lkml.org 
[lkml]   [2012]   [Nov]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[patch 6/7] fs, exportfs: Add exportfs_encode_inode_fh helper
We will need this helper in the next patch to
provide a file handle for inotify marks in
/proc/pid/fdinfo output.

The patch is rather providing the way to use inodes
directly when dentry is not available (like in case
of inotify system).

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
CC: Pavel Emelyanov <xemul@parallels.com>
CC: Oleg Nesterov <oleg@redhat.com>
CC: Andrey Vagin <avagin@openvz.org>
CC: Al Viro <viro@ZenIV.linux.org.uk>
CC: Alexey Dobriyan <adobriyan@gmail.com>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: James Bottomley <jbottomley@parallels.com>
CC: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
CC: Alexey Dobriyan <adobriyan@gmail.com>
CC: Matthew Helsley <matt.helsley@gmail.com>
CC: "J. Bruce Fields" <bfields@fieldses.org>
CC: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
CC: Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk>
---
fs/exportfs/expfs.c | 19 ++++++++++++++-----
include/linux/exportfs.h | 2 ++
2 files changed, 16 insertions(+), 5 deletions(-)
Index: linux-2.6.git/fs/exportfs/expfs.c
===================================================================
--- linux-2.6.git.orig/fs/exportfs/expfs.c
+++ linux-2.6.git/fs/exportfs/expfs.c
@@ -341,10 +341,21 @@ static int export_encode_fh(struct inode
return type;
}

+int exportfs_encode_inode_fh(struct inode *inode, struct fid *fid,
+ int *max_len, struct inode *parent)
+{
+ const struct export_operations *nop = inode->i_sb->s_export_op;
+
+ if (nop && nop->encode_fh)
+ return nop->encode_fh(inode, fid->raw, max_len, parent);
+
+ return export_encode_fh(inode, fid, max_len, parent);
+}
+EXPORT_SYMBOL_GPL(exportfs_encode_inode_fh);
+
int exportfs_encode_fh(struct dentry *dentry, struct fid *fid, int *max_len,
int connectable)
{
- const struct export_operations *nop = dentry->d_sb->s_export_op;
int error;
struct dentry *p = NULL;
struct inode *inode = dentry->d_inode, *parent = NULL;
@@ -357,10 +368,8 @@ int exportfs_encode_fh(struct dentry *de
*/
parent = p->d_inode;
}
- if (nop && nop->encode_fh)
- error = nop->encode_fh(inode, fid->raw, max_len, parent);
- else
- error = export_encode_fh(inode, fid, max_len, parent);
+
+ error = exportfs_encode_inode_fh(inode, fid, max_len, parent);
dput(p);

return error;
Index: linux-2.6.git/include/linux/exportfs.h
===================================================================
--- linux-2.6.git.orig/include/linux/exportfs.h
+++ linux-2.6.git/include/linux/exportfs.h
@@ -177,6 +177,8 @@ struct export_operations {
int (*commit_metadata)(struct inode *inode);
};

+extern int exportfs_encode_inode_fh(struct inode *inode, struct fid *fid,
+ int *max_len, struct inode *parent);
extern int exportfs_encode_fh(struct dentry *dentry, struct fid *fid,
int *max_len, int connectable);
extern struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,


\
 
 \ /
  Last update: 2012-11-14 17:21    [W:0.115 / U:0.308 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site