From patchwork Thu May 10 15:29:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 10391941 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 34A4D60353 for ; Thu, 10 May 2018 15:30:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 21C2828BFC for ; Thu, 10 May 2018 15:30:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1694928C00; Thu, 10 May 2018 15:30:00 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2564128BFC for ; Thu, 10 May 2018 15:29:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966093AbeEJP36 (ORCPT ); Thu, 10 May 2018 11:29:58 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:41854 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965410AbeEJP35 (ORCPT ); Thu, 10 May 2018 11:29:57 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w4AFPunX109738; Thu, 10 May 2018 15:29:38 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=subject : from : to : cc : date : message-id : in-reply-to : references : mime-version : content-type : content-transfer-encoding; s=corp-2017-10-26; bh=CNAsd89oQNghrHg7K3N9q5oH93buYqGuvIBuQnFF16s=; b=Ugfut5cv9gcppp0HEzgHFGwT5tWP14zHuHbYSuqozRUV6w5eqhR7gytXlovhNIft0nvl e/dAxDhSJ6VohEmrs/g0g6xBYBzQDQzDpvS8LrpFm3DrmXjS4kj/6xj6e0O16IruE78h Ii11+dJrmMvVt5Q5qDQcDymESHKiu4EW/1kUSlaU01RpB6pZMYrgcemz1EPw5sDiGwoC OY4XIwkfsO/TMq5ZmVatjteRiYeYd2Y1iT3qq+rbFIJiWJ9Wql1di4r3fjM7w4CrZqqf 32r/eXKtS6tMrZ+kjexSQ1XNuLwPhimdu9F5nDoLM343C9c5ZYwiYywnKivgdOA69QUz Dg== Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by userp2120.oracle.com with ESMTP id 2hv6kp47a3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 10 May 2018 15:29:38 +0000 Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by aserv0022.oracle.com (8.14.4/8.14.4) with ESMTP id w4AFTbEW027408 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 10 May 2018 15:29:37 GMT Received: from abhmp0001.oracle.com (abhmp0001.oracle.com [141.146.116.7]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id w4AFTa4B006078; Thu, 10 May 2018 15:29:36 GMT Received: from localhost (/67.169.218.210) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 10 May 2018 08:29:36 -0700 Subject: [PATCH 07/14] xfs: split out dqget for inodes from regular dqget From: "Darrick J. Wong" To: darrick.wong@oracle.com Cc: linux-xfs@vger.kernel.org, Brian Foster , hch@lst.de Date: Thu, 10 May 2018 08:29:35 -0700 Message-ID: <152596617538.27525.15959895170855226236.stgit@magnolia> In-Reply-To: <152596612549.27525.9876256551560849585.stgit@magnolia> References: <152596612549.27525.9876256551560849585.stgit@magnolia> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8888 signatures=668698 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1805100146 Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Darrick J. Wong There are two uses of dqget here -- one is to return the dquot for a given type and id, and the other is to return the dquot for a given type and inode. Those are two separate things, so split them into two smaller functions. Signed-off-by: Darrick J. Wong Reviewed-by: Brian Foster Reviewed-by: Christoph Hellwig --- fs/xfs/xfs_dquot.c | 148 ++++++++++++++++++++++++++++++++-------------- fs/xfs/xfs_dquot.h | 10 ++- fs/xfs/xfs_iomap.c | 2 - fs/xfs/xfs_qm.c | 39 +++++------- fs/xfs/xfs_qm_bhv.c | 2 - fs/xfs/xfs_qm_syscalls.c | 4 + fs/xfs/xfs_quota.h | 2 - fs/xfs/xfs_reflink.c | 4 + 8 files changed, 134 insertions(+), 77 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 1ee05e5ab1d9..376923fd2174 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -790,24 +790,19 @@ xfs_qm_dqget_checks( } /* - * Given the file system, inode OR id, and type (UDQUOT/GDQUOT), return a - * a locked dquot, doing an allocation (if requested) as needed. - * When both an inode and an id are given, the inode's id takes precedence. - * That is, if the id changes while