NFS: Don't redirty the attribute cache in nfs_wcc_update_inode()
If we received weak cache consistency data from the server, then those attributes are up to date, and there is no reason to mark them as dirty in the attribute cache. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Родитель
8619ddd07b
Коммит
783b194c6e
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@ -1303,24 +1303,20 @@ static bool nfs_file_has_buffered_writers(struct nfs_inode *nfsi)
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return nfs_file_has_writers(nfsi) && nfs_file_io_is_buffered(nfsi);
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}
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static unsigned long nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr)
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static void nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr)
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{
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unsigned long ret = 0;
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if ((fattr->valid & NFS_ATTR_FATTR_PRECHANGE)
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&& (fattr->valid & NFS_ATTR_FATTR_CHANGE)
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&& inode_eq_iversion_raw(inode, fattr->pre_change_attr)) {
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inode_set_iversion_raw(inode, fattr->change_attr);
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if (S_ISDIR(inode->i_mode))
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nfs_set_cache_invalid(inode, NFS_INO_INVALID_DATA);
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ret |= NFS_INO_INVALID_ATTR;
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}
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/* If we have atomic WCC data, we may update some attributes */
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if ((fattr->valid & NFS_ATTR_FATTR_PRECTIME)
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&& (fattr->valid & NFS_ATTR_FATTR_CTIME)
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&& timespec_equal(&inode->i_ctime, &fattr->pre_ctime)) {
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memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
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ret |= NFS_INO_INVALID_ATTR;
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}
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if ((fattr->valid & NFS_ATTR_FATTR_PREMTIME)
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@ -1329,17 +1325,13 @@ static unsigned long nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr
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memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
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if (S_ISDIR(inode->i_mode))
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nfs_set_cache_invalid(inode, NFS_INO_INVALID_DATA);
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ret |= NFS_INO_INVALID_ATTR;
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}
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if ((fattr->valid & NFS_ATTR_FATTR_PRESIZE)
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&& (fattr->valid & NFS_ATTR_FATTR_SIZE)
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&& i_size_read(inode) == nfs_size_to_loff_t(fattr->pre_size)
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&& !nfs_have_writebacks(inode)) {
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i_size_write(inode, nfs_size_to_loff_t(fattr->size));
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ret |= NFS_INO_INVALID_ATTR;
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}
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return ret;
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}
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/**
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@ -1789,7 +1781,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
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| NFS_INO_REVAL_PAGECACHE);
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/* Do atomic weak cache consistency updates */
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invalid |= nfs_wcc_update_inode(inode, fattr);
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nfs_wcc_update_inode(inode, fattr);
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if (pnfs_layoutcommit_outstanding(inode)) {
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nfsi->cache_validity |= save_cache_validity & NFS_INO_INVALID_ATTR;
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