NFSv4 do not send an empty SETATTR compound
Commit 536e43d12b
ATTR_OPEN check can result in
an ia_valid with only ATTR_FILE set, and no NFS_VALID_ATTRS attributes to
request from the server.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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@ -2549,6 +2549,14 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
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nfs_fattr_init(fattr);
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/* Deal with open(O_TRUNC) */
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if (sattr->ia_valid & ATTR_OPEN)
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sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN);
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/* Optimization: if the end result is no change, don't RPC */
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if ((sattr->ia_valid & ~(ATTR_FILE)) == 0)
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return 0;
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/* Search for an existing open(O_WRITE) file */
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if (sattr->ia_valid & ATTR_FILE) {
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struct nfs_open_context *ctx;
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@ -2560,10 +2568,6 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
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}
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}
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/* Deal with open(O_TRUNC) */
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if (sattr->ia_valid & ATTR_OPEN)
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sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN);
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status = nfs4_do_setattr(inode, cred, fattr, sattr, state);
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if (status == 0)
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nfs_setattr_update_inode(inode, sattr);
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