}
#endif
-/**
- * v9fs_get_inode - helper function to setup an inode
- * @sb: superblock
- * @mode: mode to setup inode with
- *
- */
-
-struct inode *v9fs_get_inode(struct super_block *sb, int mode)
+int v9fs_init_inode(struct v9fs_session_info *v9ses,
+ struct inode *inode, int mode)
{
- int err;
- struct inode *inode;
- struct v9fs_session_info *v9ses = sb->s_fs_info;
-
- P9_DPRINTK(P9_DEBUG_VFS, "super block: %p mode: %o\n", sb, mode);
-
- inode = new_inode(sb);
- if (!inode) {
- P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n");
- return ERR_PTR(-ENOMEM);
- }
+ int err = 0;
inode_init_owner(inode, NULL, mode);
inode->i_blocks = 0;
case S_IFREG:
if (v9fs_proto_dotl(v9ses)) {
inode->i_op = &v9fs_file_inode_operations_dotl;
- inode->i_fop = &v9fs_file_operations_dotl;
+ if (v9ses->cache)
+ inode->i_fop =
+ &v9fs_cached_file_operations_dotl;
+ else
+ inode->i_fop = &v9fs_file_operations_dotl;
} else {
inode->i_op = &v9fs_file_inode_operations;
- inode->i_fop = &v9fs_file_operations;
+ if (v9ses->cache)
+ inode->i_fop = &v9fs_cached_file_operations;
+ else
+ inode->i_fop = &v9fs_file_operations;
}
break;
-
case S_IFLNK:
if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) {
P9_DPRINTK(P9_DEBUG_ERROR, "extended modes used with "
err = -EINVAL;
goto error;
}
+error:
+ return err;
- return inode;
+}
-error:
- iput(inode);
- return ERR_PTR(err);
+/**
+ * v9fs_get_inode - helper function to setup an inode
+ * @sb: superblock
+ * @mode: mode to setup inode with
+ *
+ */
+
+struct inode *v9fs_get_inode(struct super_block *sb, int mode)
+{
+ int err;
+ struct inode *inode;
+ struct v9fs_session_info *v9ses = sb->s_fs_info;
+
+ P9_DPRINTK(P9_DEBUG_VFS, "super block: %p mode: %o\n", sb, mode);
+
+ inode = new_inode(sb);
+ if (!inode) {
+ P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ err = v9fs_init_inode(v9ses, inode, mode);
+ if (err) {
+ iput(inode);
+ return ERR_PTR(err);
+ }
+ return inode;
}
/*
#ifdef CONFIG_9P_FSCACHE
v9fs_cache_inode_put_cookie(inode);
#endif
+ /* clunk the fid stashed in inode->i_private */
+ if (inode->i_private) {
+ p9_client_clunk((struct p9_fid *)inode->i_private);
+ inode->i_private = NULL;
+ }
}
-struct inode *
-v9fs_inode(struct v9fs_session_info *v9ses, struct p9_fid *fid,
- struct super_block *sb)
+static struct inode *v9fs_qid_iget(struct super_block *sb,
+ struct p9_qid *qid,
+ struct p9_wstat *st)
{
- int err, umode;
- struct inode *ret = NULL;
- struct p9_wstat *st;
-
- st = p9_client_stat(fid);
- if (IS_ERR(st))
- return ERR_CAST(st);
+ int retval, umode;
+ unsigned long i_ino;
+ struct inode *inode;
+ struct v9fs_session_info *v9ses = sb->s_fs_info;
+ i_ino = v9fs_qid2ino(qid);
+ inode = iget_locked(sb, i_ino);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+ if (!(inode->i_state & I_NEW))
+ return inode;
+ /*
+ * initialize the inode with the stat info
+ * FIXME!! we may need support for stale inodes
+ * later.
+ */
umode = p9mode2unixmode(v9ses, st->mode);
- ret = v9fs_get_inode(sb, umode);
- if (IS_ERR(ret)) {
- err = PTR_ERR(ret);
+ retval = v9fs_init_inode(v9ses, inode, umode);
+ if (retval)
goto error;
- }
-
- v9fs_stat2inode(st, ret, sb);
- ret->i_ino = v9fs_qid2ino(&st->qid);
+ v9fs_stat2inode(st, inode, sb);
#ifdef CONFIG_9P_FSCACHE
v9fs_vcookie_set_qid(ret, &st->qid);
- v9fs_cache_inode_get_cookie(ret);
+ v9fs_cache_inode_get_cookie(inode);
#endif
- p9stat_free(st);
- kfree(st);
- return ret;
+ unlock_new_inode(inode);
+ return inode;
error:
+ unlock_new_inode(inode);
+ iput(inode);
+ return ERR_PTR(retval);
+
+}
+
+struct inode *
+v9fs_inode(struct v9fs_session_info *v9ses, struct p9_fid *fid,
+ struct super_block *sb)
+{
+ struct p9_wstat *st;
+ struct inode *inode = NULL;
+
+ st = p9_client_stat(fid);
+ if (IS_ERR(st))
+ return ERR_CAST(st);
+
+ inode = v9fs_qid_iget(sb, &st->qid, st);
p9stat_free(st);
kfree(st);
- return ERR_PTR(err);
+ return inode;
}
/**
u32 perm;
int flags;
struct v9fs_session_info *v9ses;
- struct p9_fid *fid;
+ struct p9_fid *fid, *inode_fid;
struct file *filp;
err = 0;
/* if we are opening a file, assign the open fid to the file */
if (nd && nd->flags & LOOKUP_OPEN) {
+ if (v9ses->cache && !dentry->d_inode->i_private) {
+ /*
+ * clone a fid and add it to inode->i_private
+ * we do it during open time instead of
+ * page dirty time via write_begin/page_mkwrite
+ * because we want write after unlink usecase
+ * to work.
+ */
+ inode_fid = v9fs_writeback_fid(dentry);
+ if (IS_ERR(inode_fid)) {
+ err = PTR_ERR(inode_fid);
+ goto error;
+ }
+ dentry->d_inode->i_private = (void *) inode_fid;
+ }
filp = lookup_instantiate_filp(nd, dentry, generic_file_open);
if (IS_ERR(filp)) {
err = PTR_ERR(filp);
}
filp->private_data = fid;
+#ifdef CONFIG_9P_FSCACHE
+ if (v9ses->cache)
+ v9fs_cache_inode_set_cookie(dentry->d_inode, filp);
+#endif
} else
p9_client_clunk(fid);
P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry);
err = -EPERM;
v9ses = v9fs_inode2v9ses(dentry->d_inode);
- if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
- return simple_getattr(mnt, dentry, stat);
-
+ if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
+ generic_fillattr(dentry->d_inode, stat);
+ return 0;
+ }
fid = v9fs_fid_lookup(dentry);
if (IS_ERR(fid))
return PTR_ERR(fid);
projects / deliverable / linux.git / blobdiff