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-rw-r--r--src/copy.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/copy.c b/src/copy.c
index c3d71cbc8..e3832c23a 100644
--- a/src/copy.c
+++ b/src/copy.c
@@ -75,6 +75,7 @@
# include <linux/falloc.h>
#endif
+/* See HAVE_FALLOCATE workaround when including this file. */
#ifdef HAVE_LINUX_FS_H
# include <linux/fs.h>
#endif
@@ -166,7 +167,8 @@ static int
punch_hole (int fd, off_t offset, off_t length)
{
int ret = 0;
-#if HAVE_FALLOCATE
+/* +0 is to work around older <linux/fs.h> defining HAVE_FALLOCATE to empty. */
+#if HAVE_FALLOCATE + 0
# if defined FALLOC_FL_PUNCH_HOLE && defined FALLOC_FL_KEEP_SIZE
ret = fallocate (fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
offset, length);