mm: give the 'ret' variable a better name __do_page_cache_readahead
It counts the number of pages acted on, so name it nr_pages to make that
obvious.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
diff --git a/mm/readahead.c b/mm/readahead.c
index 539bbb6..16d0cb1 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -156,7 +156,7 @@ int __do_page_cache_readahead(struct address_space *mapping, struct file *filp,
unsigned long end_index; /* The last page we want to read */
LIST_HEAD(page_pool);
int page_idx;
- int ret = 0;
+ int nr_pages = 0;
loff_t isize = i_size_read(inode);
gfp_t gfp_mask = readahead_gfp_mask(mapping);
@@ -187,7 +187,7 @@ int __do_page_cache_readahead(struct address_space *mapping, struct file *filp,
list_add(&page->lru, &page_pool);
if (page_idx == nr_to_read - lookahead_size)
SetPageReadahead(page);
- ret++;
+ nr_pages++;
}
/*
@@ -195,11 +195,11 @@ int __do_page_cache_readahead(struct address_space *mapping, struct file *filp,
* uptodate then the caller will launch readpage again, and
* will then handle the error.
*/
- if (ret)
- read_pages(mapping, filp, &page_pool, ret, gfp_mask);
+ if (nr_pages)
+ read_pages(mapping, filp, &page_pool, nr_pages, gfp_mask);
BUG_ON(!list_empty(&page_pool));
out:
- return ret;
+ return nr_pages;
}
/*