we don't hold the ilock inside this - * function, the new dquot is returned, not necessarily the one requested - * in the id argument. + * Given the file system, id, and type (UDQUOT/GDQUOT), return a a locked + * dquot, doing an allocation (if requested) as needed. */ int xfs_qm_dqget( - xfs_mount_t *mp, - xfs_inode_t *ip, /* locked inode (optional) */ - xfs_dqid_t id, /* uid/projid/gid depending on type */ - uint type, /* XFS_DQ_USER/XFS_DQ_PROJ/XFS_DQ_GROUP */ - uint flags, /* DQALLOC, DQSUSER, DQREPAIR, DOWARN */ - xfs_dquot_t **O_dqpp) /* OUT : locked incore dquot */ + struct xfs_mount *mp, + xfs_dqid_t id, + uint type, + uint flags, /* DQALLOC, DQSUSER, DQREPAIR, DOWARN */ + struct xfs_dquot **O_dqpp) { struct xfs_quotainfo *qi = mp->m_quotainfo; - struct radix_tree_root *tree = xfs_dquot_tree(qi, type); + struct radix_tree_root *tree = xfs_dquot_tree(qi, type); struct xfs_dquot *dqp; int error; @@ -815,10 +810,82 @@ xfs_qm_dqget( if (error) return error; - if (ip) { - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - ASSERT(xfs_inode_dquot(ip, type) == NULL); +restart: + dqp = xfs_qm_dqget_cache_lookup(mp, qi, tree, id); + if (dqp) { + *O_dqpp = dqp; + return 0; + } + + error = xfs_qm_dqread(mp, id, type, flags, &dqp); + if (error) + return error; + + error = xfs_qm_dqget_cache_insert(mp, qi, tree, id, dqp); + if (error) { + /* + * Duplicate found. Just throw away the new dquot and start + * over. + */ + xfs_qm_dqdestroy(dqp); + XFS_STATS_INC(mp, xs_qm_dquot_dups); + goto restart; + } + + trace_xfs_dqget_miss(dqp); + *O_dqpp = dqp; + return 0; +} + +/* Return the quota id for a given inode and type. */ +xfs_dqid_t +xfs_qm_id_for_quotatype( + struct xfs_inode *ip, + uint type) +{ + switch (type) { + case XFS_DQ_USER: + return ip->i_d.di_uid; + case XFS_DQ_GROUP: + return ip->i_d.di_gid; + case XFS_DQ_PROJ: + return xfs_get_projid(ip); } + ASSERT(0); + return 0; +} + +/* + * Return the dquot for a given inode and type. If @can_alloc is true, then + * allocate blocks if needed. The inode's ILOCK must be held and it must not + * have already had an inode attached. + */ +int +xfs_qm_dqget_inode( + struct xfs_inode *ip, + uint type, + bool can_alloc, + struct xfs_dquot **O_dqpp) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_quotainfo *qi = mp->m_quotainfo; + struct radix_tree_root *tree = xfs_dquot_tree(qi, type); + struct xfs_dquot *dqp; + xfs_dqid_t id; + uint flags = 0; + int error; + + error = xfs_qm_dqget_checks(mp, type); + if (error) + return error; + + if (can_alloc) + flags |= XFS_QMOPT_DQALLOC; + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + ASSERT(xfs_inode_dquot(ip, type) == NULL); + + id = xfs_qm_id_for_quotatype(ip, type); restart: dqp = xfs_qm_dqget_cache_lookup(mp, qi, tree, id); @@ -834,37 +901,30 @@ xfs_qm_dqget( * lock here means dealing with a chown that can happen before * we re-acquire the lock. */ - if (ip) - xfs_iunlock(ip, XFS_ILOCK_EXCL); - + xfs_iunlock(ip, XFS_ILOCK_EXCL); error = xfs_qm_dqread(mp, id, type, flags, &dqp); - - if (ip) - xfs_ilock(ip, XFS_ILOCK_EXCL); - + xfs_ilock(ip, XFS_ILOCK_EXCL); if (error) return error; - if (ip) { - /* - * A dquot could be attached to this inode by now, since - * we had dropped the ilock. - */ - if (xfs_this_quota_on(mp, type)) { - struct xfs_dquot *dqp1; - - dqp1 = xfs_inode_dquot(ip, type); - if (dqp1) { - xfs_qm_dqdestroy(dqp); - dqp = dqp1; - xfs_dqlock(dqp); - goto dqret; - } - } else { - /* inode stays locked on return */ + /* + * A dquot could be attached to this inode by now, since we had + * dropped the ilock. + */ + if (xfs_this_quota_on(mp, type)) { + struct xfs_dquot *dqp1; + + dqp1 = xfs_inode_dquot(ip, type); + if (dqp1) { xfs_qm_dqdestroy(dqp); - return -ESRCH; + dqp = dqp1; + xfs_dqlock(dqp); + goto dqret; } + } else { + /* inode stays