diff options
| author |   David Howells <dhowells@redhat.com> | 2020-09-04 16:36:16 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-09-05 12:14:30 -0700 |
| commit | e5a59d308f52bb0052af5790c22173651b187465 (patch) | |
| tree | 0ca1212a1af29f43b819e302f5975ab131694347 /mm | |
| parent | mm/hugetlb: fix a race between hugetlb sysctl handlers (diff) | |
| download | wireguard-linux-e5a59d308f52bb0052af5790c22173651b187465.tar.xz wireguard-linux-e5a59d308f52bb0052af5790c22173651b187465.zip | |
mm/khugepaged.c: fix khugepaged's request size in collapse_file
collapse_file() in khugepaged passes PAGE_SIZE as the number of pages to
be read to page_cache_sync_readahead(). The intent was probably to read
a single page. Fix it to use the number of pages to the end of the
window instead.
Fixes: 99cb0dbd47a1 ("mm,thp: add read-only THP support for (non-shmem) FS")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Yang Shi <shy828301@gmail.com>
Acked-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Cc: Eric Biggers <ebiggers@google.com>
Link: https://lkml.kernel.org/r/20200903140844.14194-2-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/khugepaged.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index e749e568e1ea..cfa0dba5fd3b 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1709,7 +1709,7 @@ static void collapse_file(struct mm_struct *mm, xas_unlock_irq(&xas); page_cache_sync_readahead(mapping, &file->f_ra, file, index, - PAGE_SIZE); + end - index); /* drain pagevecs to help isolate_lru_page() */ lru_add_drain(); page = find_lock_page(mapping, index); |