configure: don't check for syncfs

syncfs has been supported since Linux 2.6.39.

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

diff --git a/configure.ac b/configure.ac
index b915733bf66314bc6b9bca0c20296dd6cfdb29de..4d4ce90511c239dbb0ff15204308a67e4c78f57f 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -165,7 +165,6 @@ AC_PACKAGE_NEED_RCU_INIT
 AC_HAVE_PWRITEV2
 AC_HAVE_PREADV
 AC_HAVE_COPY_FILE_RANGE
-AC_HAVE_SYNCFS
 AC_HAVE_FSETXATTR
 AC_HAVE_MREMAP
 AC_NEED_INTERNAL_FSXATTR

diff --git a/include/builddefs.in b/include/builddefs.in
index be6861e0cf59fd37081206778b32468bd23e884f..b516ba9e1ca838caa88b08a6c99633369f50616e 100644 (file)
--- a/include/builddefs.in
+++ b/include/builddefs.in
@@ -93,7 +93,6 @@ HAVE_ZIPPED_MANPAGES = @have_zipped_manpages@
 HAVE_PREADV = @have_preadv@
 HAVE_PWRITEV2 = @have_pwritev2@
 HAVE_COPY_FILE_RANGE = @have_copy_file_range@
-HAVE_SYNCFS = @have_syncfs@
 HAVE_FSETXATTR = @have_fsetxattr@
 HAVE_MREMAP = @have_mremap@
 NEED_INTERNAL_FSXATTR = @need_internal_fsxattr@

diff --git a/io/Makefile b/io/Makefile
index eb6ad05745eae243486063a88887aaf1b1603167..acef8957d69362b090e7b804b02c67aa0d070f5a 100644 (file)
--- a/io/Makefile
+++ b/io/Makefile
@@ -25,10 +25,6 @@ CFILES += copy_file_range.c
 LCFLAGS += -DHAVE_COPY_FILE_RANGE
 endif
 
-ifeq ($(HAVE_SYNCFS),yes)
-LCFLAGS += -DHAVE_SYNCFS
-endif
-
 ifeq ($(ENABLE_EDITLINE),yes)
 LLDLIBS += $(LIBEDITLINE) $(LIBTERMCAP)
 endif

diff --git a/io/sync.c b/io/sync.c
index 89f787ecd77c7924a1afd7023fac5331d5f60b23..f3b900d86ff7f4b92958fce7ad2d3da50106c01d 100644 (file)
--- a/io/sync.c
+++ b/io/sync.c
@@ -21,7 +21,6 @@ sync_f(
        return 0;
 }
 
-#ifdef HAVE_SYNCFS
 static cmdinfo_t syncfs_cmd;
 
 static int
@@ -35,7 +34,6 @@ syncfs_f(
        }
        return 0;
 }
-#endif
 
 void
 sync_init(void)
@@ -49,7 +47,6 @@ sync_init(void)
 
        add_command(&sync_cmd);
 
-#ifdef HAVE_SYNCFS
        syncfs_cmd.name = "syncfs";
        syncfs_cmd.cfunc = syncfs_f;
        syncfs_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
@@ -57,5 +54,4 @@ sync_init(void)
                _("calls syncfs(2) to flush all in-core filesystem state to disk");
 
        add_command(&syncfs_cmd);
-#endif
 }

diff --git a/m4/package_libcdev.m4 b/m4/package_libcdev.m4
index 758b9378cd60ec7dc8b4bbec2dcd9f80c757a100..37d11e3381b019bf058aa31688dd611c30cd40bf 100644 (file)
--- a/m4/package_libcdev.m4
+++ b/m4/package_libcdev.m4
@@ -54,24 +54,6 @@ syscall(__NR_copy_file_range, 0, 0, 0, 0, 0, 0);
     AC_SUBST(have_copy_file_range)
   ])
 
-#
-# Check if we have a syncfs libc call (Linux)
-#
-AC_DEFUN([AC_HAVE_SYNCFS],
-  [ AC_MSG_CHECKING([for syncfs])
-    AC_LINK_IFELSE(
-    [  AC_LANG_PROGRAM([[
-#define _GNU_SOURCE
-#include <unistd.h>
-       ]], [[
-syncfs(0);
-       ]])
-    ], have_syncfs=yes
-       AC_MSG_RESULT(yes),
-       AC_MSG_RESULT(no))
-    AC_SUBST(have_syncfs)
-  ])
-
 #
 # Check if we have a fsetxattr call
 #

diff --git a/scrub/Makefile b/scrub/Makefile
index 4368897f2ca322c55142dd521ef5187b519b7f57..f3e22a9d6282a8668100b106c1611f3a22d8d904 100644 (file)
--- a/scrub/Makefile
+++ b/scrub/Makefile
@@ -89,10 +89,6 @@ ifeq ($(HAVE_MALLINFO2),yes)
 LCFLAGS += -DHAVE_MALLINFO2
 endif
 
-ifeq ($(HAVE_SYNCFS),yes)
-LCFLAGS += -DHAVE_SYNCFS
-endif
-
 ifeq ($(HAVE_LIBATTR),yes)
 LCFLAGS += -DHAVE_LIBATTR
 endif

diff --git a/scrub/common.h b/scrub/common.h
index 865c1caa4462e03419e972d8a055709e6155b5c9..764639c06e55969c0add8840d1525b0564c8f620 100644 (file)
--- a/scrub/common.h
+++ b/scrub/common.h
@@ -74,14 +74,6 @@ double auto_units(unsigned long long number, char **units, int *precision);
 unsigned int scrub_nproc(struct scrub_ctx *ctx);
 unsigned int scrub_nproc_workqueue(struct scrub_ctx *ctx);
 
-#ifndef HAVE_SYNCFS
-static inline int syncfs(int fd)
-{
-       sync();
-       return 0;
-}
-#endif
-
 void background_sleep(void);
 char *string_escape(const char *in);