[18/21] xfs: separate dquot buffer reads from xfs_dqflush

Message ID	173258398108.4032920.1511154808709795549.stgit@frogsfrogsfrogs (mailing list archive)
State	New
Headers	show Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D0FCBC2C6 for <linux-xfs@vger.kernel.org>; Tue, 26 Nov 2024 01:29:24 +0000 (UTC) Date: Mon, 25 Nov 2024 17:29:24 -0800 Subject: [PATCH 18/21] xfs: separate dquot buffer reads from xfs_dqflush From: "Darrick J. Wong" <djwong@kernel.org> To: djwong@kernel.org Cc: linux-xfs@vger.kernel.org Message-ID: <173258398108.4032920.1511154808709795549.stgit@frogsfrogsfrogs> In-Reply-To: <173258397748.4032920.4159079744952779287.stgit@frogsfrogsfrogs> References: <173258397748.4032920.4159079744952779287.stgit@frogsfrogsfrogs> Precedence: bulk MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit
Series	[01/21] xfs: fix off-by-one error in fsmap's end_daddr usage \| expand [01/21] xfs: fix off-by-one error in fsmap's end_daddr usage [02/21] xfs: metapath scrubber should use the already loaded inodes [03/21] xfs: keep quota directory inode loaded [04/21] xfs: return a 64-bit block count from xfs_btree_count_blocks [05/21] xfs: don't drop errno values when we fail to ficlone the entire range [06/21] xfs: separate healthy clearing mask during repair [07/21] xfs: set XFS_SICK_INO_SYMLINK_ZAPPED explicitly when zapping a symlink [08/21] xfs: mark metadir repair tempfiles with IRECOVERY [09/21] xfs: fix null bno_hint handling in xfs_rtallocate_rtg [10/21] xfs: fix error bailout in xfs_rtginode_create [11/21] xfs: update btree keys correctly when _insrec splits an inode root block [12/21] xfs: fix scrub tracepoints when inode-rooted btrees are involved [13/21] xfs: unlock inodes when erroring out of xfs_trans_alloc_dir [14/21] xfs: only run precommits once per transaction object [15/21] xfs: remove recursion in __xfs_trans_commit [16/21] xfs: don't lose solo superblock counter update transactions [17/21] xfs: don't lose solo dquot update transactions [18/21] xfs: separate dquot buffer reads from xfs_dqflush [19/21] xfs: clean up log item accesses in xfs_qm_dqflush{,_done} [20/21] xfs: attach dquot buffer to dquot log item buffer [21/21] xfs: convert quotacheck to attach dquot buffers

diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index ff982d983989b0..6ec4087e38dfc8 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -1238,6 +1238,42 @@ xfs_qm_dqflush_check( return NULL; } +/* + * Get the buffer containing the on-disk dquot. + * + * Requires dquot flush lock, will clear the dirty flag, delete the quota log + * item from the AIL, and shut down the system if something goes wrong. + */ +int +xfs_dquot_read_buf( + struct xfs_trans *tp, + struct xfs_dquot *dqp, + struct xfs_buf **bpp) +{ + struct xfs_mount *mp = dqp->q_mount; + struct xfs_buf *bp = NULL; + int error; + + error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, dqp->q_blkno, + mp->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK, + &bp, &xfs_dquot_buf_ops); + if (error == -EAGAIN) + return error; + if (xfs_metadata_is_sick(error)) + xfs_dquot_mark_sick(dqp); + if (error) + goto out_abort; + + *bpp = bp; + return 0; + +out_abort: + dqp->q_flags &= ~XFS_DQFLAG_DIRTY; + xfs_trans_ail_delete(&dqp->q_logitem.qli_item, 0); + xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); + return error; +} + /* * Write a modified dquot to disk. * The dquot must be locked and the flush lock too taken by caller. @@ -1249,11 +1285,10 @@ xfs_qm_dqflush_check( int xfs_qm_dqflush( struct xfs_dquot *dqp, - struct xfs_buf **bpp) + struct xfs_buf *bp) { struct xfs_mount *mp = dqp->q_mount; struct xfs_log_item *lip = &dqp->q_logitem.qli_item; - struct xfs_buf *bp; struct xfs_dqblk *dqblk; xfs_failaddr_t fa; int error; @@ -1263,28 +1298,12 @@ xfs_qm_dqflush( trace_xfs_dqflush(dqp); - *bpp = NULL; - xfs_qm_dqunpin_wait(dqp); - /* - * Get the buffer containing the on-disk dquot - */ - error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, dqp->q_blkno, - mp->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK, - &bp, &xfs_dquot_buf_ops); - if (error == -EAGAIN) - goto out_unlock; - if (xfs_metadata_is_sick(error)) - xfs_dquot_mark_sick(dqp); - if (error) - goto out_abort; - fa = xfs_qm_dqflush_check(dqp); if (fa) { xfs_alert(mp, "corrupt dquot ID 0x%x in memory at %pS", dqp->q_id, fa); - xfs_buf_relse(bp); xfs_dquot_mark_sick(dqp); error = -EFSCORRUPTED; goto out_abort; @@ -1334,14 +1353,12 @@ xfs_qm_dqflush( } trace_xfs_dqflush_done(dqp); - *bpp = bp; return 0; out_abort: dqp->q_flags &= ~XFS_DQFLAG_DIRTY; xfs_trans_ail_delete(lip, 0); xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); -out_unlock: xfs_dqfunlock(dqp); return error; } diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h index d73d179df00958..50f8404c41176c 100644 --- a/fs/xfs/xfs_dquot.h +++ b/fs/xfs/xfs_dquot.h @@ -214,7 +214,9 @@ void xfs_dquot_to_disk(struct xfs_disk_dquot *ddqp, struct xfs_dquot *dqp); #define XFS_DQ_IS_DIRTY(dqp) ((dqp)->q_flags & XFS_DQFLAG_DIRTY) void xfs_qm_dqdestroy(struct xfs_dquot *dqp); -int xfs_qm_dqflush(struct xfs_dquot *dqp, struct xfs_buf **bpp); +int xfs_dquot_read_buf(struct xfs_trans *tp, struct xfs_dquot *dqp, + struct xfs_buf **bpp); +int xfs_qm_dqflush(struct xfs_dquot *dqp, struct xfs_buf *bp); void xfs_qm_dqunpin_wait(struct xfs_dquot *dqp); void xfs_qm_adjust_dqtimers(struct xfs_dquot *d); void xfs_qm_adjust_dqlimits(struct xfs_dquot *d); diff --git a/fs/xfs/xfs_dquot_item.c b/fs/xfs/xfs_dquot_item.c index 7d19091215b080..56ecc5ed01934d 100644 --- a/fs/xfs/xfs_dquot_item.c +++ b/fs/xfs/xfs_dquot_item.c @@ -155,14 +155,26 @@ xfs_qm_dquot_logitem_push( spin_unlock(&lip->li_ailp->ail_lock); - error = xfs_qm_dqflush(dqp, &bp); + error = xfs_dquot_read_buf(NULL, dqp, &bp); + if (error) { + if (error == -EAGAIN) + rval = XFS_ITEM_LOCKED; + xfs_dqfunlock(dqp); + goto out_relock_ail; + } + + /* + * dqflush completes dqflock on error, and the delwri ioend does it on + * success. + */ + error = xfs_qm_dqflush(dqp, bp); if (!error) { if (!xfs_buf_delwri_queue(bp, buffer_list)) rval = XFS_ITEM_FLUSHING; - xfs_buf_relse(bp); - } else if (error == -EAGAIN) - rval = XFS_ITEM_LOCKED; + } + xfs_buf_relse(bp); +out_relock_ail: spin_lock(&lip->li_ailp->ail_lock); out_unlock: xfs_dqunlock(dqp); diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index a4fa21dfd6b4ad..341fe4821c2d77 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -148,17 +148,28 @@ xfs_qm_dqpurge( * We don't care about getting disk errors here. We need * to purge this dquot anyway, so we go ahead regardless. */ - error = xfs_qm_dqflush(dqp, &bp); + error = xfs_dquot_read_buf(NULL, dqp, &bp); + if (error == -EAGAIN) { + xfs_dqfunlock(dqp); + dqp->q_flags &= ~XFS_DQFLAG_FREEING; + goto out_unlock; + } + if (error) + goto out_funlock; + + /* + * dqflush completes dqflock on error, and the bwrite ioend + * does it on success. + */ + error = xfs_qm_dqflush(dqp, bp); if (!error) { error = xfs_bwrite(bp); xfs_buf_relse(bp); - } else if (error == -EAGAIN) { - dqp->q_flags &= ~XFS_DQFLAG_FREEING; - goto out_unlock; } xfs_dqflock(dqp); } +out_funlock: ASSERT(atomic_read(&dqp->q_pincount) == 0); ASSERT(xlog_is_shutdown(dqp->q_logitem.qli_item.li_log) || !test_bit(XFS_LI_IN_AIL, &dqp->q_logitem.qli_item.li_flags)); @@ -495,7 +506,17 @@ xfs_qm_dquot_isolate( /* we have to drop the LRU lock to flush the dquot */ spin_unlock(lru_lock); - error = xfs_qm_dqflush(dqp, &bp); + error = xfs_dquot_read_buf(NULL, dqp, &bp); + if (error) { + xfs_dqfunlock(dqp); + goto out_unlock_dirty; + } + + /* + * dqflush completes dqflock on error, and the delwri ioend + * does it on success. + */ + error = xfs_qm_dqflush(dqp, bp); if (error) goto out_unlock_dirty; @@ -1491,11 +1512,13 @@ xfs_qm_flush_one( goto out_unlock; } - error = xfs_qm_dqflush(dqp, &bp); + error = xfs_dquot_read_buf(NULL, dqp, &bp); if (error) goto out_unlock; - xfs_buf_delwri_queue(bp, buffer_list); + error = xfs_qm_dqflush(dqp, bp); + if (!error) + xfs_buf_delwri_queue(bp, buffer_list); xfs_buf_relse(bp); out_unlock: xfs_dqunlock(dqp);

[18/21] xfs: separate dquot buffer reads from xfs_dqflush

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Patch