locked on return */ + xfs_qm_dqdestroy(dqp); + return -ESRCH; } error = xfs_qm_dqget_cache_insert(mp, qi, tree, id, dqp); @@ -878,8 +938,8 @@ xfs_qm_dqget( goto restart; } - dqret: - ASSERT((ip == NULL) || xfs_isilocked(ip, XFS_ILOCK_EXCL)); +dqret: + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); trace_xfs_dqget_miss(dqp); *O_dqpp = dqp; return 0; @@ -901,7 +961,7 @@ xfs_qm_dqget_next( *dqpp = NULL; for (; !error; error = xfs_dq_get_next_id(mp, type, &id)) { - error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp); + error = xfs_qm_dqget(mp, id, type, 0, &dqp); if (error == -ENOENT) continue; else if (error != 0) diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h index 303e71dfcf70..8a5b30e952b0 100644 --- a/fs/xfs/xfs_dquot.h +++ b/fs/xfs/xfs_dquot.h @@ -169,8 +169,14 @@ extern void xfs_qm_adjust_dqtimers(xfs_mount_t *, xfs_disk_dquot_t *); extern void xfs_qm_adjust_dqlimits(struct xfs_mount *, struct xfs_dquot *); -extern int xfs_qm_dqget(xfs_mount_t *, xfs_inode_t *, - xfs_dqid_t, uint, uint, xfs_dquot_t **); +extern xfs_dqid_t xfs_qm_id_for_quotatype(struct xfs_inode *ip, + uint type); +extern int xfs_qm_dqget(struct xfs_mount *mp, xfs_dqid_t id, + uint type, uint flags, + struct xfs_dquot **dqpp); +extern int xfs_qm_dqget_inode(struct xfs_inode *ip, uint type, + bool can_alloc, + struct xfs_dquot **dqpp); extern int xfs_qm_dqget_next(struct xfs_mount *mp, xfs_dqid_t id, uint type, struct xfs_dquot **dqpp); extern void xfs_qm_dqput(xfs_dquot_t *); diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 0880685a1143..c6ce6f9335b6 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -576,7 +576,7 @@ xfs_file_iomap_begin_delay( goto done; } - error = xfs_qm_dqattach_locked(ip, 0); + error = xfs_qm_dqattach_locked(ip, false); if (error) goto out_unlock; diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index 3893f541f88d..6122097da0b6 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -262,7 +262,7 @@ xfs_qm_dqattach_one( xfs_inode_t *ip, xfs_dqid_t id, uint type, - uint doalloc, + bool doalloc, xfs_dquot_t **IO_idqpp) { xfs_dquot_t *dqp; @@ -288,7 +288,7 @@ xfs_qm_dqattach_one( * exist on disk and we didn't ask it to allocate; ESRCH if quotas got * turned off suddenly. */ - error = xfs_qm_dqget(ip->i_mount, ip, id, type, doalloc, &dqp); + error = xfs_qm_dqget_inode(ip, type, doalloc, &dqp); if (error) return error; @@ -330,7 +330,7 @@ xfs_qm_need_dqattach( int xfs_qm_dqattach_locked( xfs_inode_t *ip, - uint flags) + bool doalloc) { xfs_mount_t *mp = ip->i_mount; int error = 0; @@ -342,8 +342,7 @@ xfs_qm_dqattach_locked( if (XFS_IS_UQUOTA_ON(mp) && !ip->i_udquot) { error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, - flags & XFS_QMOPT_DQALLOC, - &ip->i_udquot); + doalloc, &ip->i_udquot); if (error) goto done; ASSERT(ip->i_udquot); @@ -351,8 +350,7 @@ xfs_qm_dqattach_locked( if (XFS_IS_GQUOTA_ON(mp) && !ip->i_gdquot) { error = xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, - flags & XFS_QMOPT_DQALLOC, - &ip->i_gdquot); + doalloc, &ip->i_gdquot); if (error) goto done; ASSERT(ip->i_gdquot); @@ -360,8 +358,7 @@ xfs_qm_dqattach_locked( if (XFS_IS_PQUOTA_ON(mp) && !ip->i_pdquot) { error = xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, - flags & XFS_QMOPT_DQALLOC, - &ip->i_pdquot); + doalloc, &ip->i_pdquot); if (error) goto done; ASSERT(ip->i_pdquot); @@ -386,7 +383,7 @@ xfs_qm_dqattach( return 0; xfs_ilock(ip, XFS_ILOCK_EXCL); - error = xfs_qm_dqattach_locked(ip, 0); + error = xfs_qm_dqattach_locked(ip, false); xfs_iunlock(ip, XFS_ILOCK_EXCL); return error; @@ -1068,7 +1065,7 @@ xfs_qm_quotacheck_dqadjust( struct xfs_dquot *dqp; int error; - error = xfs_qm_dqget(mp, ip, id, type, XFS_QMOPT_DQALLOC, &dqp); + error = xfs_qm_dqget_inode(ip, type, true, &dqp); if (error) { /* * Shouldn't be able