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Linux 2.6.35 compat, const struct xattr_handler

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The const keyword was added to the 'struct xattr_handler' in the
generic Linux super_block structure.  To handle this we define an
appropriate xattr_handler_t typedef which can be used.  This was
the preferred solution because it keeps the code clean and readable.
This commit is contained in:
Brian Behlendorf
2011-02-10 16:16:52 -08:00
parent 1b94c25ceb
commit 777d4af891
52 changed files with 284 additions and 5 deletions
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config/kernel-xattr-handler.m4
+32
View File
@@ -0,0 +1,32 @@
dnl #
dnl # 2.6.35 API change,
dnl # The 'struct xattr_handler' was constified in the generic
dnl # super_block structure.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_CONST_XATTR_HANDLER],
[AC_MSG_CHECKING([whether super_block uses const struct xattr_hander])
ZFS_LINUX_TRY_COMPILE([
#include <linux/fs.h>
#include <linux/xattr.h>
const struct xattr_handler xattr_test_handler = {
.prefix = "test",
.get = NULL,
.set = NULL,
};
const struct xattr_handler *xattr_handlers[] = {
&xattr_test_handler,
};
],[
struct super_block sb;
sb.s_xattr = xattr_handlers;
],[
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_CONST_XATTR_HANDLER, 1,
[super_block uses const struct xattr_hander])
],[
AC_MSG_RESULT([no])
])
])