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gfs2: use page_offset in gfs2_page_mkwrite

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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 <hch@lst.de>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
This commit is contained in:
Christoph Hellwig 2019-07-01 23:54:31 +02:00 committed by Andreas Gruenbacher
parent f29e62eed2
commit f3915f83e8
1 changed files with 1 additions and 1 deletions
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fs/gfs2/file.c
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@ -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;