linux/fs/btrfs/compat.h
Balaji Rao be6e8dc0ba NFS support for btrfs - v3
Date: Mon, 21 Jul 2008 02:01:56 +0530
Here's an implementation of NFS support for btrfs. It relies on the
fixes which are going in to 2.6.28 for the NFS readdir/lookup deadlock.

This uses the btrfs_iget helper introduced previously.

[dwmw2: Tidy up a little, switch to d_obtain_alias() w/compat routine,
	change fh_type,	store parent's root object ID where needed,
	fix some get_parent() and fs_to_dentry() bugs]

Signed-off-by: Balaji Rao <balajirrao@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:06 -04:00

45 lines
1 KiB
C

#ifndef _COMPAT_H_
#define _COMPAT_H_
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,26)
#define trylock_page(page) (!TestSetPageLocked(page))
#endif
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,27)
static inline struct dentry *d_obtain_alias(struct inode *inode)
{
struct dentry *d;
if (!inode)
return NULL;
if (IS_ERR(inode))
return ERR_CAST(inode);
d = d_alloc_anon(inode);
if (!d)
iput(inode);
return d;
}
#endif
/*
* Even if AppArmor isn't enabled, it still has different prototypes.
* Add more distro/version pairs here to declare which has AppArmor applied.
*/
#if defined(CONFIG_SUSE_KERNEL)
# if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
# define REMOVE_SUID_PATH 1
# endif
#endif
/*
* catch any other distros that have patched in apparmor. This isn't
* 100% reliable because it won't catch people that hand compile their
* own distro kernels without apparmor compiled in. But, it is better
* than nothing.
*/
#ifdef CONFIG_SECURITY_APPARMOR
# define REMOVE_SUID_PATH 1
#endif
#endif /* _COMPAT_H_ */