to turn off quotas here. @@ -1667,7 +1664,7 @@ xfs_qm_vop_dqalloc( * if necessary. The dquot(s) will not be locked. */ if (XFS_NOT_DQATTACHED(mp, ip)) { - error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); + error = xfs_qm_dqattach_locked(ip, true); if (error) { xfs_iunlock(ip, lockflags); return error; @@ -1686,10 +1683,8 @@ xfs_qm_vop_dqalloc( * holding ilock. */ xfs_iunlock(ip, lockflags); - error = xfs_qm_dqget(mp, NULL, uid, - XFS_DQ_USER, - XFS_QMOPT_DQALLOC, - &uq); + error = xfs_qm_dqget(mp, uid, XFS_DQ_USER, + XFS_QMOPT_DQALLOC, &uq); if (error) { ASSERT(error != -ENOENT); return error; @@ -1712,10 +1707,8 @@ xfs_qm_vop_dqalloc( if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { if (ip->i_d.di_gid != gid) { xfs_iunlock(ip, lockflags); - error = xfs_qm_dqget(mp, NULL, gid, - XFS_DQ_GROUP, - XFS_QMOPT_DQALLOC, - &gq); + error = xfs_qm_dqget(mp, gid, XFS_DQ_GROUP, + XFS_QMOPT_DQALLOC, &gq); if (error) { ASSERT(error != -ENOENT); goto error_rele; @@ -1731,10 +1724,8 @@ xfs_qm_vop_dqalloc( if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { if (xfs_get_projid(ip) != prid) { xfs_iunlock(ip, lockflags); - error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, - XFS_DQ_PROJ, - XFS_QMOPT_DQALLOC, - &pq); + error = xfs_qm_dqget(mp, (xfs_dqid_t)prid, XFS_DQ_PROJ, + XFS_QMOPT_DQALLOC, &pq); if (error) { ASSERT(error != -ENOENT); goto error_rele; diff --git a/fs/xfs/xfs_qm_bhv.c b/fs/xfs/xfs_qm_bhv.c index 2be6d2735ca9..531e8224dcb6 100644 --- a/fs/xfs/xfs_qm_bhv.c +++ b/fs/xfs/xfs_qm_bhv.c @@ -72,7 +72,7 @@ xfs_qm_statvfs( xfs_mount_t *mp = ip->i_mount; xfs_dquot_t *dqp; - if (!xfs_qm_dqget(mp, NULL, xfs_get_projid(ip), XFS_DQ_PROJ, 0, &dqp)) { + if (!xfs_qm_dqget(mp, xfs_get_projid(ip), XFS_DQ_PROJ, 0, &dqp)) { xfs_fill_statvfs_from_dquot(statp, dqp); xfs_qm_dqput(dqp); } diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c index 0234cfc4d445..b9243f554697 100644 --- a/fs/xfs/xfs_qm_syscalls.c +++ b/fs/xfs/xfs_qm_syscalls.c @@ -425,7 +425,7 @@ xfs_qm_scall_setqlim( * a reference to the dquot, so it's safe to do this unlock/lock without * it being reclaimed in the mean time. */ - error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp); + error = xfs_qm_dqget(mp, id, type, XFS_QMOPT_DQALLOC, &dqp); if (error) { ASSERT(error != -ENOENT); goto out_unlock; @@ -700,7 +700,7 @@ xfs_qm_scall_getquota( * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't * exist, we'll get ENOENT back. */ - error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp); + error = xfs_qm_dqget(mp, id, type, 0, &dqp); if (error) return error; diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h index a4d392240cf4..1c79ebbe5236 100644 --- a/fs/xfs/xfs_quota.h +++ b/fs/xfs/xfs_quota.h @@ -91,7 +91,7 @@ extern int xfs_qm_vop_chown_reserve(struct xfs_trans *, struct xfs_inode *, struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *, uint); extern int xfs_qm_dqattach(struct xfs_inode *); -extern int xfs_qm_dqattach_locked(struct xfs_inode *, uint); +extern int xfs_qm_dqattach_locked(struct xfs_inode *ip, bool doalloc); extern void xfs_qm_dqdetach(struct xfs_inode *); extern void xfs_qm_dqrele(struct xfs_dquot *); extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *); diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index 7e2b8078ade2..713e857d9ffa 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -305,7 +305,7 @@ xfs_reflink_reserve_cow( * Fork all the shared blocks from our write offset until the end of * the extent. */ - error = xfs_qm_dqattach_locked(ip, 0); + error = xfs_qm_dqattach_locked(ip, false); if (error) return error; @@ -431,7 +431,7 @@ xfs_reflink_allocate_cow( if (error) return error; - error = xfs_qm_dqattach_locked(ip, 0); + error = xfs_qm_dqattach_locked(ip, false); if (error) goto out; goto retry;