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fs/9p: Always ask new inode in create

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This make sure we don't end up reusing the unlinked inode object.
The ideal way is to use inode i_generation. But i_generation is
not available in userspace always.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
This commit is contained in:
Aneesh Kumar K.V
2011-07-06 16:32:31 +05:30
committed by Eric Van Hensbergen
parent 4d63055fa9
commit ed80fcfac2
3 changed files with 61 additions and 18 deletions
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27
fs/9p/v9fs.h
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@@ -153,13 +153,13 @@ extern void v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd,
void *p);
extern struct inode *v9fs_inode_from_fid(struct v9fs_session_info *v9ses,
struct p9_fid *fid,
struct super_block *sb);
struct super_block *sb, int new);
extern const struct inode_operations v9fs_dir_inode_operations_dotl;
extern const struct inode_operations v9fs_file_inode_operations_dotl;
extern const struct inode_operations v9fs_symlink_inode_operations_dotl;
extern struct inode *v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses,
struct p9_fid *fid,
struct super_block *sb);
struct super_block *sb, int new);
/* other default globals */
#define V9FS_PORT 564
@@ -201,8 +201,27 @@ v9fs_get_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid,
struct super_block *sb)
{
if (v9fs_proto_dotl(v9ses))
return v9fs_inode_from_fid_dotl(v9ses, fid, sb);
return v9fs_inode_from_fid_dotl(v9ses, fid, sb, 0);
else
return v9fs_inode_from_fid(v9ses, fid, sb);
return v9fs_inode_from_fid(v9ses, fid, sb, 0);
}
/**
* v9fs_get_new_inode_from_fid - Helper routine to populate an inode by
* issuing a attribute request
* @v9ses: session information
* @fid: fid to issue attribute request for
* @sb: superblock on which to create inode
*
*/
static inline struct inode *
v9fs_get_new_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid,
struct super_block *sb)
{
if (v9fs_proto_dotl(v9ses))
return v9fs_inode_from_fid_dotl(v9ses, fid, sb, 1);
else
return v9fs_inode_from_fid(v9ses, fid, sb, 1);
}
#endif