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mm: cleanup descriptions of filler arg

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The often-NULL data arg to read_cache_page() and read_mapping_page()
functions is misdescribed as "destination for read data": no, it's the
first arg to the filler function, often struct file * to ->readpage().

Satisfy checkpatch.pl on those filler prototypes, and tidy up the
declarations in linux/pagemap.h.

Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Hugh Dickins
2011-07-25 17:12:23 -07:00
committed by Linus Torvalds
parent df077ac468
commit 5e5358e7cf
2 changed files with 11 additions and 13 deletions
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12
include/linux/pagemap.h
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@@ -255,26 +255,24 @@ static inline struct page *grab_cache_page(struct address_space *mapping,
extern struct page * grab_cache_page_nowait(struct address_space *mapping,
pgoff_t index);
extern struct page * read_cache_page_async(struct address_space *mapping,
pgoff_t index, filler_t *filler,
void *data);
pgoff_t index, filler_t *filler, void *data);
extern struct page * read_cache_page(struct address_space *mapping,
pgoff_t index, filler_t *filler,
void *data);
pgoff_t index, filler_t *filler, void *data);
extern struct page * read_cache_page_gfp(struct address_space *mapping,
pgoff_t index, gfp_t gfp_mask);
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)
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,
pgoff_t 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);