From: Nate Diller Use zero_user_page() instead of open-coding it. Signed-off-by: Nate Diller Signed-off-by: Andrew Morton --- fs/gfs2/bmap.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff -puN fs/gfs2/bmap.c~gfs2-use-zero_user_page fs/gfs2/bmap.c --- a/fs/gfs2/bmap.c~gfs2-use-zero_user_page +++ a/fs/gfs2/bmap.c @@ -885,7 +885,6 @@ static int gfs2_block_truncate_page(stru unsigned blocksize, iblock, length, pos; struct buffer_head *bh; struct page *page; - void *kaddr; int err; page = grab_cache_page(mapping, index); @@ -933,10 +932,7 @@ static int gfs2_block_truncate_page(stru if (sdp->sd_args.ar_data == GFS2_DATA_ORDERED || gfs2_is_jdata(ip)) gfs2_trans_add_bh(ip->i_gl, bh, 0); - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, length); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, offset, length, KM_USER0); unlock: unlock_page(page); _