[PATCH 6/9] iomap: Remove length and start fields from iomap_fiemap

[Carlos Maiolino <cmaiolino@xxxxxxxxxx>]

fiemap_extent_info now embeds start and length parameters, users of
iomap_fiemap() doesn't need to pass it individually anymore.

Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Signed-off-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>

---
Changelog:
	V5:
		- Rebased against 5.3
		- Fix small conflict with previous patch
		  due indentation in xfs_vn_fiemap

 fs/gfs2/inode.c       | 4 +---
 fs/iomap/fiemap.c     | 4 +++-
 fs/xfs/xfs_iops.c     | 8 ++------
 include/linux/iomap.h | 2 +-
 4 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index c8310b823f1d..dc192dfd8941 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -2003,8 +2003,6 @@ static int gfs2_getattr(const struct path *path, struct kstat *stat,
 
 static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo)
 {
-	u64 start = fieinfo->fi_start;
-	u64 len = fieinfo->fi_len;
 	struct gfs2_inode *ip = GFS2_I(inode);
 	struct gfs2_holder gh;
 	int ret;
@@ -2015,7 +2013,7 @@ static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo)
 	if (ret)
 		goto out;
 
-	ret = iomap_fiemap(inode, fieinfo, start, len, &gfs2_iomap_ops);
+	ret = iomap_fiemap(inode, fieinfo, &gfs2_iomap_ops);
 
 	gfs2_glock_dq_uninit(&gh);
 
diff --git a/fs/iomap/fiemap.c b/fs/iomap/fiemap.c
index f26fdd36e383..03f214f5df94 100644
--- a/fs/iomap/fiemap.c
+++ b/fs/iomap/fiemap.c
@@ -65,9 +65,11 @@ iomap_fiemap_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
 }
 
 int iomap_fiemap(struct inode *inode, struct fiemap_extent_info *fi,
-		loff_t start, loff_t len, const struct iomap_ops *ops)
+		const struct iomap_ops *ops)
 {
 	struct fiemap_ctx ctx;
+	loff_t start = fi->fi_start;
+	loff_t len = fi->fi_len;
 	loff_t ret;
 
 	memset(&ctx, 0, sizeof(ctx));
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index 89982271ffce..514c4620a9e8 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -1102,18 +1102,14 @@ xfs_vn_fiemap(
 	struct inode			*inode,
 	struct fiemap_extent_info	*fieinfo)
 {
-	u64				start = fieinfo->fi_start;
-	u64				length = fieinfo->fi_len;
 	int				error;
 
 	xfs_ilock(XFS_I(inode), XFS_IOLOCK_SHARED);
 	if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) {
 		fieinfo->fi_flags &= ~FIEMAP_FLAG_XATTR;
-		error = iomap_fiemap(inode, fieinfo, start, length,
-				&xfs_xattr_iomap_ops);
+		error = iomap_fiemap(inode, fieinfo, &xfs_xattr_iomap_ops);
 	} else {
-		error = iomap_fiemap(inode, fieinfo, start, length,
-				&xfs_iomap_ops);
+		error = iomap_fiemap(inode, fieinfo, &xfs_iomap_ops);
 	}
 	xfs_iunlock(XFS_I(inode), XFS_IOLOCK_SHARED);
 
diff --git a/include/linux/iomap.h b/include/linux/iomap.h
index bc499ceae392..2d4671aae397 100644
--- a/include/linux/iomap.h
+++ b/include/linux/iomap.h
@@ -175,7 +175,7 @@ int iomap_truncate_page(struct inode *inode, loff_t pos, bool *did_zero,
 vm_fault_t iomap_page_mkwrite(struct vm_fault *vmf,
 			const struct iomap_ops *ops);
 int iomap_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
-		loff_t start, loff_t len, const struct iomap_ops *ops);
+		const struct iomap_ops *ops);
 loff_t iomap_seek_hole(struct inode *inode, loff_t offset,
 		const struct iomap_ops *ops);
 loff_t iomap_seek_data(struct inode *inode, loff_t offset,
-- 
2.20.1