Revision 34b3d5344719d14fd2185b2d9459b3abcb8cf9d8 authored by Petr Mladek on 25 June 2021, 01:39:45 UTC, committed by Linus Torvalds on 25 June 2021, 02:40:54 UTC
Patch series "kthread_worker: Fix race between kthread_mod_delayed_work()
and kthread_cancel_delayed_work_sync()".

This patchset fixes the race between kthread_mod_delayed_work() and
kthread_cancel_delayed_work_sync() including proper return value
handling.

This patch (of 2):

Simple code refactoring as a preparation step for fixing a race between
kthread_mod_delayed_work() and kthread_cancel_delayed_work_sync().

It does not modify the existing behavior.

Link: https://lkml.kernel.org/r/20210610133051.15337-2-pmladek@suse.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
Cc: <jenhaochen@google.com>
Cc: Martin Liu <liumartin@google.com>
Cc: Minchan Kim <minchan@google.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 7ca3027
Raw File
xfs_fsmap.h
// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2017 Oracle.  All Rights Reserved.
 * Author: Darrick J. Wong <darrick.wong@oracle.com>
 */
#ifndef __XFS_FSMAP_H__
#define __XFS_FSMAP_H__

struct fsmap;

/* internal fsmap representation */
struct xfs_fsmap {
	dev_t		fmr_device;	/* device id */
	uint32_t	fmr_flags;	/* mapping flags */
	uint64_t	fmr_physical;	/* device offset of segment */
	uint64_t	fmr_owner;	/* owner id */
	xfs_fileoff_t	fmr_offset;	/* file offset of segment */
	xfs_filblks_t	fmr_length;	/* length of segment, blocks */
};

struct xfs_fsmap_head {
	uint32_t	fmh_iflags;	/* control flags */
	uint32_t	fmh_oflags;	/* output flags */
	unsigned int	fmh_count;	/* # of entries in array incl. input */
	unsigned int	fmh_entries;	/* # of entries filled in (output). */

	struct xfs_fsmap fmh_keys[2];	/* low and high keys */
};

void xfs_fsmap_to_internal(struct xfs_fsmap *dest, struct fsmap *src);

int xfs_getfsmap(struct xfs_mount *mp, struct xfs_fsmap_head *head,
		struct fsmap *out_recs);

#endif /* __XFS_FSMAP_H__ */
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