/*
* Copyright (c) 2008-2010, 2013 Dave Chinner
* 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.
*
* This program is distributed in the hope that it would 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 the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_bit.h"
#include "xfs_mount.h"
#include "xfs_trans.h"
#include "xfs_trans_priv.h"
#include "xfs_error.h"
#include "xfs_icreate_item.h"
#include "xfs_log.h"
kmem_zone_t *xfs_icreate_zone; /* inode create item zone */
static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip)
{
return container_of(lip, struct xfs_icreate_item, ic_item);
}
/*
* This returns the number of iovecs needed to log the given inode item.
*
* We only need one iovec for the icreate log structure.
*/
STATIC void
xfs_icreate_item_size(
struct xfs_log_item *lip,
int *nvecs,
int *nbytes)
{
*nvecs += 1;
*nbytes += sizeof(struct xfs_icreate_log);
}
/*
* This is called to fill in the vector of log iovecs for the
* given inode create log item.
*/
STATIC void
xfs_icreate_item_format(
struct xfs_log_item *lip,
struct xfs_log_vec *lv)
{
struct xfs_icreate_item *icp = ICR_ITEM(lip);
struct xfs_log_iovec *vecp = NULL;
xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ICREATE,
&icp->ic_format,
sizeof(struct xfs_icreate_log));
}
/* Pinning has no meaning for the create item, so just return. */
STATIC void
xfs_icreate_item_pin(
struct xfs_log_item *lip)
{
}
/* pinning has no meaning for the create item, so just return. */
STATIC void
xfs_icreate_item_unpin(
struct xfs_log_item *lip,
int remove)
{
}
STATIC void
xfs_icreate_item_unlock(
struct xfs_log_item *lip)
{
struct xfs_icreate_item *icp = ICR_ITEM(lip);
if (icp->ic_item.li_flags & XFS_LI_ABORTED)
kmem_zone_free(xfs_icreate_zone, icp);
return;
}
/*
* Because we have ordered buffers being tracked in the AIL for the inode
* creation, we don't need the create item after this. Hence we can free
* the log item and return -1 to tell the caller we're done with the item.
*/
STATIC xfs_lsn_t
xfs_icreate_item_committed(
struct xfs_log_item *lip,
xfs_lsn_t lsn)
{
struct xfs_icreate_item *icp = ICR_ITEM(lip);
kmem_zone_free(xfs_icreate_zone, icp);
return (xfs_lsn_t)-1;
}
/* item can never get into the AIL */
STATIC uint
xfs_icreate_item_push(
struct xfs_log_item *lip,
struct list_head *buffer_list)
{
ASSERT(0);
return XFS_ITEM_SUCCESS;
}
/* Ordered buffers do the dependency tracking here, so this does nothing. */
STATIC void
xfs_icreate_item_committing(
struct xfs_log_item *lip,
xfs_lsn_t lsn)
{
}
/*
* This is the ops vector shared by all buf log items.
*/
static const struct xfs_item_ops xfs_icreate_item_ops = {
.iop_size = xfs_icreate_item_size,
.iop_format = xfs_icreate_item_format,
.iop_pin = xfs_icreate_item_pin,
.iop_unpin = xfs_icreate_item_unpin,
.iop_push = xfs_icreate_item_push,
.iop_unlock = xfs_icreate_item_unlock,
.iop_committed = xfs_icreate_item_committed,
.iop_committing = xfs_icreate_item_committing,
};
/*
* Initialize the inode log item for a newly allocated (in-core) inode.
*
* Inode extents can only reside within an AG. Hence specify the starting
* block for the inode chunk by offset within an AG as well as the
* length of the allocated extent.
*
* This joins the item to the transaction and marks it dirty so
* that we don't need a separate call to do this, nor does the
* caller need to know anything about the icreate item.
*/
void
xfs_icreate_log(
struct xfs_trans *tp,
xfs_agnumber_t agno,
xfs_agblock_t agbno,
unsigned int count,
unsigned int inode_size,
xfs_agblock_t length,
unsigned int generation)
{
struct xfs_icreate_item *icp;
icp = kmem_zone_zalloc(xfs_icreate_zone, KM_SLEEP);
xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE,
&xfs_icreate_item_ops);
icp->ic_format.icl_type = XFS_LI_ICREATE;
icp->ic_format.icl_size = 1; /* single vector */
icp->ic_format.icl_ag = cpu_to_be32(agno);
icp->ic_format.icl_agbno = cpu_to_be32(agbno);
icp->ic_format.icl_count = cpu_to_be32(count);
icp->ic_format.icl_isize = cpu_to_be32(inode_size);
icp->ic_format.icl_length = cpu_to_be32(length);
icp->ic_format.icl_gen = cpu_to_be32(generation);
xfs_trans_add_item(tp, &icp->ic_item);
tp->t_flags |= XFS_TRANS_DIRTY;
icp->ic_item.li_desc->lid_flags |= XFS_LID_DIRTY;
}
:58 +0100
| commit | 0becc0ae5b42828785b589f686725ff5bc3b9b25 (patch) |
|---|
| tree | be6d0e1f37c38ed0a7dd5da2d4b1e93f0fb43101 /net/decnet/netfilter/dn_rtmsg.c |
|---|
| parent | 24c2503255d35c269b67162c397a1a1c1e02f6ce (diff) |
|---|
x86/mce: Make timer handling more robust
Erik reported that on a preproduction hardware a CMCI storm triggers the
BUG_ON in add_timer_on(). The reason is that the per CPU MCE timer is
started by the CMCI logic before the MCE CPU hotplug callback starts the
timer with add_timer_on(). So the timer is already queued which triggers
the BUG.
Using add_timer_on() is pretty pointless in this code because the timer is
strictlty per CPU, initialized as pinned and all operations which arm the
timer happen on the CPU to which the timer belongs.
Simplify the whole machinery by using mod_timer() instead of add_timer_on()
which avoids the problem because mod_timer() can handle already queued
timers. Use __start_timer() everywhere so the earliest armed expiry time is
preserved.
Reported-by: Erik Veijola <erik.veijola@intel.com>
Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@alien8.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>