From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DF91AC433F5 for ; Wed, 27 Apr 2022 14:32:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238048AbiD0Ofw (ORCPT ); Wed, 27 Apr 2022 10:35:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37412 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238010AbiD0Ofs (ORCPT ); Wed, 27 Apr 2022 10:35:48 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E827C1B9; Wed, 27 Apr 2022 07:32:36 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 829BF21122; Wed, 27 Apr 2022 14:32:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1651069955; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=i/KJP+44iudIC+WcuC2nIb/z3EQuXQtWQd5UTDcPQTs=; b=RyET7+oNDgi2ZXLUior/Ne6UXO3HdPEr07aDMFH4PtpAOpP33zyVDEVHUp3HW8avYVOozI rN7+AWuDvBTed8b2tAe3vggF78CQ3Ie9N84F/fEa4pTI58mhVh78XlNp2EUcIWo64jHukY xkBUnJMQxfVKEDTVQSNIExJCxjrvkXI= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1651069955; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=i/KJP+44iudIC+WcuC2nIb/z3EQuXQtWQd5UTDcPQTs=; b=jfY/6Nt5pZVzjT3TDrhJQmX8pEeTBvelR36nJbujlnPKjT1eyNCefX46jFb5D/rK4IE0kB Z85PtwNW9yJaAFCg== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 1525013A39; Wed, 27 Apr 2022 14:32:35 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id xUJlAgNUaWIKeQAAMHmgww (envelope-from ); Wed, 27 Apr 2022 14:32:35 +0000 Received: from localhost (brahms.olymp [local]) by brahms.olymp (OpenSMTPD) with ESMTPA id 8dfb1ff8; Wed, 27 Apr 2022 14:33:05 +0000 (UTC) From: =?UTF-8?q?Lu=C3=ADs=20Henriques?= To: Jeff Layton , Xiubo Li , Ilya Dryomov Cc: ceph-devel@vger.kernel.org, linux-kernel@vger.kernel.org, =?UTF-8?q?Lu=C3=ADs=20Henriques?= , Ryan Taylor Subject: [PATCH v2] ceph: fix statfs for subdir mounts Date: Wed, 27 Apr 2022 15:33:03 +0100 Message-Id: <20220427143303.950-1-lhenriques@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When doing a mount using as base a directory that has 'max_bytes' quotas statfs uses that value as the total; if a subdirectory is used instead, the same 'max_bytes' too in statfs, unless there is another quota set. Unfortunately, if this subdirectory only has the 'max_files' quota set, then statfs uses the filesystem total. Fix this by making sure we only lookup realms that contain the 'max_bytes' quota. Link: https://tracker.ceph.com/issues/55090 Cc: Ryan Taylor Signed-off-by: Luís Henriques --- As I mentioned in v1, I do *not* think this really fixes the tracker above, as the bug reporter never mentioned setting quotas in the subdir. Changes since v1: Moved some more logic into __ceph_has_any_quota() function. fs/ceph/inode.c | 2 +- fs/ceph/quota.c | 19 +++++++++++-------- fs/ceph/super.h | 28 ++++++++++++++++++++++++---- 3 files changed, 36 insertions(+), 13 deletions(-) diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 5de7bb9048b7..4b7406d6fbe4 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -691,7 +691,7 @@ void ceph_evict_inode(struct inode *inode) __ceph_remove_caps(ci); - if (__ceph_has_any_quota(ci)) + if (__ceph_has_any_quota(ci, QUOTA_GET_ANY)) ceph_adjust_quota_realms_count(inode, false); /* diff --git a/fs/ceph/quota.c b/fs/ceph/quota.c index a338a3ec0dc4..e9f7ca18cdb7 100644 --- a/fs/ceph/quota.c +++ b/fs/ceph/quota.c @@ -195,9 +195,9 @@ void ceph_cleanup_quotarealms_inodes(struct ceph_mds_client *mdsc) /* * This function walks through the snaprealm for an inode