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Linux 3.9 compat: vfs_getattr takes two arguments

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The function prototype of vfs_getattr previoulsy took struct vfsmount *
and struct dentry * as arguments. These would always be defined together
in a struct path *.

torvalds/linux@3dadecce20 modified
vfs_getattr to take struct path * is taken as an argument instead.

Signed-off-by: Richard Yao <ryao@cs.stonybrook.edu>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Richard Yao 2013-03-04 00:02:43 -05:00 committed by Brian Behlendorf
parent bc90df6688
commit 2a305c34c8
2 changed files with 47 additions and 2 deletions
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32
config/spl-build.m4
View File

@ -89,6 +89,7 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [
SPL_AC_SHRINK_CONTROL_STRUCT
SPL_AC_RWSEM_SPINLOCK_IS_RAW
SPL_AC_SCHED_RT_HEADER
SPL_AC_2ARGS_VFS_GETATTR
])
AC_DEFUN([SPL_AC_MODULE_SYMVERS], [
@ -2237,3 +2238,34 @@ AC_DEFUN([SPL_AC_SCHED_RT_HEADER],
AC_MSG_RESULT(no)
])
])
dnl #
dnl # 3.9 API change,
dnl # vfs_getattr() uses 2 args
dnl # It takes struct path * instead of struct vfsmount * and struct dentry *
dnl #
AC_DEFUN([SPL_AC_2ARGS_VFS_GETATTR], [
AC_MSG_CHECKING([whether vfs_getattr() wants])
SPL_LINUX_TRY_COMPILE([
#include <linux/fs.h>
],[
vfs_getattr((struct path *) NULL,
(struct kstat *)NULL);
],[
AC_MSG_RESULT(2 args)
AC_DEFINE(HAVE_2ARGS_VFS_GETATTR, 1,
[vfs_getattr wants 2 args])
],[
SPL_LINUX_TRY_COMPILE([
#include <linux/fs.h>
],[
vfs_getattr((struct vfsmount *)NULL,
(struct dentry *)NULL,
(struct kstat *)NULL);
],[
AC_MSG_RESULT(3 args)
],[
AC_MSG_ERROR(unknown)
])
])
])

17
module/spl/spl-vnode.c
View File

@ -175,7 +175,11 @@ vn_open(const char *path, uio_seg_t seg, int flags, int mode,
if (IS_ERR(fp))
SRETURN(-PTR_ERR(fp));
#ifdef HAVE_2ARGS_VFS_GETATTR
rc = vfs_getattr(&fp->f_path, &stat);
#else
rc = vfs_getattr(fp->f_path.mnt, fp->f_dentry, &stat);
#endif
if (rc) {
filp_close(fp, 0);
SRETURN(-rc);
@ -602,7 +606,11 @@ vn_getattr(vnode_t *vp, vattr_t *vap, int flags, void *x3, void *x4)
fp = vp->v_file;
rc = vfs_getattr(fp->f_path.mnt, fp->f_dentry, &stat);
#ifdef HAVE_2ARGS_VFS_GETATTR
rc = vfs_getattr(&fp->f_path, &stat);
#else
rc = vfs_getattr(fp->f_path.mnt, fp->f_dentry, &stat);
#endif
if (rc)
SRETURN(-rc);
@ -754,7 +762,12 @@ vn_getf(int fd)
if (vp == NULL)
SGOTO(out_fget, rc);
if (vfs_getattr(lfp->f_path.mnt, lfp->f_dentry, &stat))
#ifdef HAVE_2ARGS_VFS_GETATTR
rc = vfs_getattr(&lfp->f_path, &stat);
#else
rc = vfs_getattr(lfp->f_path.mnt, lfp->f_dentry, &stat);
#endif
if (rc)
SGOTO(out_vnode, rc);
mutex_enter(&vp->v_lock);