From patchwork Mon Jun 3 19:05:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 13684149 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 77B96259C for ; Mon, 3 Jun 2024 19:05:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717441537; cv=none; b=qbwDkNyARDKRaOFe7BB0kPUd4kapFjVse03oMCa54OfWMLM1myH6R6fVQ2apd5H084GNG5RTL9QKlAIM6WHQd2WIv2sZgmMqFIXguqZVTcF0OCNxPPGtoWZ7cvtgV3D0z7RYJ+bwNodsF64hYqG2VxjPwSkJkGVj/7tsBV6N6J4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717441537; c=relaxed/simple; bh=FLJh0awl4SZRz8seC6BdDjuUsHazDAc2jO5sZcWFIGk=; h=Date:Subject:From:To:Cc:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ARpy3OOmlXZuFcXrYvkx0vFurLr3tSVRuifoLbTMTSZqcti5j4/+f1FF1zuao+TFoYzLzNq9qCVZs9Zvr8uUy5plPEUn/MEJsEAEWgMcsZ6uB0nhDafgzdc9WgQHywSCcd2JrVQ2TLP3cWtLlzKmthIYCVhlyf74kiu852lbsY8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ErKSE43k; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ErKSE43k" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5011AC2BD10; Mon, 3 Jun 2024 19:05:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1717441537; bh=FLJh0awl4SZRz8seC6BdDjuUsHazDAc2jO5sZcWFIGk=; h=Date:Subject:From:To:Cc:In-Reply-To:References:From; b=ErKSE43kES7X6RqdeuCzfVm77bk5hLNTC1f8w1+ospNZ5EN0TaXUG6IeKAW8llYez PWeBsV+8ejtLz4ZBjeyIOe/CDCCxt5ZK+01zksxuRNxJXOuFwZysxTLUAOAncYxf5x ZcPzeZ11GMMT5oZ8wQ4fwtgAHVMKnEUxq4rI2Qr9ZWwANxEehSe5qnpD1yXyLJu0/J 2I4W8wRh6ea1dZ40At7sz2NCnXwrW72Xl/sEipZ5ZgBflhcxxMhJS5d8+i33uIM5Vd TGzye/+s3W7CLIPLRK6WF3s8ydvH5x3xD2NRU6k4g8UGj6oFvJMkARWOJm7p/ZsPkD Vl11EyfFnAA4Q== Date: Mon, 03 Jun 2024 12:05:36 -0700 Subject: [PATCH 052/111] xfs: don't override bc_ops for staging btrees From: "Darrick J. Wong" To: djwong@kernel.org, cem@kernel.org Cc: Christoph Hellwig , Carlos Maiolino , linux-xfs@vger.kernel.org Message-ID: <171744040155.1443973.5253273451160917827.stgit@frogsfrogsfrogs> In-Reply-To: <171744039240.1443973.5959953049110025783.stgit@frogsfrogsfrogs> References: <171744039240.1443973.5959953049110025783.stgit@frogsfrogsfrogs> User-Agent: StGit/0.19 Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Christoph Hellwig Source kernel commit: 2b9e7f2668c540f18afd66a053ea78f3a629f8e2 Add a few conditionals for staging btrees to the core btree code instead of overloading the bc_ops vector. Signed-off-by: Christoph Hellwig Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong Reviewed-by: Carlos Maiolino --- libxfs/xfs_alloc_btree.c | 6 -- libxfs/xfs_bmap_btree.c | 6 +- libxfs/xfs_btree.c | 75 +++++++++++++++++++++++------- libxfs/xfs_btree_staging.c | 109 +------------------------------------------ libxfs/xfs_btree_staging.h | 7 +-- libxfs/xfs_ialloc_btree.c | 4 +- libxfs/xfs_refcount_btree.c | 2 - libxfs/xfs_rmap_btree.c | 2 - 8 files changed, 72 insertions(+), 139 deletions(-) diff --git a/libxfs/xfs_alloc_btree.c b/libxfs/xfs_alloc_btree.c index b18ac7045..6b17037f8 100644 --- a/libxfs/xfs_alloc_btree.c +++ b/libxfs/xfs_alloc_btree.c @@ -592,11 +592,7 @@ xfs_allocbt_commit_staged_btree( agf->agf_levels[cur->bc_btnum] = cpu_to_be32(afake->af_levels); xfs_alloc_log_agf(tp, agbp, XFS_AGF_ROOTS | XFS_AGF_LEVELS); - if (cur->bc_btnum == XFS_BTNUM_BNO) { - xfs_btree_commit_afakeroot(cur, tp, agbp, &xfs_bnobt_ops); - } else { - xfs_btree_commit_afakeroot(cur, tp, agbp, &xfs_cntbt_ops); - } + xfs_btree_commit_afakeroot(cur, tp, agbp); } /* Calculate number of records in an alloc btree block. */ diff --git a/libxfs/xfs_bmap_btree.c b/libxfs/xfs_bmap_btree.c index 7fc325fd3..611f5ed96 100644 --- a/libxfs/xfs_bmap_btree.c +++ b/libxfs/xfs_bmap_btree.c @@ -608,7 +608,6 @@ xfs_bmbt_stage_cursor( struct xbtree_ifakeroot *ifake) { struct xfs_btree_cur *cur; - struct xfs_btree_ops *ops; /* data fork always has larger maxheight */ cur = xfs_bmbt_init_common(mp, NULL, ip, XFS_DATA_FORK); @@ -617,8 +616,7 @@ xfs_bmbt_stage_cursor( /* Don't let anyone think we're attached to the real fork yet. */ cur->bc_ino.whichfork = -1; - xfs_btree_stage_ifakeroot(cur, ifake, &ops); - ops->update_cursor = NULL; + xfs_btree_stage_ifakeroot(cur, ifake); return cur; } @@ -662,7 +660,7 @@ xfs_bmbt_commit_staged_btree( break; } xfs_trans_log_inode(tp, cur->bc_ino.ip, flags); - xfs_btree_commit_ifakeroot(cur, tp, whichfork, &xfs_bmbt_ops); + xfs_btree_commit_ifakeroot(cur, tp, whichfork); } /* diff --git a/libxfs/xfs_btree.c b/libxfs/xfs_btree.c index f59fa54e3..42a1ed786 100644 --- a/libxfs/xfs_btree.c +++ b/libxfs/xfs_btree.c @@ -404,6 +404,15 @@ xfs_btree_free_block( trace_xfs_btree_free_block(cur, bp); + /* + * Don't allow block freeing for a staging cursor, because staging + * cursors do not support regular btree modifications. + */ + if (unlikely(cur->bc_flags & XFS_BTREE_STAGING)) { + ASSERT(0); + return -EFSCORRUPTED; + } + error = cur->bc_ops->free_block(cur, bp); if (!error) { xfs_trans_binval(cur->bc_tp, bp); @@ -455,8 +464,6 @@ xfs_btree_del_cursor( break; } - if (unlikely(cur->bc_flags & XFS_BTREE_STAGING)) - kfree(cur->bc_ops); kmem_cache_free(cur->bc_cache, cur); } @@ -464,20 +471,26 @@ xfs_btree_del_cursor( * Duplicate the btree cursor. * Allocate a new one, copy the record, re-get the buffers. */ -int /* error */ +int /* error */ xfs_btree_dup_cursor( - struct xfs_btree_cur *cur, /* input cursor */ - struct xfs_btree_cur **ncur) /* output cursor */ + struct xfs_btree_cur *cur, /* input cursor */ + struct xfs_btree_cur **ncur) /* output cursor */ { - struct xfs_buf *bp; /* btree block's buffer pointer */ - int error; /* error return value */ - int i; /* level number of btree block */ - xfs_mount_t *mp; /* mount structure for filesystem */ - struct xfs_btree_cur *new; /* new cursor value */ - xfs_trans_t *tp; /* transaction pointer, can be NULL */ + struct xfs_mount *mp = cur->bc_mp; + struct xfs_trans *tp = cur->bc_tp; + struct xfs_buf *bp; + struct xfs_btree_cur *new; + int error; + int i; - tp = cur->bc_tp; - mp = cur->bc_mp; + /* + * Don't allow staging cursors to be duplicated because they're supposed + * to be kept private to a single thread. + */ + if (unlikely(cur->bc_flags & XFS_BTREE_STAGING)) { + ASSERT(0); + return -EFSCORRUPTED; + } /* * Allocate a new cursor like the old one. @@ -1892,6 +1905,8 @@ xfs_btree_init_ptr_from_cur( * in xfs_btree_lookup_get_block and don't need a pointer here. */ ptr->l = 0; + } else if (cur->bc_flags & XFS_BTREE_STAGING) { + ptr->s = cpu_to_be32(cur->bc_ag.afake->af_root); } else { cur->bc_ops->init_ptr_from_cur(cur, ptr); } @@ -2713,6 +2728,18 @@ xfs_btree_alloc_block( { int error; + /* + * Don't allow block allocation for a staging cursor, because staging + * cursors do not support regular btree modifications. + * + * Bulk loading uses a separate callback to obtain new blocks from a + * preallocated list, which prevents ENOSPC failures during loading. + */ + if (unlikely(cur->bc_flags & XFS_BTREE_STAGING)) { + ASSERT(0); + return -EFSCORRUPTED; + } + error = cur->bc_ops->alloc_block(cur, hint_block, new_block, stat); trace_xfs_btree_alloc_block(cur, new_block, *stat, error); return error; @@ -3113,6 +3140,21 @@ xfs_btree_new_iroot( return error; } +static void +xfs_btree_set_root( + struct xfs_btree_cur *cur, + const union xfs_btree_ptr *ptr, + int inc) +{ + if (cur->bc_flags & XFS_BTREE_STAGING) { + /* Update the btree root information for a per-AG fake root. */ + cur->bc_ag.afake->af_root = be32_to_cpu(ptr->s); + cur->bc_ag.afake->af_levels += inc; + } else { + cur->bc_ops->set_root(cur, ptr, inc); + } +} + /* * Allocate a new root block, fill it in. */ @@ -3153,7 +3195,7 @@ xfs_btree_new_root( goto error0; /* Set the root in the holding structure increasing the level by 1. */ - cur->bc_ops->set_root(cur, &lptr, 1); + xfs_btree_set_root(cur, &lptr, 1); /* * At the previous root level there are now two blocks: the old root, @@ -3581,7 +3623,8 @@ xfs_btree_insert( if (pcur != cur && (ncur || xfs_btree_ptr_is_null(cur, &nptr))) { /* Save the state from the cursor before we trash it */ - if (cur->bc_ops->update_cursor) + if (cur->bc_ops->update_cursor && + !(cur->bc_flags & XFS_BTREE_STAGING)) cur->bc_ops->update_cursor(pcur, cur); cur->bc_nlevels = pcur->bc_nlevels; xfs_btree_del_cursor(pcur, XFS_BTREE_NOERROR); @@ -3724,7 +3767,7 @@ xfs_btree_kill_root( * Update the root pointer, decreasing the level by 1 and then * free the old root. */ - cur->bc_ops->set_root(cur, newroot, -1); + xfs_btree_set_root(cur, newroot, -1); error = xfs_btree_free_block(cur, bp); if (error) diff --git a/libxfs/xfs_btree_staging.c b/libxfs/xfs_btree_staging.c index 656bad6cd..5a988a8bf 100644 --- a/libxfs/xfs_btree_staging.c +++ b/libxfs/xfs_btree_staging.c @@ -38,63 +38,6 @@ * specific btree type to commit the new btree into the filesystem. */ -/* - * Don't allow staging cursors to be duplicated because they're supposed to be - * kept private to a single thread. - */ -STATIC struct xfs_btree_cur * -xfs_btree_fakeroot_dup_cursor( - struct xfs_btree_cur *cur) -{ - ASSERT(0); - return NULL; -} - -/* - * Don't allow block allocation for a staging cursor, because staging cursors - * do not support regular btree modifications. - * - * Bulk loading uses a separate callback to obtain new blocks from a - * preallocated list, which prevents ENOSPC failures during loading. - */ -STATIC int -xfs_btree_fakeroot_alloc_block( - struct xfs_btree_cur *cur, - const union xfs_btree_ptr *start_bno, - union xfs_btree_ptr *new_bno, - int *stat) -{ - ASSERT(0); - return -EFSCORRUPTED; -} - -/* - * Don't allow block freeing for a staging cursor, because staging cursors - * do not support regular btree modifications. - */ -STATIC int -xfs_btree_fakeroot_free_block( - struct xfs_btree_cur *cur, - struct xfs_buf *bp) -{ - ASSERT(0); - return -EFSCORRUPTED; -} - -/* Initialize a pointer to the root block from the fakeroot. */ -STATIC void -xfs_btree_fakeroot_init_ptr_from_cur( - struct xfs_btree_cur *cur, - union xfs_btree_ptr *ptr) -{ - struct xbtree_afakeroot *afake; - - ASSERT(cur->bc_flags & XFS_BTREE_STAGING); - - afake = cur->bc_ag.afake; - ptr->s = cpu_to_be32(afake->af_root); -} - /* * Bulk Loading for AG Btrees * ========================== @@ -109,47 +52,20 @@ xfs_btree_fakeroot_init_ptr_from_cur( * cursor into a regular btree cursor. */ -/* Update the btree root information for a per-AG fake root. */ -STATIC void -xfs_btree_afakeroot_set_root( - struct xfs_btree_cur *cur, - const union xfs_btree_ptr *ptr, - int inc) -{ - struct xbtree_afakeroot *afake = cur->bc_ag.afake; - - ASSERT(cur->bc_flags & XFS_BTREE_STAGING); - afake->af_root = be32_to_cpu(ptr->s); - afake->af_levels += inc; -} - /* * Initialize a AG-rooted btree cursor with the given AG btree fake root. - * The btree cursor's bc_ops will be overridden as needed to make the staging - * functionality work. */ void xfs_btree_stage_afakeroot( struct xfs_btree_cur *cur, struct xbtree_afakeroot *afake) { - struct xfs_btree_ops *nops; - ASSERT(!(cur->bc_flags & XFS_BTREE_STAGING)); ASSERT(cur->bc_ops->type != XFS_BTREE_TYPE_INODE); ASSERT(cur->bc_tp == NULL); - nops = kmalloc(sizeof(struct xfs_btree_ops), GFP_KERNEL | __GFP_NOFAIL); - memcpy(nops, cur->bc_ops, sizeof(struct xfs_btree_ops)); - nops->alloc_block = xfs_btree_fakeroot_alloc_block; - nops->free_block = xfs_btree_fakeroot_free_block; - nops->init_ptr_from_cur = xfs_btree_fakeroot_init_ptr_from_cur; - nops->set_root = xfs_btree_afakeroot_set_root; - nops->dup_cursor = xfs_btree_fakeroot_dup_cursor; - cur->bc_ag.afake = afake; cur->bc_nlevels = afake->af_levels; - cur->bc_ops = nops; cur->bc_flags |= XFS_BTREE_STAGING; } @@ -163,18 +79,15 @@ void xfs_btree_commit_afakeroot( struct xfs_btree_cur *cur, struct xfs_trans *tp, - struct xfs_buf *agbp, - const struct xfs_btree_ops *ops) + struct xfs_buf *agbp) { ASSERT(cur->bc_flags & XFS_BTREE_STAGING); ASSERT(cur->bc_tp == NULL); trace_xfs_btree_commit_afakeroot(cur); - kfree((void *)cur->bc_ops); cur->bc_ag.afake = NULL; cur->bc_ag.agbp = agbp; - cur->bc_ops = ops; cur->bc_flags &= ~XFS_BTREE_STAGING; cur->bc_tp = tp; } @@ -212,28 +125,15 @@ xfs_btree_commit_afakeroot( void xfs_btree_stage_ifakeroot( struct xfs_btree_cur *cur, - struct xbtree_ifakeroot *ifake, - struct xfs_btree_ops **new_ops) + struct xbtree_ifakeroot *ifake) { - struct xfs_btree_ops *nops; - ASSERT(!(cur->bc_flags & XFS_BTREE_STAGING)); ASSERT(cur->bc_ops->type == XFS_BTREE_TYPE_INODE); ASSERT(cur->bc_tp == NULL); - nops = kmalloc(sizeof(struct xfs_btree_ops), GFP_KERNEL | __GFP_NOFAIL); - memcpy(nops, cur->bc_ops, sizeof(struct xfs_btree_ops)); - nops->alloc_block = xfs_btree_fakeroot_alloc_block; - nops->free_block = xfs_btree_fakeroot_free_block; - nops->dup_cursor = xfs_btree_fakeroot_dup_cursor; - cur->bc_ino.ifake = ifake; cur->bc_nlevels = ifake->if_levels; - cur->bc_ops = nops; cur->bc_flags |= XFS_BTREE_STAGING; - - if (new_ops) - *new_ops = nops; } /* @@ -246,18 +146,15 @@ void xfs_btree_commit_ifakeroot( struct