From f3915f83e84c1f14358aaa91e8785d6169092176 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 1 Jul 2019 23:54:31 +0200 Subject: gfs2: use page_offset in gfs2_page_mkwrite Without casting page->index to a guaranteed 64-bit type, the value might be treated as 32-bit on 32-bit platforms and thus get truncated. Signed-off-by: Christoph Hellwig Signed-off-by: Andreas Gruenbacher --- fs/gfs2/file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/gfs2/file.c') diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 28bdbeb11030..5d61113b3f50 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -408,7 +408,7 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf) struct gfs2_sbd *sdp = GFS2_SB(inode); struct gfs2_alloc_parms ap = { .aflags = 0, }; unsigned long last_index; - u64 pos = page->index << PAGE_SHIFT; + u64 pos = page_offset(page); unsigned int data_blocks, ind_blocks, rblocks; struct gfs2_holder gh; loff_t size; -- cgit v1.2.3-59-g8ed1b