[E2FSPROGS] rename copy_file_range to copy_file_chunk

As of 2.27, glibc will have a copy_file_range library call to wrap the
new copy_file_range system call.  This conflicts with the function in
misc/create_inode.c, which this patch renames _copy_file_range.

Author: pwielders

package/e2fsprogs/0003-rename_copy_file_range_to_copy_file_chunk.patch

@@ -0,0 +1,56 @@
+From 01551bdba16ab16512a01affe02ade32c41ede8a Mon Sep 17 00:00:00 2001
+From: Palmer Dabbelt <palmer@dabbelt.com>
+Date: Fri, 29 Dec 2017 10:19:51 -0800
+Subject: [PATCH] misc: rename copy_file_range to copy_file_chunk
+
+As of 2.27, glibc will have a copy_file_range library call to wrap the
+new copy_file_range system call.  This conflicts with the function in
+misc/create_inode.c, which this patch renames _copy_file_range.
+
+Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
+Signed-off-by: Theodore Ts'o <tytso@mit.edu>
+---
+ misc/create_inode.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/misc/create_inode.c b/misc/create_inode.c
+index 08b4ec28d..deae05e69 100644
+--- a/misc/create_inode.c
++++ b/misc/create_inode.c
+@@ -398,7 +398,7 @@ static ssize_t my_pread(int fd, void *buf, size_t count, off_t offset)
+ }
+ #endif /* !defined HAVE_PREAD64 && !defined HAVE_PREAD */
+ 
+-static errcode_t copy_file_range(ext2_filsys fs, int fd, ext2_file_t e2_file,
++static errcode_t copy_file_chunk(ext2_filsys fs, int fd, ext2_file_t e2_file,
+ 				 off_t start, off_t end, char *buf,
+ 				 char *zerobuf)
+ {
+@@ -472,7 +472,7 @@ static errcode_t try_lseek_copy(ext2_filsys fs, int fd, struct stat *statbuf,
+ 
+ 		data_blk = data & ~(fs->blocksize - 1);
+ 		hole_blk = (hole + (fs->blocksize - 1)) & ~(fs->blocksize - 1);
+-		err = copy_file_range(fs, fd, e2_file, data_blk, hole_blk, buf,
++		err = copy_file_chunk(fs, fd, e2_file, data_blk, hole_blk, buf,
+ 				      zerobuf);
+ 		if (err)
+ 			return err;
+@@ -523,7 +523,7 @@ static errcode_t try_fiemap_copy(ext2_filsys fs, int fd, ext2_file_t e2_file,
+ 			goto out;
+ 		for (i = 0, ext = ext_buf; i < fiemap_buf->fm_mapped_extents;
+ 		     i++, ext++) {
+-			err = copy_file_range(fs, fd, e2_file, ext->fe_logical,
++			err = copy_file_chunk(fs, fd, e2_file, ext->fe_logical,
+ 					      ext->fe_logical + ext->fe_length,
+ 					      buf, zerobuf);
+ 			if (err)
+@@ -576,7 +576,7 @@ static errcode_t copy_file(ext2_filsys fs, int fd, struct stat *statbuf,
+ 		goto out;
+ #endif
+ 
+-	err = copy_file_range(fs, fd, e2_file, 0, statbuf->st_size, buf,
++	err = copy_file_chunk(fs, fd, e2_file, 0, statbuf->st_size, buf,
+ 			      zerobuf);
+ out:
+ 	ext2fs_free_mem(&zerobuf);
+