NFSv4: Fix reboot recovery in copy offload
Copy offload code needs to be hooked into the code for handling
NFS4ERR_BAD_STATEID by ensuring that we set the "stateid" field
in struct nfs4_exception.
Reported-by: Olga Kornievskaia <aglo@umich.edu>
Fixes: 2e72448b07
("NFS: Add COPY nfs operation")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: stable@vger.kernel.org # v4.7+
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Родитель
df3ab232e4
Коммит
9d8cacbf56
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@ -129,30 +129,26 @@ out_unlock:
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return err;
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}
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static ssize_t _nfs42_proc_copy(struct file *src, loff_t pos_src,
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static ssize_t _nfs42_proc_copy(struct file *src,
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struct nfs_lock_context *src_lock,
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struct file *dst, loff_t pos_dst,
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struct file *dst,
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struct nfs_lock_context *dst_lock,
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size_t count)
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struct nfs42_copy_args *args,
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struct nfs42_copy_res *res)
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{
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struct nfs42_copy_args args = {
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.src_fh = NFS_FH(file_inode(src)),
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.src_pos = pos_src,
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.dst_fh = NFS_FH(file_inode(dst)),
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.dst_pos = pos_dst,
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.count = count,
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};
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struct nfs42_copy_res res;
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struct rpc_message msg = {
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.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY],
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.rpc_argp = &args,
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.rpc_resp = &res,
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.rpc_argp = args,
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.rpc_resp = res,
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};
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struct inode *dst_inode = file_inode(dst);
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struct nfs_server *server = NFS_SERVER(dst_inode);
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loff_t pos_src = args->src_pos;
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loff_t pos_dst = args->dst_pos;
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size_t count = args->count;
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int status;
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status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
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status = nfs4_set_rw_stateid(&args->src_stateid, src_lock->open_context,
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src_lock, FMODE_READ);
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if (status)
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return status;
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@ -162,7 +158,7 @@ static ssize_t _nfs42_proc_copy(struct file *src, loff_t pos_src,
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if (status)
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return status;
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status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
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status = nfs4_set_rw_stateid(&args->dst_stateid, dst_lock->open_context,
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dst_lock, FMODE_WRITE);
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if (status)
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return status;
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@ -172,22 +168,22 @@ static ssize_t _nfs42_proc_copy(struct file *src, loff_t pos_src,
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return status;
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status = nfs4_call_sync(server->client, server, &msg,
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&args.seq_args, &res.seq_res, 0);
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&args->seq_args, &res->seq_res, 0);
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if (status == -ENOTSUPP)
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server->caps &= ~NFS_CAP_COPY;
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if (status)
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return status;
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if (res.write_res.verifier.committed != NFS_FILE_SYNC) {
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status = nfs_commit_file(dst, &res.write_res.verifier.verifier);
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if (res->write_res.verifier.committed != NFS_FILE_SYNC) {
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status = nfs_commit_file(dst, &res->write_res.verifier.verifier);
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if (status)
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return status;
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}
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truncate_pagecache_range(dst_inode, pos_dst,
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pos_dst + res.write_res.count);
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pos_dst + res->write_res.count);
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return res.write_res.count;
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return res->write_res.count;
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}
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ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
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@ -197,8 +193,22 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
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struct nfs_server *server = NFS_SERVER(file_inode(dst));
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struct nfs_lock_context *src_lock;
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struct nfs_lock_context *dst_lock;
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struct nfs4_exception src_exception = { };
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struct nfs4_exception dst_exception = { };
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struct nfs42_copy_args args = {
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.src_fh = NFS_FH(file_inode(src)),
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.src_pos = pos_src,
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.dst_fh = NFS_FH(file_inode(dst)),
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.dst_pos = pos_dst,
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.count = count,
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};
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struct nfs42_copy_res res;
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struct nfs4_exception src_exception = {
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.inode = file_inode(src),
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.stateid = &args.src_stateid,
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};
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struct nfs4_exception dst_exception = {
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.inode = file_inode(dst),
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.stateid = &args.dst_stateid,
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};
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ssize_t err, err2;
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if (!nfs_server_capable(file_inode(dst), NFS_CAP_COPY))
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@ -208,7 +218,6 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
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if (IS_ERR(src_lock))
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return PTR_ERR(src_lock);
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src_exception.inode = file_inode(src);
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src_exception.state = src_lock->open_context->state;
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dst_lock = nfs_get_lock_context(nfs_file_open_context(dst));
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@ -217,15 +226,17 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
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goto out_put_src_lock;
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}
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dst_exception.inode = file_inode(dst);
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dst_exception.state = dst_lock->open_context->state;
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do {
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inode_lock(file_inode(dst));
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err = _nfs42_proc_copy(src, pos_src, src_lock,
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dst, pos_dst, dst_lock, count);
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err = _nfs42_proc_copy(src, src_lock,
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dst, dst_lock,
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&args, &res);
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inode_unlock(file_inode(dst));
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if (err >= 0)
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break;
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if (err == -ENOTSUPP) {
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err = -EOPNOTSUPP;
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break;
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