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authorMatthew Wilcox (Oracle) <willy@infradead.org>2020-06-01 21:46:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-02 10:59:06 -0700
commitc2c7ad74b16206e0e6e9e80af962e63da778acf9 (patch)
tree13f63ed78189150dfd7c728e37e494631fb4836f
parent08eb9658ae128df77c4cd4ca5323d84b6b6e3824 (diff)
mm: rename readahead loop variable to 'i'
Change the type of page_idx to unsigned long, and rename it -- it's just a loop counter, not a page index. Suggested-by: John Hubbard <jhubbard@nvidia.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: William Kucharski <william.kucharski@oracle.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Cc: Chao Yu <yuchao0@huawei.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Cong Wang <xiyou.wangcong@gmail.com> Cc: Darrick J. Wong <darrick.wong@oracle.com> Cc: Eric Biggers <ebiggers@google.com> Cc: Gao Xiang <gaoxiang25@huawei.com> Cc: Jaegeuk Kim <jaegeuk@kernel.org> Cc: Joseph Qi <joseph.qi@linux.alibaba.com> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Zi Yan <ziy@nvidia.com> Cc: Miklos Szeredi <mszeredi@redhat.com> Link: http://lkml.kernel.org/r/20200414150233.24495-9-willy@infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/readahead.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/readahead.c b/mm/readahead.c
index 8a65d6bd97e0..7ce320854bad 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -163,13 +163,13 @@ void __do_page_cache_readahead(struct address_space *mapping,
struct page *page;
unsigned long end_index; /* The last page we want to read */
LIST_HEAD(page_pool);
- int page_idx;
loff_t isize = i_size_read(inode);
gfp_t gfp_mask = readahead_gfp_mask(mapping);
struct readahead_control rac = {
.mapping = mapping,
.file = filp,
};
+ unsigned long i;
if (isize == 0)
return;
@@ -179,8 +179,8 @@ void __do_page_cache_readahead(struct address_space *mapping,
/*
* Preallocate as many pages as we will need.
*/
- for (page_idx = 0; page_idx < nr_to_read; page_idx++) {
- pgoff_t page_offset = index + page_idx;
+ for (i = 0; i < nr_to_read; i++) {
+ pgoff_t page_offset = index + i;
if (page_offset > end_index)
break;
@@ -201,7 +201,7 @@ void __do_page_cache_readahead(struct address_space *mapping,
break;
page->index = page_offset;
list_add(&page->lru, &page_pool);
- if (page_idx == nr_to_read - lookahead_size)
+ if (i == nr_to_read - lookahead_size)
SetPageReadahead(page);
rac._nr_pages++;
}