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filemap: convert some unsigned long to pgoff_t

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Convert some 'unsigned long' to pgoff_t.

Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Fengguang Wu 2007-10-16 01:24:37 -07:00 committed by Linus Torvalds
parent b2c3843b1e
commit 57f6b96c09
2 changed files with 28 additions and 27 deletions
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23
include/linux/pagemap.h
View File

@ -84,11 +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);
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,
@ -99,41 +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,
unsigned long index, filler_t *filler,
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,
unsigned long index, void *data)
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);

32
mm/filemap.c
View File

@ -593,7 +593,7 @@ void fastcall __lock_page_nosync(struct page *page)
* Is there a pagecache struct page at the given (mapping, offset) tuple?
* If yes, increment its refcount and return it; if no, return NULL.
*/
struct page * find_get_page(struct address_space *mapping, unsigned long offset)
struct page * find_get_page(struct address_space *mapping, pgoff_t offset)
{
struct page *page;
@ -617,7 +617,7 @@ EXPORT_SYMBOL(find_get_page);
* Returns zero if the page was not present. find_lock_page() may sleep.
*/
struct page *find_lock_page(struct address_space *mapping,
unsigned long offset)
pgoff_t offset)
{
struct page *page;
@ -663,7 +663,7 @@ EXPORT_SYMBOL(find_lock_page);
* memory exhaustion.
*/
struct page *find_or_create_page(struct address_space *mapping,
unsigned long index, gfp_t gfp_mask)
pgoff_t index, gfp_t gfp_mask)
{
struct page *page, *cached_page = NULL;
int err;
@ -797,7 +797,7 @@ EXPORT_SYMBOL(find_get_pages_tag);
* and deadlock against the caller's locked page.
*/
struct page *
grab_cache_page_nowait(struct address_space *mapping, unsigned long index)
grab_cache_page_nowait(struct address_space *mapping, pgoff_t index)
{
struct page *page = find_get_page(mapping, index);
@ -866,10 +866,10 @@ void do_generic_mapping_read(struct address_space *mapping,
read_actor_t actor)
{
struct inode *inode = mapping->host;
unsigned long index;
unsigned long offset;
unsigned long last_index;
unsigned long prev_index;
pgoff_t index;
pgoff_t last_index;
pgoff_t prev_index;
unsigned long offset; /* offset into pagecache page */
unsigned int prev_offset;
struct page *cached_page;
int error;
@ -883,7 +883,7 @@ void do_generic_mapping_read(struct address_space *mapping,
for (;;) {
struct page *page;
unsigned long end_index;
pgoff_t end_index;
loff_t isize;
unsigned long nr, ret;
@ -1217,7 +1217,7 @@ EXPORT_SYMBOL(generic_file_aio_read);
static ssize_t
do_readahead(struct address_space *mapping, struct file *filp,
unsigned long index, unsigned long nr)
pgoff_t index, unsigned long nr)
{
if (!mapping || !mapping->a_ops || !mapping->a_ops->readpage)
return -EINVAL;
@ -1237,8 +1237,8 @@ asmlinkage ssize_t sys_readahead(int fd, loff_t offset, size_t count)
if (file) {
if (file->f_mode & FMODE_READ) {
struct address_space *mapping = file->f_mapping;
unsigned long start = offset >> PAGE_CACHE_SHIFT;
unsigned long end = (offset + count - 1) >> PAGE_CACHE_SHIFT;
pgoff_t start = offset >> PAGE_CACHE_SHIFT;
pgoff_t end = (offset + count - 1) >> PAGE_CACHE_SHIFT;
unsigned long len = end - start + 1;
ret = do_readahead(mapping, file, start, len);
}
@ -1256,7 +1256,7 @@ asmlinkage ssize_t sys_readahead(int fd, loff_t offset, size_t count)
* This adds the requested page to the page cache if it isn't already there,
* and schedules an I/O to read in its contents from disk.
*/
static int fastcall page_cache_read(struct file * file, unsigned long offset)
static int fastcall page_cache_read(struct file * file, pgoff_t offset)
{
struct address_space *mapping = file->f_mapping;
struct page *page;
@ -1497,7 +1497,7 @@ EXPORT_SYMBOL(generic_file_mmap);
EXPORT_SYMBOL(generic_file_readonly_mmap);
static struct page *__read_cache_page(struct address_space *mapping,
unsigned long index,
pgoff_t index,
int (*filler)(void *,struct page*),
void *data)
{
@ -1538,7 +1538,7 @@ static struct page *__read_cache_page(struct address_space *mapping,
* after submitting it to the filler.
*/
struct page *read_cache_page_async(struct address_space *mapping,
unsigned long index,
pgoff_t index,
int (*filler)(void *,struct page*),
void *data)
{
@ -1586,7 +1586,7 @@ EXPORT_SYMBOL(read_cache_page_async);
* If the page does not get brought uptodate, return -EIO.
*/
struct page *read_cache_page(struct address_space *mapping,
unsigned long index,
pgoff_t index,
int (*filler)(void *,struct page*),
void *data)
{