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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>
This commit is contained in:
Andy Adamson 2012-05-30 16:12:24 -04:00 committed by Trond Myklebust
parent 64f9a83665
commit 2669940db8
1 changed files with 8 additions and 4 deletions
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12
fs/nfs/nfs4proc.c
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@ -2549,6 +2549,14 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
nfs_fattr_init(fattr);
/* Deal with open(O_TRUNC) */
if (sattr->ia_valid & ATTR_OPEN)
sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN);
/* Optimization: if the end result is no change, don't RPC */
if ((sattr->ia_valid & ~(ATTR_FILE)) == 0)
return 0;
/* Search for an existing open(O_WRITE) file */
if (sattr->ia_valid & ATTR_FILE) {
struct nfs_open_context *ctx;
@ -2560,10 +2568,6 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
}
}
/* Deal with open(O_TRUNC) */
if (sattr->ia_valid & ATTR_OPEN)
sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN);
status = nfs4_do_setattr(inode, cred, fattr, sattr, state);
if (status == 0)
nfs_setattr_update_inode(inode, sattr);