From 19fe5f643f89f29c1a16bc474d91506b0e9a6232 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Sun, 1 Oct 2017 17:55:54 -0400 Subject: iomap: Switch from blkno to disk offset Replace iomap->blkno, the sector number, with iomap->addr, the disk offset in bytes. For invalid disk offsets, use the special value IOMAP_NULL_ADDR instead of IOMAP_NULL_BLOCK. This allows to use iomap for mappings which are not block aligned, such as inline data on ext4. Signed-off-by: Andreas Gruenbacher Signed-off-by: Theodore Ts'o Reviewed-by: Darrick J. Wong # iomap, xfs Reviewed-by: Jan Kara --- fs/buffer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/buffer.c') diff --git a/fs/buffer.c b/fs/buffer.c index 170df856bdb9..bd4d0923cdce 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -1978,8 +1978,8 @@ iomap_to_bh(struct inode *inode, sector_t block, struct buffer_head *bh, case IOMAP_MAPPED: if (offset >= i_size_read(inode)) set_buffer_new(bh); - bh->b_blocknr = (iomap->blkno >> (inode->i_blkbits - 9)) + - ((offset - iomap->offset) >> inode->i_blkbits); + bh->b_blocknr = (iomap->addr + offset - iomap->offset) >> + inode->i_blkbits; set_buffer_mapped(bh); break; } -- cgit v1.2.3