xfs_io: fix copy_file_range symbol name collision

glibc 2.27 has a copy_file_range wrapper, so we need to change our
internal function out of the way to avoid compiler warnings.

Reported-by: fredrik@crux.nu
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

diff --git a/io/copy_file_range.c b/io/copy_file_range.c
index d1dfc5a5e33a50c9af3867770351151d5271f142..99fba20a49530517b4ed567d5507fae645fc51c5 100644 (file)
--- a/io/copy_file_range.c
+++ b/io/copy_file_range.c
@@ -42,13 +42,18 @@ copy_range_help(void)
 "));
 }
 
+/*
+ * Issue a raw copy_file_range syscall; for our test program we don't want the
+ * glibc buffered copy fallback.
+ */
 static loff_t
-copy_file_range(int fd, loff_t *src, loff_t *dst, size_t len)
+copy_file_range_cmd(int fd, loff_t *src, loff_t *dst, size_t len)
 {
        loff_t ret;
 
        do {
-               ret = syscall(__NR_copy_file_range, fd, src, file->fd, dst, len, 0);
+               ret = syscall(__NR_copy_file_range, fd, src, file->fd, dst,
+                               len, 0);
                if (ret == -1) {
                        perror("copy_range");
                        return errno;
@@ -130,7 +135,7 @@ copy_range_f(int argc, char **argv)
                copy_dst_truncate();
        }
 
-       ret = copy_file_range(fd, &src, &dst, len);
+       ret = copy_file_range_cmd(fd, &src, &dst, len);
        close(fd);
        return ret;
 }