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authorDavid Chinner <david@fromorbit.com>2008-08-13 15:45:15 +1000
committerLachlan McIlroy <lachlan@redback.melbourne.sgi.com>2008-08-13 15:45:15 +1000
commit016516462575d28fab3354f762cad16c86c09116 (patch)
treeef644fe09f5eb963df28ad7e7bda3d547cae46d1 /fs/xfs/xfs_inode.h
parent3790689fa3c771bba6bafb7dee3e8389dd0b55bc (diff)
downloadop-kernel-dev-016516462575d28fab3354f762cad16c86c09116.zip
op-kernel-dev-016516462575d28fab3354f762cad16c86c09116.tar.gz
[XFS] Avoid directly referencing the VFS inode.
In several places we directly convert from the XFS inode to the linux (VFS) inode by a simple deference of ip->i_vnode. We should not do this - a helper function should be used to extract the VFS inode from the XFS inode. Introduce the function VFS_I() to extract the VFS inode from the XFS inode. The name was chosen to match XFS_I() which is used to extract the XFS inode from the VFS inode. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31720a Signed-off-by: David Chinner <david@fromorbit.com> Signed-off-by: Niv Sardi <xaiki@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_inode.h')
-rw-r--r--fs/xfs/xfs_inode.h22
1 files changed, 19 insertions, 3 deletions
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 17a04b6..4a5e48c 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -263,6 +263,25 @@ typedef struct xfs_inode {
#define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \
(ip)->i_size : (ip)->i_d.di_size;
+/* Convert from vfs inode to xfs inode */
+static inline struct xfs_inode *XFS_I(struct inode *inode)
+{
+ return (struct xfs_inode *)inode->i_private;
+}
+
+static inline struct xfs_inode *xfs_vtoi(bhv_vnode_t *vp)
+{
+ return XFS_I((struct inode *)vp);
+}
+
+/* convert from xfs inode to vfs inode */
+static inline struct inode *VFS_I(struct xfs_inode *ip)
+{
+ return (struct inode *)ip->i_vnode;
+}
+#define XFS_ITOV(ip) VFS_I(ip)
+#define XFS_ITOV_NULL(ip) VFS_I(ip)
+
/*
* i_flags helper functions
*/
@@ -439,9 +458,6 @@ xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags)
#define XFS_ITRUNC_DEFINITE 0x1
#define XFS_ITRUNC_MAYBE 0x2
-#define XFS_ITOV(ip) ((ip)->i_vnode)
-#define XFS_ITOV_NULL(ip) ((ip)->i_vnode)
-
/*
* For multiple groups support: if S_ISGID bit is set in the parent
* directory, group of new file is set to that of the parent, and
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