[PATCH 09/27] configure: don't check for fadvise

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fadvise has been supported since Linux 2.5.60 and glibc 2.2.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 configure.ac          |  1 -
 include/builddefs.in  |  1 -
 io/Makefile           |  9 +--------
 io/io.h               |  5 -----
 m4/package_libcdev.m4 | 18 ------------------
 5 files changed, 1 insertion(+), 33 deletions(-)

diff --git a/configure.ac b/configure.ac
index a94360090..478eadc6c 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_FADVISE
 AC_HAVE_MADVISE
 AC_HAVE_MINCORE
 AC_HAVE_SENDFILE
diff --git a/include/builddefs.in b/include/builddefs.in
index a00283da1..42dc23174 100644
--- a/include/builddefs.in
+++ b/include/builddefs.in
@@ -90,7 +90,6 @@ ENABLE_SCRUB	= @enable_scrub@
 
 HAVE_ZIPPED_MANPAGES = @have_zipped_manpages@
 
-HAVE_FADVISE = @have_fadvise@
 HAVE_MADVISE = @have_madvise@
 HAVE_MINCORE = @have_mincore@
 HAVE_SENDFILE = @have_sendfile@
diff --git a/io/Makefile b/io/Makefile
index 53fef09e8..a8ea64010 100644
--- a/io/Makefile
+++ b/io/Makefile
@@ -13,19 +13,12 @@ CFILES = init.c \
 	file.c freeze.c fsuuid.c fsync.c getrusage.c imap.c inject.c label.c \
 	link.c mmap.c open.c parent.c pread.c prealloc.c pwrite.c reflink.c \
 	resblks.c scrub.c seek.c shutdown.c stat.c swapext.c sync.c \
-	truncate.c utimes.c
+	truncate.c utimes.c fadvise.c
 
 LLDLIBS = $(LIBXCMD) $(LIBHANDLE) $(LIBFROG) $(LIBPTHREAD) $(LIBUUID)
 LTDEPENDENCIES = $(LIBXCMD) $(LIBHANDLE) $(LIBFROG)
 LLDFLAGS = -static-libtool-libs
 
-ifeq ($(HAVE_FADVISE),yes)
-CFILES += fadvise.c
-LCFLAGS += -DHAVE_FADVISE
-else
-LSRCFILES += fadvise.c
-endif
-
 ifeq ($(HAVE_MADVISE),yes)
 CFILES += madvise.c
 LCFLAGS += -DHAVE_MADVISE
diff --git a/io/io.h b/io/io.h
index fe474faf4..ad90cf3cb 100644
--- a/io/io.h
+++ b/io/io.h
@@ -116,12 +116,7 @@ extern void		swapext_init(void);
 extern void		sync_init(void);
 extern void		truncate_init(void);
 extern void		utimes_init(void);
-
-#ifdef HAVE_FADVISE
 extern void		fadvise_init(void);
-#else
-#define fadvise_init()	do { } while (0)
-#endif
 
 #ifdef HAVE_SENDFILE
 extern void		sendfile_init(void);
diff --git a/m4/package_libcdev.m4 b/m4/package_libcdev.m4
index 5d947a024..53d19a1b6 100644
--- a/m4/package_libcdev.m4
+++ b/m4/package_libcdev.m4
@@ -1,21 +1,3 @@
-# 
-# Check if we have a working fadvise system call
-#
-AC_DEFUN([AC_HAVE_FADVISE],
-  [ AC_MSG_CHECKING([for fadvise ])
-    AC_COMPILE_IFELSE(
-    [	AC_LANG_PROGRAM([[
-#define _GNU_SOURCE
-#include <fcntl.h>
-	]], [[
-posix_fadvise(0, 1, 0, POSIX_FADV_NORMAL);
-	]])
-    ],	have_fadvise=yes
-	AC_MSG_RESULT(yes),
-	AC_MSG_RESULT(no))
-    AC_SUBST(have_fadvise)
-  ])
-
 #
 # Check if we have a working madvise system call
 #
-- 
2.39.2





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