configure: don't check for fallocate

fallocate has been supported since Linux 2.6.23 and glibc 2.10.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

6 files changed, 0 insertions, 38 deletions

diff --git a/configure.ac b/configure.ac
index 79fb475f7f..b915733bf6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -162,7 +162,6 @@ AC_PACKAGE_NEED_PTHREADMUTEXINIT
 AC_PACKAGE_NEED_URCU_H
 AC_PACKAGE_NEED_RCU_INIT
 
-AC_HAVE_FALLOCATE
 AC_HAVE_PWRITEV2
 AC_HAVE_PREADV
 AC_HAVE_COPY_FILE_RANGE
diff --git a/include/builddefs.in b/include/builddefs.in
index 5ee969afae..be6861e0cf 100644
--- a/include/builddefs.in
+++ b/include/builddefs.in
@@ -90,7 +90,6 @@ ENABLE_SCRUB	= @enable_scrub@
 
 HAVE_ZIPPED_MANPAGES = @have_zipped_manpages@
 
-HAVE_FALLOCATE = @have_fallocate@
 HAVE_PREADV = @have_preadv@
 HAVE_PWRITEV2 = @have_pwritev2@
 HAVE_COPY_FILE_RANGE = @have_copy_file_range@
@@ -144,9 +143,6 @@ endif
 ifeq ($(HAVE_GETFSMAP),yes)
 PCFLAGS+= -DHAVE_GETFSMAP
 endif
-ifeq ($(HAVE_FALLOCATE),yes)
-PCFLAGS += -DHAVE_FALLOCATE
-endif
 
 LIBICU_LIBS = @libicu_LIBS@
 LIBICU_CFLAGS = @libicu_CFLAGS@
diff --git a/include/linux.h b/include/linux.h
index eddc4ad9c8..95a0deee25 100644
--- a/include/linux.h
+++ b/include/linux.h
@@ -27,9 +27,7 @@
 #include <asm/types.h>
 #include <mntent.h>
 #include <fcntl.h>
-#if defined(HAVE_FALLOCATE)
 #include <linux/falloc.h>
-#endif
 #ifdef OVERRIDE_SYSTEM_FSXATTR
 # define fsxattr sys_fsxattr
 #endif
diff --git a/io/Makefile b/io/Makefile
index 837716238e..eb6ad05745 100644
--- a/io/Makefile
+++ b/io/Makefile
@@ -33,10 +33,6 @@ ifeq ($(ENABLE_EDITLINE),yes)
 LLDLIBS += $(LIBEDITLINE) $(LIBTERMCAP)
 endif
 
-ifeq ($(HAVE_FALLOCATE),yes)
-LCFLAGS += -DHAVE_FALLOCATE
-endif
-
 # Also implies PWRITEV
 ifeq ($(HAVE_PREADV),yes)
 LCFLAGS += -DHAVE_PREADV -DHAVE_PWRITEV
diff --git a/io/prealloc.c b/io/prealloc.c
index 5805897a4a..8e968c9f24 100644
--- a/io/prealloc.c
+++ b/io/prealloc.c
@@ -4,9 +4,7 @@
  * All Rights Reserved.
  */
 
-#if defined(HAVE_FALLOCATE)
 #include <linux/falloc.h>
-#endif
 #include "command.h"
 #include "input.h"
 #include "init.h"
@@ -37,14 +35,12 @@ static cmdinfo_t freesp_cmd;
 static cmdinfo_t resvsp_cmd;
 static cmdinfo_t unresvsp_cmd;
 static cmdinfo_t zero_cmd;
-#if defined(HAVE_FALLOCATE)
 static cmdinfo_t falloc_cmd;
 static cmdinfo_t fpunch_cmd;
 static cmdinfo_t fcollapse_cmd;
 static cmdinfo_t finsert_cmd;
 static cmdinfo_t fzero_cmd;
 static cmdinfo_t funshare_cmd;
-#endif
 
 static int
 offset_length(
@@ -182,7 +178,6 @@ zero_f(
 }
 
 
-#if defined (HAVE_FALLOCATE)
 static void
 falloc_help(void)
 {
@@ -381,7 +376,6 @@ funshare_f(
 	}
 	return 0;
 }
-#endif	/* HAVE_FALLOCATE */
 
 void
 prealloc_init(void)
@@ -435,7 +429,6 @@ prealloc_init(void)
 	add_command(&unresvsp_cmd);
 	add_command(&zero_cmd);
 
-#if defined (HAVE_FALLOCATE)
 	falloc_cmd.name = "falloc";
 	falloc_cmd.cfunc = fallocate_f;
 	falloc_cmd.argmin = 2;
@@ -496,5 +489,4 @@ prealloc_init(void)
 	funshare_cmd.oneline =
 	_("unshares shared blocks within the range");
 	add_command(&funshare_cmd);
-#endif	/* HAVE_FALLOCATE */
 }
diff --git a/m4/package_libcdev.m4 b/m4/package_libcdev.m4
index 17319bb231..758b9378cd 100644
--- a/m4/package_libcdev.m4
+++ b/m4/package_libcdev.m4
@@ -1,23 +1,4 @@
 #
-# Check if we have a fallocate libc call (Linux)
-#
-AC_DEFUN([AC_HAVE_FALLOCATE],
-  [ AC_MSG_CHECKING([for fallocate])
-    AC_LINK_IFELSE(
-    [	AC_LANG_PROGRAM([[
-#define _GNU_SOURCE
-#include <fcntl.h>
-#include <linux/falloc.h>
-	]], [[
-fallocate(0, 0, 0, 0);
-	]])
-    ], have_fallocate=yes
-       AC_MSG_RESULT(yes),
-       AC_MSG_RESULT(no))
-    AC_SUBST(have_fallocate)
-  ])
-
-#
 # Check if we have a preadv libc call (Linux)
 #
 AC_DEFUN([AC_HAVE_PREADV],