https://github.com/torvalds/linux
Revision 0d200aefd4ac51787b6b80de1bb7ce93bccd59f6 authored by Joe Thornber on 03 July 2012, 11:55:31 UTC, committed by Alasdair G Kergon on 03 July 2012, 11:55:31 UTC
Userland sometimes sees a corrupt metadata block if metadata is changing rapidly when a metadata snapshot is reserved for userland, To make the problem go away, commit before we take the metadata snapshot (which is a sensible thing to do anyway). The checksums mean userland spots this corruption immediately so there's no risk of acting on incorrect data. No corruption exists from the kernel's point of view, and thin_check passes after pool shutdown. I believe this is to do with shared blocks at the first level of the {device, mapping} btree. Prior to the metadata-snap support no sharing at this level was possible, so this patch is only required after commit cc8394d86f045b86ff303d3c9e4ce47d97148951 ("dm thin: provide userspace access to pool metadata"). Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
1 parent 6887a41
Tip revision: 0d200aefd4ac51787b6b80de1bb7ce93bccd59f6 authored by Joe Thornber on 03 July 2012, 11:55:31 UTC
dm thin: commit metadata before creating metadata snapshot
dm thin: commit metadata before creating metadata snapshot
Tip revision: 0d200ae
emux_legacy.h
#ifndef __SOUND_EMUX_LEGACY_H
#define __SOUND_EMUX_LEGACY_H
/*
* Copyright (c) 1999-2000 Takashi Iwai <tiwai@suse.de>
*
* Definitions of OSS compatible headers for Emu8000 device informations
*
* 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 02111-1307 USA
*
*/
#include "seq_oss_legacy.h"
/*
* awe hardware controls
*/
#define _EMUX_OSS_DEBUG_MODE 0x00
#define _EMUX_OSS_REVERB_MODE 0x01
#define _EMUX_OSS_CHORUS_MODE 0x02
#define _EMUX_OSS_REMOVE_LAST_SAMPLES 0x03
#define _EMUX_OSS_INITIALIZE_CHIP 0x04
#define _EMUX_OSS_SEND_EFFECT 0x05
#define _EMUX_OSS_TERMINATE_CHANNEL 0x06
#define _EMUX_OSS_TERMINATE_ALL 0x07
#define _EMUX_OSS_INITIAL_VOLUME 0x08
#define _EMUX_OSS_INITIAL_ATTEN _EMUX_OSS_INITIAL_VOLUME
#define _EMUX_OSS_RESET_CHANNEL 0x09
#define _EMUX_OSS_CHANNEL_MODE 0x0a
#define _EMUX_OSS_DRUM_CHANNELS 0x0b
#define _EMUX_OSS_MISC_MODE 0x0c
#define _EMUX_OSS_RELEASE_ALL 0x0d
#define _EMUX_OSS_NOTEOFF_ALL 0x0e
#define _EMUX_OSS_CHN_PRESSURE 0x0f
#define _EMUX_OSS_EQUALIZER 0x11
#define _EMUX_OSS_MODE_FLAG 0x80
#define _EMUX_OSS_COOKED_FLAG 0x40 /* not supported */
#define _EMUX_OSS_MODE_VALUE_MASK 0x3F
/*
* mode type definitions
*/
enum {
/* 0*/ EMUX_MD_EXCLUSIVE_OFF, /* obsolete */
/* 1*/ EMUX_MD_EXCLUSIVE_ON, /* obsolete */
/* 2*/ EMUX_MD_VERSION, /* read only */
/* 3*/ EMUX_MD_EXCLUSIVE_SOUND, /* 0/1: exclusive note on (default=1) */
/* 4*/ EMUX_MD_REALTIME_PAN, /* 0/1: do realtime pan change (default=1) */
/* 5*/ EMUX_MD_GUS_BANK, /* bank number for GUS patches (default=0) */
/* 6*/ EMUX_MD_KEEP_EFFECT, /* 0/1: keep effect values, (default=0) */
/* 7*/ EMUX_MD_ZERO_ATTEN, /* attenuation of max volume (default=32) */
/* 8*/ EMUX_MD_CHN_PRIOR, /* 0/1: set MIDI channel priority mode (default=1) */
