux/compiler.h>
 #include <asm/uaccess.h>
 #include <linux/gfp.h>
+#include <linux/bitops.h>
 
 /*
  * Bits in mapping->flags.  The lower __GFP_BITS_SHIFT bits are the page
@@ -19,6 +20,16 @@
 #define	AS_EIO		(__GFP_BITS_SHIFT + 0)	/* IO error on async write */
 #define AS_ENOSPC	(__GFP_BITS_SHIFT + 1)	/* ENOSPC on async write */
 
+static inline void mapping_set_error(struct address_space *mapping, int error)
+{
+	if (error) {
+		if (error == -ENOSPC)
+			set_bit(AS_ENOSPC, &mapping->flags);
+		else
+			set_bit(AS_EIO, &mapping->flags);
+	}
+}
+
 static inline gfp_t mapping_gfp_mask(struct address_space * mapping)
 {
 	return (__force gfp_t)mapping->flags & __GFP_BITS_MASK;
@@ -73,13 +84,11 @@ static inline struct page *page_cache_alloc_cold(struct address_space *x)
 typedef int filler_t(void *, struct page *);
 
 extern struct page * find_get_page(struct address_space *mapping,
-				unsigned long index);
+				pgoff_t index);
 extern struct page * find_lock_page(struct address_space *mapping,
-				unsigned long index);
-extern __deprecated_for_modules struct page * find_trylock_page(
-			struct address_space *mapping, unsigned long index);
+				pgoff_t index);
 extern struct page * find_or_create_page(struct address_space *mapping,
-				unsigned long index, gfp_t gfp_mask);
+				pgoff_t index, gfp_t gfp_mask);
 unsigned find_get_pages(struct address_space *mapping, pgoff_t start,
 			unsigned int nr_pages, struct page **pages);
 unsigned find_get_pages_contig(struct address_space *mapping, pgoff_t start,
@@ -90,30 +99,42 @@ unsigned find_get_pages_tag(struct address_space *mapping, pgoff_t *index,
 /*
  * Returns locked page at given index in given cache, creating it if needed.
  */
-static inline struct page *grab_cache_page(struct address_space *mapping, unsigned long index)
+static inline struct page *grab_cache_page(struct address_space *mapping,
+								pgoff_t index)
 {
 	return find_or_create_page(mapping, index, mapping_gfp_mask(mapping));
 }
 
 extern struct page * grab_cache_page_nowait(struct address_space *mapping,
-				unsigned long index);
+				pgoff_t index);
+extern struct page * read_cache_page_async(struct address_space *mapping,
+				pgoff_t index, filler_t *filler,
+				void *data);
 extern struct page * read_cache_page(struct address_space *mapping,
-				unsigned long index, filler_t *filler,
+				pgoff_t index, filler_t *filler,
 				void *data);
 extern int read_cache_pages(struct address_space *mapping,
 		struct list_head *pages, filler_t *filler, void *data);
 
+static inline struct page *read_mapping_page_async(
+						struct address_space *mapping,
+						     pgoff_t index, void *data)
+{
+	filler_t *filler = (filler_t *)mapping->a_ops->readpage;
+	return read_cache_page_async(mapping, index, filler, data);
+}
+
 static inline struct page *read_mapping_page(struct address_space *mapping,
-					     unsigned long index, void *data)
+					     pgoff_t index, void *data)
 {
 	filler_t *filler = (filler_t *)mapping->a_ops->readpage;
 	return read_cache_page(mapping, index, filler, data);
 }
 
 int add_to_page_cache(struct page *page, struct address_space *mapping,
-				unsigned long index, gfp_t gfp_mask);
+				pgoff_t index, gfp_t gfp_mask);
 int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
-				unsigned long index, gfp_t gfp_mask);
+				pgoff_t index, gfp_t gfp_mask);
 extern void remove_from_page_cache(struct page *page);
 extern void __remove_from_page_cache(struct page *page);