/* -*- mode: c; c-basic-offset: 8; -*- * vim: noexpandtab sw=8 ts=8 sts=0: * * slotmap.h * * description here * * Copyright (C) 2002, 2004 Oracle. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. */ #ifndef SLOTMAP_H #define SLOTMAP_H int ocfs2_init_slot_info(struct ocfs2_super *osb); void ocfs2_free_slot_info(struct ocfs2_super *osb); int ocfs2_find_slot(struct ocfs2_super *osb); void ocfs2_put_slot(struct ocfs2_super *osb); int ocfs2_refresh_slot_info(struct ocfs2_super *osb); int ocfs2_node_num_to_slot(struct ocfs2_super *osb, unsigned int node_num); int ocfs2_slot_to_node_num_locked(struct ocfs2_super *osb, int slot_num, unsigned int *node_num); int ocfs2_clear_slot(struct ocfs2_super *osb, int slot_num); #endif Tobias Klauser
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authorKashyap Desai <kashyap.desai@broadcom.com>2016-10-21 06:33:32 -0700
committerMartin K. Petersen <martin.petersen@oracle.com>2016-10-24 21:31:43 -0400
commit1e793f6fc0db920400574211c48f9157a37e3945 (patch)
tree5c2b23a174bd21b90c81e34f7ebfe265e8468077
parent77f18a87186a87cab2a027335758a7244896084c (diff)
scsi: megaraid_sas: Fix data integrity failure for JBOD (passthrough) devices
Commit 02b01e010afe ("megaraid_sas: return sync cache call with success") modified the driver to successfully complete SYNCHRONIZE_CACHE commands without passing them to the controller. Disk drive caches are only explicitly managed by controller firmware when operating in RAID mode. So this commit effectively disabled writeback cache flushing for any drives used in JBOD mode, leading to data integrity failures. [mkp: clarified patch description] Fixes: 02b01e010afeeb49328d35650d70721d2ca3fd59 CC: stable@vger.kernel.org Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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