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https://github.com/torvalds/linux
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fb18a57568
This patch adds the infrastructure required to support cephfs quotas as it is currently implemented in the ceph fuse client. Cephfs quotas can be set on any directory, and can restrict the number of bytes or the number of files stored beneath that point in the directory hierarchy. Quotas are set using the extended attributes 'ceph.quota.max_files' and 'ceph.quota.max_bytes', and can be removed by setting these attributes to '0'. Link: http://tracker.ceph.com/issues/22372 Signed-off-by: Luis Henriques <lhenriques@suse.com> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* quota.c - CephFS quota
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*
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* Copyright (C) 2017-2018 SUSE
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "super.h"
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#include "mds_client.h"
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void ceph_handle_quota(struct ceph_mds_client *mdsc,
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struct ceph_mds_session *session,
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struct ceph_msg *msg)
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{
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struct super_block *sb = mdsc->fsc->sb;
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struct ceph_mds_quota *h = msg->front.iov_base;
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struct ceph_vino vino;
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struct inode *inode;
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struct ceph_inode_info *ci;
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if (msg->front.iov_len != sizeof(*h)) {
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pr_err("%s corrupt message mds%d len %d\n", __func__,
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session->s_mds, (int)msg->front.iov_len);
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ceph_msg_dump(msg);
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return;
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}
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/* increment msg sequence number */
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mutex_lock(&session->s_mutex);
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session->s_seq++;
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mutex_unlock(&session->s_mutex);
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/* lookup inode */
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vino.ino = le64_to_cpu(h->ino);
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vino.snap = CEPH_NOSNAP;
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inode = ceph_find_inode(sb, vino);
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if (!inode) {
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pr_warn("Failed to find inode %llu\n", vino.ino);
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return;
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}
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ci = ceph_inode(inode);
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spin_lock(&ci->i_ceph_lock);
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ci->i_rbytes = le64_to_cpu(h->rbytes);
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ci->i_rfiles = le64_to_cpu(h->rfiles);
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ci->i_rsubdirs = le64_to_cpu(h->rsubdirs);
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ci->i_max_bytes = le64_to_cpu(h->max_bytes);
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ci->i_max_files = le64_to_cpu(h->max_files);
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spin_unlock(&ci->i_ceph_lock);
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iput(inode);
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}
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