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authorChristoph Hellwig <hch@lst.de>2016-08-29 11:33:58 +1000
committerDave Chinner <david@fromorbit.com>2016-08-29 11:33:58 +1000
commit17de0a9ff3df8f54f2f47746d118112d4e61d973 (patch)
treeb097752623a7a6a8e1be1540a52a6eb376da76eb /fs/iomap.c
parent800b2694f890cc35a1bda63501fc71c94389d517 (diff)
downloadlinux-17de0a9ff3df8f54f2f47746d118112d4e61d973.tar.bz2
iomap: don't set FIEMAP_EXTENT_MERGED for extent based filesystems
Filesystems like XFS that use extents should not set the FIEMAP_EXTENT_MERGED flag in the fiemap extent structures. To allow for both behaviors for the upcoming gfs2 usage split the iomap type field into type and flags, and only set FIEMAP_EXTENT_MERGED if the IOMAP_F_MERGED flag is set. The flags field will also come in handy for future features such as shared extents on reflink-enabled file systems. Reported-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/iomap.c')
-rw-r--r--fs/iomap.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/iomap.c b/fs/iomap.c
index 0342254646e3..706270f21b35 100644
--- a/fs/iomap.c
+++ b/fs/iomap.c
@@ -428,9 +428,12 @@ static int iomap_to_fiemap(struct fiemap_extent_info *fi,
break;
}
+ if (iomap->flags & IOMAP_F_MERGED)
+ flags |= FIEMAP_EXTENT_MERGED;
+
return fiemap_fill_next_extent(fi, iomap->offset,
iomap->blkno != IOMAP_NULL_BLOCK ? iomap->blkno << 9: 0,
- iomap->length, flags | FIEMAP_EXTENT_MERGED);
+ iomap->length, flags);
}