NFSv4: Clean up nfs4_open_revalidate
Remove references to 'struct nameidata' from the low-level open_revalidate code, and replace them with a struct nfs_open_context which will be correctly initialised upon success. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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parent
f46e0bd34e
commit
b8d4caddd8
3 changed files with 17 additions and 19 deletions
11
fs/nfs/dir.c
11
fs/nfs/dir.c
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@ -1169,6 +1169,7 @@ static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd)
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struct dentry *parent = NULL;
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struct inode *inode = dentry->d_inode;
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struct inode *dir;
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struct nfs_open_context *ctx;
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int openflags, ret = 0;
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if (!is_atomic_open(nd) || d_mountpoint(dentry))
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@ -1194,12 +1195,20 @@ static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd)
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/* We can't create new files, or truncate existing ones here */
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openflags &= ~(O_CREAT|O_EXCL|O_TRUNC);
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ctx = nameidata_to_nfs_open_context(dentry, nd);
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ret = PTR_ERR(ctx);
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if (IS_ERR(ctx))
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goto out;
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/*
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* Note: we're not holding inode->i_mutex and so may be racing with
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* operations that change the directory. We therefore save the
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* change attribute *before* we do the RPC call.
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*/
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ret = nfs4_open_revalidate(dir, dentry, openflags, nd);
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ret = nfs4_open_revalidate(dir, ctx, openflags);
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if (ret == 1)
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nfs_intent_set_file(nd, ctx);
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else
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put_nfs_open_context(ctx);
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out:
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dput(parent);
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if (!ret)
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@ -243,7 +243,7 @@ extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *);
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extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *);
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extern int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait);
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extern struct inode *nfs4_atomic_open(struct inode *, struct nfs_open_context *, int, struct iattr *);
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extern int nfs4_open_revalidate(struct inode *, struct dentry *, int, struct nameidata *);
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extern int nfs4_open_revalidate(struct inode *, struct nfs_open_context *, int);
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extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle);
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extern int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
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struct nfs4_fs_locations *fs_locations, struct page *page);
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@ -2038,21 +2038,11 @@ nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags
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}
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int
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nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd)
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nfs4_open_revalidate(struct inode *dir, struct nfs_open_context *ctx, int openflags)
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{
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struct path path = {
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.mnt = nd->path.mnt,
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.dentry = dentry,
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};
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struct rpc_cred *cred;
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struct nfs4_state *state;
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fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE);
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cred = rpc_lookup_cred();
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if (IS_ERR(cred))
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return PTR_ERR(cred);
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state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred);
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put_rpccred(cred);
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state = nfs4_do_open(dir, &ctx->path, ctx->mode, openflags, NULL, ctx->cred);
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if (IS_ERR(state)) {
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switch (PTR_ERR(state)) {
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case -EPERM:
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@ -2065,14 +2055,13 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
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goto out_drop;
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}
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}
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if (state->inode == dentry->d_inode) {
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nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
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nfs4_intent_set_file(nd, &path, state, fmode);
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ctx->state = state;
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if (state->inode == ctx->path.dentry->d_inode) {
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nfs_set_verifier(ctx->path.dentry, nfs_save_change_attribute(dir));
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return 1;
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}
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nfs4_close_sync(&path, state, fmode);
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out_drop:
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d_drop(dentry);
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d_drop(ctx->path.dentry);
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return 0;
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}
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