mm/khugepaged.c: fix khugepaged's request size in collapse_file
commit5.4-rM2-2.2.x-imx-squashede5a59d308f
upstream. 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:99cb0dbd47
("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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
af7786b20c
commit
08eeec4452
|
@ -1592,7 +1592,7 @@ 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);
|
||||
|
|
Loading…
Reference in New Issue