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 X-Spam-Level: X-Spam-Status: No, score=-16.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 566A7C433F5 for ; Wed, 15 Sep 2021 23:07:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 39839610D1 for ; Wed, 15 Sep 2021 23:07:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231579AbhIOXJQ (ORCPT ); Wed, 15 Sep 2021 19:09:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:32880 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232800AbhIOXJQ (ORCPT ); Wed, 15 Sep 2021 19:09:16 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id DC95E600D4; Wed, 15 Sep 2021 23:07:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1631747277; bh=HKKxJ75u+GaB2Z3225jCvziqshLKiG7ExaWDLr8eOEE=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=Ql5FfAAulHJm/S0vufJgnv7aqTYwKoPHGam20FUSjuUgzLF/0o+DZwgLije5HTfQf CSfktyuKzOdM2+RoclNz6ddYJTZV0pZh4wsCE8YGDUUs/t1u+0uUutNTm1CuDFj/sb nyGVjmRvy2by2JxbBUGH9+axQwpBz8Nx5y0ysv/Ouwx2KpY2qVLXne3nRSxRa9UEIo IiGFbSf71vzlZE3Ua0FVwZCM8+LMP2G/oPLhMuHYGVV/4uoI8Mc+v69ZVm4tssCkb0 PODje9rBMkVdhC1Ak4EZba8DfLicx96HXICLLMylhpZ1OL95/Bng9a6QshJtcW8slZ 2YzQmSjfPueVw== Subject: [PATCH 15/61] xfs: Hoist xfs_attr_leaf_addname From: "Darrick J. Wong" To: sandeen@sandeen.net, djwong@kernel.org Cc: Allison Henderson , Chandan Babu R , Brian Foster , linux-xfs@vger.kernel.org Date: Wed, 15 Sep 2021 16:07:56 -0700 Message-ID: <163174727661.350433.461200209108539752.stgit@magnolia> In-Reply-To: <163174719429.350433.8562606396437219220.stgit@magnolia> References: <163174719429.350433.8562606396437219220.stgit@magnolia> User-Agent: StGit/0.19 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org From: Allison Henderson Source kernel commit: 83c6e70789ff371c4eebc54f2c8d979305a1bae8 This patch hoists xfs_attr_leaf_addname into the calling function. The goal being to get all the code that will require state management into the same scope. This isn't particularly aesthetic right away, but it is a preliminary step to merging in the state machine code. Signed-off-by: Allison Henderson Reviewed-by: Darrick J. Wong Reviewed-by: Chandan Babu R Reviewed-by: Brian Foster Signed-off-by: Darrick J. Wong --- libxfs/xfs_attr.c | 209 ++++++++++++++++++++++++----------------------------- 1 file changed, 96 insertions(+), 113 deletions(-) diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c index 16e919d2..9dc518a3 100644 --- a/libxfs/xfs_attr.c +++ b/libxfs/xfs_attr.c @@ -44,9 +44,9 @@ STATIC int xfs_attr_shortform_addname(xfs_da_args_t *args); * Internal routines when attribute list is one block. */ STATIC int xfs_attr_leaf_get(xfs_da_args_t *args); -STATIC int xfs_attr_leaf_addname(xfs_da_args_t *args); STATIC int xfs_attr_leaf_removename(xfs_da_args_t *args); STATIC int xfs_attr_leaf_hasname(struct xfs_da_args *args, struct xfs_buf **bp); +STATIC int xfs_attr_leaf_try_add(struct xfs_da_args *args, struct xfs_buf *bp); /* * Internal routines when attribute list is more than one block. @@ -291,8 +291,9 @@ xfs_attr_set_args( struct xfs_da_args *args) { struct xfs_inode *dp = args->dp; + struct xfs_buf *bp = NULL; struct xfs_da_state *state = NULL; - int error = 0; + int forkoff, error = 0; /* * If the attribute list is already in leaf format, jump straight to @@ -307,10 +308,101 @@ xfs_attr_set_args( } if (xfs_attr_is_leaf(dp)) { - error = xfs_attr_leaf_addname(args); - if (error != -ENOSPC) + error = xfs_attr_leaf_try_add(args, bp); + if (error == -ENOSPC) + goto node; + else if (error) return error; + /* + * Commit the transaction that added the attr name so that + * later routines can manage their own transactions. + */ + error = xfs_trans_roll_inode(&args->trans, dp); + if (error) + return error; + + /* + * If there was an out-of-line value, allocate the blocks we + * identified for its storage and copy the value. This is done + * after we create the attribute so that we don't overflow the + * maximum size of a transaction and/or hit a deadlock. + */ + if (args->rmtblkno > 0) { + error = xfs_attr_rmtval_set(args); + if (error) + return error; + } + + if (!