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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-06-01 21:46:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-02 10:59:06 -0700 |
| commit | ef8153b609aa9302f1e727218068b84ac8b060e4 (patch) | |
| tree | 611006e2d0ca119e22ea4a954091c7f21165f132 /mm/readahead.c | |
| parent | c2c7ad74b16206e0e6e9e80af962e63da778acf9 (diff) | |
| download | linux-ef8153b609aa9302f1e727218068b84ac8b060e4.tar.gz linux-ef8153b609aa9302f1e727218068b84ac8b060e4.tar.bz2 linux-ef8153b609aa9302f1e727218068b84ac8b060e4.zip | |
mm: remove 'page_offset' from readahead loop
Replace the page_offset variable with 'index + i'.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Cc: Chao Yu <yuchao0@huawei.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Dave Chinner <dchinner@redhat.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: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Link: http://lkml.kernel.org/r/20200414150233.24495-10-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/readahead.c')
| -rw-r--r-- | mm/readahead.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/mm/readahead.c b/mm/readahead.c index 7ce320854bad..ddc63d3b07b8 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -180,12 +180,10 @@ void __do_page_cache_readahead(struct address_space *mapping, * Preallocate as many pages as we will need. */ for (i = 0; i < nr_to_read; i++) { - pgoff_t page_offset = index + i; - - if (page_offset > end_index) + if (index + i > end_index) break; - page = xa_load(&mapping->i_pages, page_offset); + page = xa_load(&mapping->i_pages, index + i); if (page && !xa_is_value(page)) { /* * Page already present? Kick off the current batch of @@ -199,7 +197,7 @@ void __do_page_cache_readahead(struct address_space *mapping, page = __page_cache_alloc(gfp_mask); if (!page) break; - page->index = page_offset; + page->index = index + i; list_add(&page->lru, &page_pool); if (i == nr_to_read - lookahead_size) SetPageReadahead(page); |