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| author | Andreas Gruenbacher <agruenba@redhat.com> | 2017-10-02 00:55:54 +0300 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2017-10-02 00:55:54 +0300 |
| commit | 19fe5f643f89f29c1a16bc474d91506b0e9a6232 (patch) | |
| tree | a6fce3b138de34c1058b807cff32bbd375172b04 /fs/buffer.c | |
| parent | 9e66317d3c92ddaab330c125dfe9d06eee268aff (diff) | |
| download | linux-19fe5f643f89f29c1a16bc474d91506b0e9a6232.tar.xz | |
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 <agruenba@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> # iomap, xfs
Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/buffer.c')
| -rw-r--r-- | fs/buffer.c | 4 |
1 files changed, 2 insertions, 2 deletions
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; } |