From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from aserp1040.oracle.com ([141.146.126.69]:47467 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755146AbcFQBWK (ORCPT ); Thu, 16 Jun 2016 21:22:10 -0400 Subject: [PATCH 039/119] xfs: add rmap btree insert and delete helpers From: "Darrick J. Wong" To: david@fromorbit.com, darrick.wong@oracle.com Cc: linux-fsdevel@vger.kernel.org, vishal.l.verma@intel.com, xfs@oss.sgi.com, Dave Chinner Date: Thu, 16 Jun 2016 18:22:02 -0700 Message-ID: <146612652222.12839.8353722216601177344.stgit@birch.djwong.org> In-Reply-To: <146612627129.12839.3827886950949809165.stgit@birch.djwong.org> References: <146612627129.12839.3827886950949809165.stgit@birch.djwong.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Add a couple of helper functions to encapsulate rmap btree insert and delete operations. Add tracepoints to the update function. Signed-off-by: Darrick J. Wong Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner --- fs/xfs/libxfs/xfs_rmap.c | 78 +++++++++++++++++++++++++++++++++++++++- fs/xfs/libxfs/xfs_rmap_btree.h | 3 ++ 2 files changed, 80 insertions(+), 1 deletion(-) diff --git a/fs/xfs/libxfs/xfs_rmap.c b/fs/xfs/libxfs/xfs_rmap.c index 53ba14e..f92eaa1 100644 --- a/fs/xfs/libxfs/xfs_rmap.c +++ b/fs/xfs/libxfs/xfs_rmap.c @@ -92,13 +92,89 @@ xfs_rmap_update( struct xfs_rmap_irec *irec) { union xfs_btree_rec rec; + int error; + + trace_xfs_rmapbt_update(cur->bc_mp, cur->bc_private.a.agno, + irec->rm_startblock, irec->rm_blockcount, + irec->rm_owner, irec->rm_offset, irec->rm_flags); rec.rmap.rm_startblock = cpu_to_be32(irec->rm_startblock); rec.rmap.rm_blockcount = cpu_to_be32(irec->rm_blockcount); rec.rmap.rm_owner = cpu_to_be64(irec->rm_owner); rec.rmap.rm_offset = cpu_to_be64( xfs_rmap_irec_offset_pack(irec)); - return xfs_btree_update(cur, &rec); + error = xfs_btree_update(cur, &rec); + if (error) + trace_xfs_rmapbt_update_error(cur->bc_mp, + cur->bc_private.a.agno, error, _RET_IP_); + return error; +} + +int +xfs_rmapbt_insert( + struct xfs_btree_cur *rcur, + xfs_agblock_t agbno, + xfs_extlen_t len, + uint64_t owner, + uint64_t offset, + unsigned int flags) +{ + int i; + int error; + + trace_xfs_rmapbt_insert(rcur->bc_mp, rcur->bc_private.a.agno, agbno, + len, owner, offset, flags); + + error = xfs_rmap_lookup_eq(rcur, agbno, len, owner, offset, flags, &i); + if (error) + goto done; + XFS_WANT_CORRUPTED_GOTO(rcur->bc_mp, i == 0, done); + + rcur->bc_rec.r.rm_startblock = agbno; + rcur->bc_rec.r.rm_blockcount = len; + rcur->bc_rec.r.rm_owner = owner; + rcur->bc_rec.r.rm_offset = offset; + rcur->bc_rec.r.rm_flags = flags; + error = xfs_btree_insert(rcur, &i); + if (error) + goto done; + XFS_WANT_CORRUPTED_GOTO(rcur->bc_mp, i == 1, done); +done: + if (error) + trace_xfs_rmapbt_insert_error(rcur->bc_mp, + rcur->bc_private.a.agno, error, _RET_IP_); + return error; +} + +STATIC int +xfs_rmapbt_delete( + struct xfs_btree_cur *rcur, + xfs_agblock_t agbno, + xfs_extlen_t len, + uint64_t owner, + uint64_t offset, + unsigned int flags) +{ + int i; + int error; + + trace_xfs_rmapbt_delete(rcur->bc_mp, rcur->bc_private.a.agno, agbno, + len, owner, offset, flags); + + error = xfs_rmap_lookup_eq(rcur, agbno, len, owner, offset, flags, &i); + if (error) + goto done; + XFS_WANT_CORRUPTED_GOTO(rcur->bc_mp, i == 1, done); + + error = xfs_btree_delete(rcur, &i); + if (error) + goto done; + XFS_WANT_CORRUPTED_GOTO(rcur->bc_mp, i == 1, done); +done: + if (error) + trace_xfs_rmapbt_delete_error(rcur->bc_mp, + rcur->bc_private.a.agno, error, _RET_IP_); + return error; } static int diff --git a/fs/xfs/libxfs/xfs_rmap_btree.h b/fs/xfs/libxfs/xfs_rmap_btree.h index 9d92da5..6674340 100644 --- a/fs/xfs/libxfs/xfs_rmap_btree.h +++ b/fs/xfs/libxfs/xfs_rmap_btree.h @@ -64,6 +64,9 @@ int xfs_rmap_lookup_le(struct xfs_btree_cur *cur, xfs_agblock_t bno, int xfs_rmap_lookup_eq(struct xfs_btree_cur *cur, xfs_agblock_t bno, xfs_extlen_t len, uint64_t owner, uint64_t offset, unsigned int flags, int *stat); +int xfs_rmapbt_insert(struct xfs_btree_cur *rcur, xfs_agblock_t agbno, + xfs_extlen_t len, uint64_t owner, uint64_t offset, + unsigned int flags); int xfs_rmap_get_rec(struct xfs_btree_cur *cur, struct xfs_rmap_irec *irec, int *stat);