and returns the - * ceph_snap_realm for the first snaprealm that has quotas set (either max_files - * or max_bytes). If the root is reached, return the root ceph_snap_realm - * instead. + * ceph_snap_realm for the first snaprealm that has quotas set (max_files, + * max_bytes, or any, depending on the 'which_quota' argument). If the root is + * reached, return the root ceph_snap_realm instead. * * Note that the caller is responsible for calling ceph_put_snap_realm() on the * returned realm. @@ -209,7 +209,9 @@ void ceph_cleanup_quotarealms_inodes(struct ceph_mds_client *mdsc) * will be restarted. */ static struct ceph_snap_realm *get_quota_realm(struct ceph_mds_client *mdsc, - struct inode *inode, bool retry) + struct inode *inode, + enum quota_get_realm which_quota, + bool retry) { struct ceph_inode_info *ci = NULL; struct ceph_snap_realm *realm, *next; @@ -248,7 +250,7 @@ static struct ceph_snap_realm *get_quota_realm(struct ceph_mds_client *mdsc, } ci = ceph_inode(in); - has_quota = __ceph_has_any_quota(ci); + has_quota = __ceph_has_any_quota(ci, which_quota); iput(in); next = realm->parent; @@ -279,8 +281,8 @@ bool ceph_quota_is_same_realm(struct inode *old, struct inode *new) * dropped and we can then restart the whole operation. */ down_read(&mdsc->snap_rwsem); - old_realm = get_quota_realm(mdsc, old, true); - new_realm = get_quota_realm(mdsc, new, false); + old_realm = get_quota_realm(mdsc, old, QUOTA_GET_ANY, true); + new_realm = get_quota_realm(mdsc, new, QUOTA_GET_ANY, false); if (PTR_ERR(new_realm) == -EAGAIN) { up_read(&mdsc->snap_rwsem); if (old_realm) @@ -483,7 +485,8 @@ bool ceph_quota_update_statfs(struct ceph_fs_client *fsc, struct kstatfs *buf) bool is_updated = false; down_read(&mdsc->snap_rwsem); - realm = get_quota_realm(mdsc, d_inode(fsc->sb->s_root), true); + realm = get_quota_realm(mdsc, d_inode(fsc->sb->s_root), + QUOTA_GET_MAX_BYTES, true); up_read(&mdsc->snap_rwsem); if (!realm) return false; diff --git a/fs/ceph/super.h b/fs/ceph/super.h index a2e1c83ab29a..3cd96720f14a 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -1317,9 +1317,29 @@ extern void ceph_fs_debugfs_init(struct ceph_fs_client *client); extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); /* quota.c */ -static inline bool __ceph_has_any_quota(struct ceph_inode_info *ci) + +enum quota_get_realm { + QUOTA_GET_MAX_FILES, + QUOTA_GET_MAX_BYTES, + QUOTA_GET_ANY +}; + +static inline bool __ceph_has_any_quota(struct ceph_inode_info *ci, + enum quota_get_realm which) { - return ci->i_max_files || ci->i_max_bytes; + bool has_quota = false; + + switch (which) { + case QUOTA_GET_MAX_BYTES: + has_quota = !!ci->i_max_bytes; + break; + case QUOTA_GET_MAX_FILES: + has_quota = !!ci->i_max_files; + break; + default: + has_quota = !!(ci->i_max_files || ci->i_max_bytes); + } + return has_quota; } extern void ceph_adjust_quota_realms_count(struct inode *inode, bool inc); @@ -1328,10 +1348,10 @@ static inline void __ceph_update_quota(struct ceph_inode_info *ci, u64 max_bytes, u64 max_files) { bool had_quota, has_quota; - had_quota = __ceph_has_any_quota(ci); + had_quota = __ceph_has_any_quota(ci, QUOTA_GET_ANY); ci->i_max_bytes = max_bytes; ci->i_max_files = max_files; - has_quota = __ceph_has_any_quota(ci); + has_quota = __ceph_has_any_quota(ci, QUOTA_GET_ANY); if (had_quota != has_quota) ceph_adjust_quota_realms_count(&ci->vfs_inode, has_quota);