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nilfs2: simplify nilfs_get_page function

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Implementation of nilfs_get_page() is a bit old as below:

 - A common read_mapping_page inline function is now available instead
   of its read_cache_page use.
 - wait_on_page_locked() use in the function is eliminable since
   read_cache_page function does the same thing through wait_on_page_read().
 - PageUptodate() check is eliminable for the same reason.

This renews nilfs_get_page() based on these points.

Signed-off-by: Ryusuke Konishi <[email protected]>
This commit is contained in:
Ryusuke Konishi 2010-07-24 17:09:10 +09:00
commit c28e69d933
1 changed files with 2 additions and 5 deletions
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7
fs/nilfs2/dir.c
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@ -199,13 +199,10 @@ fail:
static struct page *nilfs_get_page(struct inode *dir, unsigned long n)
{
struct address_space *mapping = dir->i_mapping;
struct page *page = read_cache_page(mapping, n,
(filler_t *)mapping->a_ops->readpage, NULL);
struct page *page = read_mapping_page(mapping, n, NULL);
if (!IS_ERR(page)) {
wait_on_page_locked(page);
kmap(page);
if (!PageUptodate(page))
goto fail;
if (!PageChecked(page))
nilfs_check_page(page);
if (PageError(page))