From be6e8dc0ba84029997075a1ec77b4ddb863cbe15 Mon Sep 17 00:00:00 2001 From: Balaji Rao Date: Mon, 21 Jul 2008 02:01:56 +0530 Subject: 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 Signed-off-by: David Woodhouse Signed-off-by: Chris Mason --- fs/btrfs/compat.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'fs/btrfs/compat.h') diff --git a/fs/btrfs/compat.h b/fs/btrfs/compat.h index b3349a66999d..d45fb37887bc 100644 --- a/fs/btrfs/compat.h +++ b/fs/btrfs/compat.h @@ -5,6 +5,23 @@ #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. -- cgit v1.2.3