[PATCH 6/6] export/change sync_page_range/_nolock()

This exports/changes the sync_page_range/_nolock(). The fatfs needs
sync_page_range/_nolock() for expanding truncate, and changes "size_t
count" to "loff_t count".

Signed-off-by: OGAWA Hirofumi <[email protected]>
---

 include/linux/writeback.h |    4 +++-
 mm/filemap.c              |    8 ++++----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff -puN include/linux/writeback.h~export-sync_page_range_nolock include/linux/writeback.h
--- linux-2.6.14/include/linux/writeback.h~export-sync_page_range_nolock	2005-11-07 03:59:03.000000000 +0900
+++ linux-2.6.14-hirofumi/include/linux/writeback.h	2005-11-07 03:59:03.000000000 +0900
@@ -108,7 +108,9 @@ void balance_dirty_pages_ratelimited(str
 int pdflush_operation(void (*fn)(unsigned long), unsigned long arg0);
 int do_writepages(struct address_space *mapping, struct writeback_control *wbc);
 int sync_page_range(struct inode *inode, struct address_space *mapping,
-			loff_t pos, size_t count);
+			loff_t pos, loff_t count);
+int sync_page_range_nolock(struct inode *inode, struct address_space *mapping,
+			   loff_t pos, loff_t count);
 
 /* pdflush.c */
 extern int nr_pdflush_threads;	/* Global so it can be exported to sysctl
diff -puN mm/filemap.c~export-sync_page_range_nolock mm/filemap.c
--- linux-2.6.14/mm/filemap.c~export-sync_page_range_nolock	2005-11-07 03:59:03.000000000 +0900
+++ linux-2.6.14-hirofumi/mm/filemap.c	2005-11-07 03:59:03.000000000 +0900
@@ -280,7 +280,7 @@ static int wait_on_page_writeback_range(
  * it is otherwise livelockable.
  */
 int sync_page_range(struct inode *inode, struct address_space *mapping,
-			loff_t pos, size_t count)
+			loff_t pos, loff_t count)
 {
 	pgoff_t start = pos >> PAGE_CACHE_SHIFT;
 	pgoff_t end = (pos + count - 1) >> PAGE_CACHE_SHIFT;
@@ -305,9 +305,8 @@ EXPORT_SYMBOL(sync_page_range);
  * as it forces O_SYNC writers to different parts of the same file
  * to be serialised right until io completion.
  */
-static int sync_page_range_nolock(struct inode *inode,
-				  struct address_space *mapping,
-				  loff_t pos, size_t count)
+int sync_page_range_nolock(struct inode *inode, struct address_space *mapping,
+			   loff_t pos, loff_t count)
 {
 	pgoff_t start = pos >> PAGE_CACHE_SHIFT;
 	pgoff_t end = (pos + count - 1) >> PAGE_CACHE_SHIFT;
@@ -322,6 +321,7 @@ static int sync_page_range_nolock(struct
 		ret = wait_on_page_writeback_range(mapping, start, end);
 	return ret;
 }
+EXPORT_SYMBOL(sync_page_range_nolock);
 
 /**
  * filemap_fdatawait - walk the list of under-writeback pages of the given
_
-
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---

• Follow-Ups:
  • [PATCH 7/6] fat: Support a truncate() for expanding size
    • From: OGAWA Hirofumi <[email protected]>

• References:
  • [PATCH 1/6] fat: move fat_clusters_flush() to write_super()
    • From: OGAWA Hirofumi <[email protected]>
  • [PATCH] fat: use sb_find_get_block() instead of sb_getblk()
    • From: OGAWA Hirofumi <[email protected]>
  • [PATCH 3/6] fat: add the read/writepages()
    • From: OGAWA Hirofumi <[email protected]>
  • [PATCH 4/6] fat: s/EXPORT_SYMBOL/EXPORT_SYMBOL_GPL/
    • From: OGAWA Hirofumi <[email protected]>
  • [PATCH 5/6] fat: support ->direct_IO()
    • From: OGAWA Hirofumi <[email protected]>

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