[PATCH 6/6] iomap: add a flag to report shared extents
"Darrick J. Wong" <[email protected]>
| Newsgroups | gmane.comp.file-systems.xfs.general |
|---|---|
| Message-ID | <147216788009.525.789325200721590680.stgit__24142.5996333875$1472167900$gmane$org@birch.djwong.org> |
Signed-off-by: Darrick J. Wong <[email protected]> --- fs/iomap.c | 2 ++ include/linux/iomap.h | 1 + 2 files changed, 3 insertions(+) diff --git a/fs/iomap.c b/fs/iomap.c index e9b3f99..ec411a6 100644 --- a/fs/iomap.c +++ b/fs/iomap.c @@ -512,6 +512,8 @@ static int iomap_to_fiemap(struct fiemap_extent_info *fi, if (iomap->flags & IOMAP_F_MERGED) flags |= FIEMAP_EXTENT_MERGED; + if (iomap->flags & IOMAP_F_SHARED) + flags |= FIEMAP_EXTENT_SHARED; return fiemap_fill_next_extent(fi, iomap->offset, iomap->blkno != IOMAP_NULL_BLOCK ? iomap->blkno << 9: 0, diff --git a/include/linux/iomap.h b/include/linux/iomap.h index 3a56212..c74226a 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -22,6 +22,7 @@ struct vm_fault; * Flags for iomap mappings: */ #define IOMAP_F_MERGED 0x01 /* contains multiple blocks/extents */ +#define IOMAP_F_SHARED 0x02 /* block shared with another file */ /* * Magic value for blkno: _______________________________________________ xfs mailing list [email protected] http://oss.sgi.com/mailman/listinfo/xfs