/* 9*/ EMUX_MD_MOD_SENSE, /* integer: modwheel sensitivity (def=18) */
/*10*/ EMUX_MD_DEF_PRESET, /* integer: default preset number (def=0) */
/*11*/ EMUX_MD_DEF_BANK, /* integer: default bank number (def=0) */
/*12*/ EMUX_MD_DEF_DRUM, /* integer: default drumset number (def=0) */
/*13*/ EMUX_MD_TOGGLE_DRUM_BANK, /* 0/1: toggle drum flag with bank# (def=0) */
/*14*/ EMUX_MD_NEW_VOLUME_CALC, /* 0/1: volume calculation mode (def=1) */
/*15*/ EMUX_MD_CHORUS_MODE, /* integer: chorus mode (def=2) */
/*16*/ EMUX_MD_REVERB_MODE, /* integer: chorus mode (def=4) */
/*17*/ EMUX_MD_BASS_LEVEL, /* integer: bass level (def=5) */
/*18*/ EMUX_MD_TREBLE_LEVEL, /* integer: treble level (def=9) */
/*19*/ EMUX_MD_DEBUG_MODE, /* integer: debug level (def=0) */
/*20*/ EMUX_MD_PAN_EXCHANGE, /* 0/1: exchange panning direction (def=0) */
EMUX_MD_END,
};
/*
* effect parameters
*/
enum {
/* modulation envelope parameters */
/* 0*/ EMUX_FX_ENV1_DELAY, /* WORD: ENVVAL */
/* 1*/ EMUX_FX_ENV1_ATTACK, /* BYTE: up ATKHLD */
/* 2*/ EMUX_FX_ENV1_HOLD, /* BYTE: lw ATKHLD */
/* 3*/ EMUX_FX_ENV1_DECAY, /* BYTE: lw DCYSUS */
/* 4*/ EMUX_FX_ENV1_RELEASE, /* BYTE: lw DCYSUS */
/* 5*/ EMUX_FX_ENV1_SUSTAIN, /* BYTE: up DCYSUS */
/* 6*/ EMUX_FX_ENV1_PITCH, /* BYTE: up PEFE */
/* 7*/ EMUX_FX_ENV1_CUTOFF, /* BYTE: lw PEFE */
/* volume envelope parameters */
/* 8*/ EMUX_FX_ENV2_DELAY, /* WORD: ENVVOL */
/* 9*/ EMUX_FX_ENV2_ATTACK, /* BYTE: up ATKHLDV */
/*10*/ EMUX_FX_ENV2_HOLD, /* BYTE: lw ATKHLDV */
/*11*/ EMUX_FX_ENV2_DECAY, /* BYTE: lw DCYSUSV */
/*12*/ EMUX_FX_ENV2_RELEASE, /* BYTE: lw DCYSUSV */
/*13*/ EMUX_FX_ENV2_SUSTAIN, /* BYTE: up DCYSUSV */
/* LFO1 (tremolo & vibrato) parameters */
/*14*/ EMUX_FX_LFO1_DELAY, /* WORD: LFO1VAL */
/*15*/ EMUX_FX_LFO1_FREQ, /* BYTE: lo TREMFRQ */
/*16*/ EMUX_FX_LFO1_VOLUME, /* BYTE: up TREMFRQ */
/*17*/ EMUX_FX_LFO1_PITCH, /* BYTE: up FMMOD */
/*18*/ EMUX_FX_LFO1_CUTOFF, /* BYTE: lo FMMOD */
/* LFO2 (vibrato) parameters */
/*19*/ EMUX_FX_LFO2_DELAY, /* WORD: LFO2VAL */
/*20*/ EMUX_FX_LFO2_FREQ, /* BYTE: lo FM2FRQ2 */
/*21*/ EMUX_FX_LFO2_PITCH, /* BYTE: up FM2FRQ2 */
/* Other overall effect parameters */
/*22*/ EMUX_FX_INIT_PITCH, /* SHORT: pitch offset */
/*23*/ EMUX_FX_CHORUS, /* BYTE: chorus effects send (0-255) */
/*24*/ EMUX_FX_REVERB, /* BYTE: reverb effects send (0-255) */
/*25*/ EMUX_FX_CUTOFF, /* BYTE: up IFATN */
/*26*/ EMUX_FX_FILTERQ, /* BYTE: up CCCA */
/* Sample / loop offset changes */
/*27*/ EMUX_FX_SAMPLE_START, /* SHORT: offset */
/*28*/ EMUX_FX_LOOP_START, /* SHORT: offset */
/*29*/ EMUX_FX_LOOP_END, /* SHORT: offset */
/*30*/ EMUX_FX_COARSE_SAMPLE_START, /* SHORT: upper word offset */
/*31*/ EMUX_FX_COARSE_LOOP_START, /* SHORT: upper word offset */
/*32*/ EMUX_FX_COARSE_LOOP_END, /* SHORT: upper word offset */
/*33*/ EMUX_FX_ATTEN, /* BYTE: lo IFATN */
EMUX_FX_END,
};
/* number of effects */
#define EMUX_NUM_EFFECTS EMUX_FX_END
/* effect flag values */
#define EMUX_FX_FLAG_OFF 0
#define EMUX_FX_FLAG_SET 1
#define EMUX_FX_FLAG_ADD 2
#endif /* __SOUND_EMUX_LEGACY_H */
Computing file changes ...