AcoSail/kernel_optimize_test
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9p: untangle ->lookup() a bit

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-02-28 01:28:21 -05:00
parent 3509b678a6
commit 7b5be62199
1 changed files with 9 additions and 18 deletions
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25
fs/9p/vfs_inode.c
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@ -788,7 +788,6 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
struct p9_fid *dfid, *fid;
struct inode *inode;
char *name;
int result = 0;
p9_debug(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p flags: %x\n",
dir, dentry->d_name.name, dentry, flags);
@ -806,13 +805,11 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
name = (char *) dentry->d_name.name;
fid = p9_client_walk(dfid, 1, &name, 1);
if (IS_ERR(fid)) {
result = PTR_ERR(fid);
if (result == -ENOENT) {
inode = NULL;
goto inst_out;
if (fid == ERR_PTR(-ENOENT)) {
d_add(dentry, NULL);
return NULL;
}
return ERR_PTR(result);
return ERR_CAST(fid);
}
/*
* Make sure we don't use a wrong inode due to parallel
@ -824,12 +821,10 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
else
inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
if (IS_ERR(inode)) {
result = PTR_ERR(inode);
inode = NULL;
goto error;
p9_client_clunk(fid);
return ERR_CAST(inode);
}
v9fs_fid_add(dentry, fid);
inst_out:
/*
* If we had a rename on the server and a parallel lookup
* for the new name, then make sure we instantiate with
@ -838,13 +833,9 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
* k/b.
*/
res = d_materialise_unique(dentry, inode);
if (!IS_ERR(res))
return res;
result = PTR_ERR(res);
error:
if (IS_ERR(res))
p9_client_clunk(fid);
return ERR_PTR(result);
return res;
}
static int