xfs_btree_cur *cur, struct xfs_trans *tp, - int whichfork, - const struct xfs_btree_ops *ops) + int whichfork) { ASSERT(cur->bc_flags & XFS_BTREE_STAGING); ASSERT(cur->bc_tp == NULL); trace_xfs_btree_commit_ifakeroot(cur); - kfree((void *)cur->bc_ops); cur->bc_ino.ifake = NULL; cur->bc_ino.whichfork = whichfork; - cur->bc_ops = ops; cur->bc_flags &= ~XFS_BTREE_STAGING; cur->bc_tp = tp; } diff --git a/libxfs/xfs_btree_staging.h b/libxfs/xfs_btree_staging.h index 8e29cd3cc..0c9c2ffb1 100644 --- a/libxfs/xfs_btree_staging.h +++ b/libxfs/xfs_btree_staging.h @@ -22,7 +22,7 @@ struct xbtree_afakeroot { void xfs_btree_stage_afakeroot(struct xfs_btree_cur *cur, struct xbtree_afakeroot *afake); void xfs_btree_commit_afakeroot(struct xfs_btree_cur *cur, struct xfs_trans *tp, - struct xfs_buf *agbp, const struct xfs_btree_ops *ops); + struct xfs_buf *agbp); /* Fake root for an inode-rooted btree. */ struct xbtree_ifakeroot { @@ -41,10 +41,9 @@ struct xbtree_ifakeroot { /* Cursor interactions with fake roots for inode-rooted btrees. */ void xfs_btree_stage_ifakeroot(struct xfs_btree_cur *cur, - struct xbtree_ifakeroot *ifake, - struct xfs_btree_ops **new_ops); + struct xbtree_ifakeroot *ifake); void xfs_btree_commit_ifakeroot(struct xfs_btree_cur *cur, struct xfs_trans *tp, - int whichfork, const struct xfs_btree_ops *ops); + int whichfork); /* Bulk loading of staged btrees. */ typedef int (*xfs_btree_bload_get_records_fn)(struct xfs_btree_cur *cur, diff --git a/libxfs/xfs_ialloc_btree.c b/libxfs/xfs_ialloc_btree.c index 79ab04684..87471ba14 100644 --- a/libxfs/xfs_ialloc_btree.c +++ b/libxfs/xfs_ialloc_btree.c @@ -536,7 +536,7 @@ xfs_inobt_commit_staged_btree( fields |= XFS_AGI_IBLOCKS; } xfs_ialloc_log_agi(tp, agbp, fields); - xfs_btree_commit_afakeroot(cur, tp, agbp, &xfs_inobt_ops); + xfs_btree_commit_afakeroot(cur, tp, agbp); } else { fields = XFS_AGI_FREE_ROOT | XFS_AGI_FREE_LEVEL; agi->agi_free_root = cpu_to_be32(afake->af_root); @@ -546,7 +546,7 @@ xfs_inobt_commit_staged_btree( fields |= XFS_AGI_IBLOCKS; } xfs_ialloc_log_agi(tp, agbp, fields); - xfs_btree_commit_afakeroot(cur, tp, agbp, &xfs_finobt_ops); + xfs_btree_commit_afakeroot(cur, tp, agbp); } } diff --git a/libxfs/xfs_refcount_btree.c b/libxfs/xfs_refcount_btree.c index 529091a6b..45bfb39e0 100644 --- a/libxfs/xfs_refcount_btree.c +++ b/libxfs/xfs_refcount_btree.c @@ -418,7 +418,7 @@ xfs_refcountbt_commit_staged_btree( xfs_alloc_log_agf(tp, agbp, XFS_AGF_REFCOUNT_BLOCKS | XFS_AGF_REFCOUNT_ROOT | XFS_AGF_REFCOUNT_LEVEL); - xfs_btree_commit_afakeroot(cur, tp, agbp, &xfs_refcountbt_ops); + xfs_btree_commit_afakeroot(cur, tp, agbp); } /* Calculate number of records in a refcount btree block. */ diff --git a/libxfs/xfs_rmap_btree.c b/libxfs/xfs_rmap_btree.c index 311261df3..52c820108 100644 --- a/libxfs/xfs_rmap_btree.c +++ b/libxfs/xfs_rmap_btree.c @@ -565,7 +565,7 @@ xfs_rmapbt_commit_staged_btree( agf->agf_rmap_blocks = cpu_to_be32(afake->af_blocks); xfs_alloc_log_agf(tp, agbp, XFS_AGF_ROOTS | XFS_AGF_LEVELS | XFS_AGF_RMAP_BLOCKS); - xfs_btree_commit_afakeroot(cur, tp, agbp, &xfs_rmapbt_ops); + xfs_btree_commit_afakeroot(cur, tp, agbp); } /* Calculate number of records in a reverse mapping btree block. */