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Linux 3.6 compat, iops->create()

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As of Linux commit ebfc3b49a7ac25920cb5be5445f602e51d2ea559 the
struct nameidata is no longer passed to iops->create.  Instead
only the result of (inamedata->flags & LOOKUP_EXCL) is passed.

ZFS like almost all Linux fileystems never made use of this so
only the prototype needs to be wrapped for compatibility.

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #873
This commit is contained in:
Yuxuan Shui 2012-10-12 23:20:58 +08:00 committed by Brian Behlendorf
parent 8f195a908f
commit 558ef6d080
3 changed files with 32 additions and 0 deletions
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26
config/kernel-create-nameidata.m4 Normal file
View File

@ -0,0 +1,26 @@
dnl #
dnl # 3.6 API change
dnl #
AC_DEFUN([ZFS_AC_KERNEL_CREATE_NAMEIDATA], [
AC_MSG_CHECKING([whether iops->create() takes struct nameidata])
ZFS_LINUX_TRY_COMPILE([
#include <linux/fs.h>
],[
#ifdef HAVE_MKDIR_UMODE_T
int (*inode_create) (struct inode *,struct dentry *,
umode_t, struct nameidata *) = NULL;
#else
int (*inode_create) (struct inode *,struct dentry *,
int, struct nameidata *) = NULL;
#endif
struct inode_operations iops __attribute__ ((unused)) = {
.create = inode_create,
};
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_CREATE_NAMEIDATA, 1,
[iops->create() operation takes nameidata])
],[
AC_MSG_RESULT(no)
])
])

1
config/kernel.m4
View File

@ -50,6 +50,7 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
ZFS_AC_KERNEL_FREE_CACHED_OBJECTS
ZFS_AC_KERNEL_FALLOCATE
ZFS_AC_KERNEL_LOOKUP_NAMEIDATA
ZFS_AC_KERNEL_CREATE_NAMEIDATA
ZFS_AC_KERNEL_TRUNCATE_RANGE
ZFS_AC_KERNEL_CREATE_UMODE_T
ZFS_AC_KERNEL_AUTOMOUNT

5
module/zfs/zpl_inode.c
View File

@ -75,8 +75,13 @@ zpl_vap_init(vattr_t *vap, struct inode *dir, struct dentry *dentry,
}
static int
#ifdef HAVE_CREATE_NAMEIDATA
zpl_create(struct inode *dir, struct dentry *dentry, zpl_umode_t mode,
struct nameidata *nd)
#else
zpl_create(struct inode *dir, struct dentry *dentry, zpl_umode_t mode,
bool flag)
#endif
{
cred_t *cr = CRED();
struct inode *ip;