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[PATCH] export/change sync_page_range/_nolock()

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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 <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
OGAWA Hirofumi 2006-01-08 01:02:12 -08:00 • committed by Linus Torvalds
parent e5174baaea
commit 268fc16e34
2 changed files with 7 additions and 5 deletions
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4
include/linux/writeback.h
View file

@ -103,7 +103,9 @@ void balance_dirty_pages_ratelimited(struct address_space *mapping);
int pdflush_operation(void (*fn)(unsigned long), unsigned long arg0); int pdflush_operation(void (*fn)(unsigned long), unsigned long arg0);
int do_writepages(struct address_space *mapping, struct writeback_control *wbc); int do_writepages(struct address_space *mapping, struct writeback_control *wbc);
int sync_page_range(struct inode *inode, struct address_space *mapping, 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 */ /* pdflush.c */
extern int nr_pdflush_threads; /* Global so it can be exported to sysctl extern int nr_pdflush_threads; /* Global so it can be exported to sysctl

8
mm/filemap.c
View file

@ -280,7 +280,7 @@ static int wait_on_page_writeback_range(struct address_space *mapping,
* it is otherwise livelockable. * it is otherwise livelockable.
*/ */
int sync_page_range(struct inode *inode, struct address_space *mapping, 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 start = pos >> PAGE_CACHE_SHIFT;
pgoff_t end = (pos + count - 1) >> 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 * as it forces O_SYNC writers to different parts of the same file
* to be serialised right until io completion. * to be serialised right until io completion.
*/ */
static int sync_page_range_nolock(struct inode *inode, int sync_page_range_nolock(struct inode *inode, struct address_space *mapping,
struct address_space *mapping, loff_t pos, loff_t count)
loff_t pos, size_t count)
{ {
pgoff_t start = pos >> PAGE_CACHE_SHIFT; pgoff_t start = pos >> PAGE_CACHE_SHIFT;
pgoff_t end = (pos + count - 1) >> PAGE_CACHE_SHIFT; pgoff_t end = (pos + count - 1) >> PAGE_CACHE_SHIFT;
@ -322,6 +321,7 @@ static int sync_page_range_nolock(struct inode *inode,
ret = wait_on_page_writeback_range(mapping, start, end); ret = wait_on_page_writeback_range(mapping, start, end);
return ret; return ret;
} }
EXPORT_SYMBOL(sync_page_range_nolock);
/** /**
* filemap_fdatawait - walk the list of under-writeback pages of the given * filemap_fdatawait - walk the list of under-writeback pages of the given