(args->op_flags & XFS_DA_OP_RENAME)) { + /* + * Added a "remote" value, just clear the incomplete + *flag. + */ + if (args->rmtblkno > 0) + error = xfs_attr3_leaf_clearflag(args); + + return error; + } + + /* + * If this is an atomic rename operation, we must "flip" the + * incomplete flags on the "new" and "old" attribute/value pairs + * so that one disappears and one appears atomically. Then we + * must remove the "old" attribute/value pair. + * + * In a separate transaction, set the incomplete flag on the + * "old" attr and clear the incomplete flag on the "new" attr. + */ + + error = xfs_attr3_leaf_flipflags(args); + if (error) + return error; + /* + * Commit the flag value change and start the next trans in + * series. + */ + error = xfs_trans_roll_inode(&args->trans, args->dp); + if (error) + return error; + + /* + * Dismantle the "old" attribute/value pair by removing a + * "remote" value (if it exists). + */ + xfs_attr_restore_rmt_blk(args); + + if (args->rmtblkno) { + error = xfs_attr_rmtval_invalidate(args); + if (error) + return error; + + error = xfs_attr_rmtval_remove(args); + if (error) + return error; + } + + /* + * Read in the block containing the "old" attr, then remove the + * "old" attr from that block (neat, huh!) + */ + error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, + &bp); + if (error) + return error; + + xfs_attr3_leaf_remove(bp, args); + + /* + * If the result is small enough, shrink it all into the inode. + */ + forkoff = xfs_attr_shortform_allfit(bp, dp); + if (forkoff) + error = xfs_attr3_leaf_to_shortform(bp, args, forkoff); + /* bp is gone due to xfs_da_shrink_inode */ + + return error; +node: /* * Promote the attribute list to the Btree format. */ @@ -737,115 +829,6 @@ xfs_attr_leaf_try_add( return retval; } - -/* - * Add a name to the leaf attribute list structure - * - * This leaf block cannot have a "remote" value, we only call this routine - * if bmap_one_block() says there is only one block (ie: no remote blks). - */ -STATIC int -xfs_attr_leaf_addname( - struct xfs_da_args *args) -{ - int error, forkoff; - struct xfs_buf *bp = NULL; - struct xfs_inode *dp = args->dp; - - trace_xfs_attr_leaf_addname(args); - - error = xfs_attr_leaf_try_add(args, bp); - if (error) - return error; - - /* - * Commit the transaction that added the attr name so that - * later routines can manage their own transactions. - */ - error = xfs_trans_roll_inode(&args->trans, dp); - if (error) - return error; - - /* - * If there was an out-of-line value, allocate the blocks we - * identified for its storage and copy the value. This is done - * after we create the attribute so that we don't overflow the - * maximum size of a transaction and/or hit a deadlock. - */ - if (args->rmtblkno > 0) { - error = xfs_attr_rmtval_set(args); - if (error) - return error; - } - - if (!(args->op_flags & XFS_DA_OP_RENAME)) { - /* - * Added a "remote" value, just clear the incomplete flag. - */ - if (args->rmtblkno > 0) - error = xfs_attr3_leaf_clearflag(args); - - return error; - } - - /* - * If this is an atomic rename operation, we must "flip" the incomplete - * flags on the "new" and "old" attribute/value pairs so that one - * disappears and one appears atomically. Then we must remove the "old" - * attribute/value pair. - * - * In a separate transaction, set the incomplete flag on the "old" attr - * and clear the incomplete flag on the "new" attr. - */ - - error = xfs_attr3_leaf_flipflags(args); - if (error) - return error; - /* - * Commit the flag value change and start the next trans in series. - */ - error = xfs_trans_roll_inode(&args->trans, args->dp); - if (error) - return error; - - /* - * Dismantle the "old" attribute/value pair by removing a "remote" value - * (if it exists). - */ - xfs_attr_restore_rmt_blk(args); - - if (args->rmtblkno) { - error = xfs_attr_rmtval_invalidate(args); - if (error) - return error; - - error = xfs_attr_rmtval_remove(args); - if (error) - return error; - } - - /* - * Read in the block containing the "old" attr, then remove the "old" - * attr from that block (neat, huh!) - */ - error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, - &bp); - if (error) - return error; - - xfs_attr3_leaf_remove(bp, args); - - /* - * If the result is small enough, shrink it all into the inode. - */ - forkoff = xfs_attr_shortform_allfit(bp, dp); - if (forkoff) - error = xfs_attr3_leaf_to_shortform(bp, args, forkoff); - /* bp is gone due to xfs_da_shrink_inode */ - - return error; -} - /* * Return EEXIST if attr is found, or ENOATTR if not */