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| author |   Andreas Gruenbacher <agruenba@redhat.com> | 2017-10-01 17:55:54 -0400 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2017-10-01 17:55:54 -0400 |
| commit | 19fe5f643f89f29c1a16bc474d91506b0e9a6232 (patch) | |
| tree | a6fce3b138de34c1058b807cff32bbd375172b04 /include/linux/iomap.h | |
| parent | Linux 4.14-rc3 (diff) | |
| download | linux-dev-19fe5f643f89f29c1a16bc474d91506b0e9a6232.tar.xz linux-dev-19fe5f643f89f29c1a16bc474d91506b0e9a6232.zip | |
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 'include/linux/iomap.h')
| -rw-r--r-- | include/linux/iomap.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/include/linux/iomap.h b/include/linux/iomap.h index f64dc6ce5161..7b8a615fa021 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -15,8 +15,8 @@ struct vm_fault; */ #define IOMAP_HOLE 0x01 /* no blocks allocated, need allocation */ #define IOMAP_DELALLOC 0x02 /* delayed allocation blocks */ -#define IOMAP_MAPPED 0x03 /* blocks allocated @blkno */ -#define IOMAP_UNWRITTEN 0x04 /* blocks allocated @blkno in unwritten state */ +#define IOMAP_MAPPED 0x03 /* blocks allocated at @addr */ +#define IOMAP_UNWRITTEN 0x04 /* blocks allocated at @addr in unwritten state */ /* * Flags for all iomap mappings: @@ -30,12 +30,12 @@ struct vm_fault; #define IOMAP_F_SHARED 0x20 /* block shared with another file */ /* - * Magic value for blkno: + * Magic value for addr: */ -#define IOMAP_NULL_BLOCK -1LL /* blkno is not valid */ +#define IOMAP_NULL_ADDR -1ULL /* addr is not valid */ struct iomap { - sector_t blkno; /* 1st sector of mapping, 512b units */ + u64 addr; /* disk offset of mapping, bytes */ loff_t offset; /* file offset of mapping, bytes */ u64 length; /* length of mapping, bytes */ u16 type; /* type of mapping */ |