fs/btrfs/compat.h

   1 #ifndef _COMPAT_H_
   2 #define _COMPAT_H_
   3
   4 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,26)
   5 #define trylock_page(page) (!TestSetPageLocked(page))
   6 #endif
   7
   8 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,27)
   9 static inline struct dentry *d_obtain_alias(struct inode *inode)
  10 {
  11         struct dentry *d;
  12
  13         if (!inode)
  14                 return NULL;
  15         if (IS_ERR(inode))
  16                 return ERR_CAST(inode);
  17
  18         d = d_alloc_anon(inode);
  19         if (!d)
  20                 iput(inode);
  21         return d;
  22 }
  23 #endif
  24
  25 /*
  26  * Even if AppArmor isn't enabled, it still has different prototypes.
  27  * Add more distro/version pairs here to declare which has AppArmor applied.
  28  */
  29 #if defined(CONFIG_SUSE_KERNEL)
  30 # if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
  31 # define REMOVE_SUID_PATH 1
  32 # endif
  33 #endif
  34
  35 /*
  36  * catch any other distros that have patched in apparmor.  This isn't
  37  * 100% reliable because it won't catch people that hand compile their
  38  * own distro kernels without apparmor compiled in.  But, it is better
  39  * than nothing.
  40  */
  41 #ifdef CONFIG_SECURITY_APPARMOR
  42 # define REMOVE_SUID_PATH 1
  43 #endif
  44
  45 #endif /* _COMPAT_H_ */