diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/bio.h | 33 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 16 | ||||
| -rw-r--r-- | include/linux/blktrace_api.h | 32 | ||||
| -rw-r--r-- | include/linux/dvb/frontend.h | 2 | ||||
| -rw-r--r-- | include/linux/i2c-id.h | 2 | ||||
| -rw-r--r-- | include/linux/interrupt.h | 21 | ||||
| -rw-r--r-- | include/linux/jbd2.h | 9 | ||||
| -rw-r--r-- | include/linux/kernel.h | 1 | ||||
| -rw-r--r-- | include/linux/smp.h | 4 | ||||
| -rw-r--r-- | include/linux/usb.h | 7 | ||||
| -rw-r--r-- | include/linux/usb/Kbuild | 3 | ||||
| -rw-r--r-- | include/linux/usb/cdc.h | 9 | ||||
| -rw-r--r-- | include/linux/usb/composite.h | 11 | ||||
| -rw-r--r-- | include/linux/usb/serial.h | 2 | ||||
| -rw-r--r-- | include/linux/usb/tmc.h | 43 | ||||
| -rw-r--r-- | include/linux/usb/vstusb.h | 71 | ||||
| -rw-r--r-- | include/linux/writeback.h | 10 |
17 files changed, 256 insertions, 20 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index ff5b4cf..1c91a17 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -79,6 +79,13 @@ struct bio { unsigned int bi_size; /* residual I/O count */ + /* + * To keep track of the max segment size, we account for the + * sizes of the first and last mergeable segments in this bio. + */ + unsigned int bi_seg_front_size; + unsigned int bi_seg_back_size; + unsigned int bi_max_vecs; /* max bvl_vecs we can hold */ unsigned int bi_comp_cpu; /* completion CPU */ @@ -129,25 +136,30 @@ struct bio { * bit 2 -- barrier * Insert a serialization point in the IO queue, forcing previously * submitted IO to be completed before this oen is issued. - * bit 3 -- fail fast, don't want low level driver retries - * bit 4 -- synchronous I/O hint: the block layer will unplug immediately + * bit 3 -- synchronous I/O hint: the block layer will unplug immediately * Note that this does NOT indicate that the IO itself is sync, just * that the block layer will not postpone issue of this IO by plugging. - * bit 5 -- metadata request + * bit 4 -- metadata request * Used for tracing to differentiate metadata and data IO. May also * get some preferential treatment in the IO scheduler - * bit 6 -- discard sectors + * bit 5 -- discard sectors * Informs the lower level device that this range of sectors is no longer * used by the file system and may thus be freed by the device. Used * for flash based storage. + * bit 6 -- fail fast device errors + * bit 7 -- fail fast transport errors + * bit 8 -- fail fast driver errors + * Don't want driver retries for any fast fail whatever the reason. */ #define BIO_RW 0 /* Must match RW in req flags (blkdev.h) */ #define BIO_RW_AHEAD 1 /* Must match FAILFAST in req flags */ #define BIO_RW_BARRIER 2 -#define BIO_RW_FAILFAST 3 -#define BIO_RW_SYNC 4 -#define BIO_RW_META 5 -#define BIO_RW_DISCARD 6 +#define BIO_RW_SYNC 3 +#define BIO_RW_META 4 +#define BIO_RW_DISCARD 5 +#define BIO_RW_FAILFAST_DEV 6 +#define BIO_RW_FAILFAST_TRANSPORT 7 +#define BIO_RW_FAILFAST_DRIVER 8 /* * upper 16 bits of bi_rw define the io priority of this bio @@ -174,7 +186,10 @@ struct bio { #define bio_sectors(bio) ((bio)->bi_size >> 9) #define bio_barrier(bio) ((bio)->bi_rw & (1 << BIO_RW_BARRIER)) #define bio_sync(bio) ((bio)->bi_rw & (1 << BIO_RW_SYNC)) -#define bio_failfast(bio) ((bio)->bi_rw & (1 << BIO_RW_FAILFAST)) +#define bio_failfast_dev(bio) ((bio)->bi_rw & (1 << BIO_RW_FAILFAST_DEV)) +#define bio_failfast_transport(bio) \ + ((bio)->bi_rw & (1 << BIO_RW_FAILFAST_TRANSPORT)) +#define bio_failfast_driver(bio) ((bio)->bi_rw & (1 << BIO_RW_FAILFAST_DRIVER)) #define bio_rw_ahead(bio) ((bio)->bi_rw & (1 << BIO_RW_AHEAD)) #define bio_rw_meta(bio) ((bio)->bi_rw & (1 << BIO_RW_META)) #define bio_discard(bio) ((bio)->bi_rw & (1 << BIO_RW_DISCARD)) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index a92d9e4..b4fe68f 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -87,7 +87,9 @@ enum { */ enum rq_flag_bits { __REQ_RW, /* not set, read. set, write */ - __REQ_FAILFAST, /* no low level driver retries */ + __REQ_FAILFAST_DEV, /* no driver retries of device errors */ + __REQ_FAILFAST_TRANSPORT, /* no driver retries of transport errors */ + __REQ_FAILFAST_DRIVER, /* no driver retries of driver errors */ __REQ_DISCARD, /* request to discard sectors */ __REQ_SORTED, /* elevator knows about this request */ __REQ_SOFTBARRIER, /* may not be passed by ioscheduler */ @@ -111,8 +113,10 @@ enum rq_flag_bits { }; #define REQ_RW (1 << __REQ_RW) +#define REQ_FAILFAST_DEV (1 << __REQ_FAILFAST_DEV) +#define REQ_FAILFAST_TRANSPORT (1 << __REQ_FAILFAST_TRANSPORT) +#define REQ_FAILFAST_DRIVER (1 << __REQ_FAILFAST_DRIVER) #define REQ_DISCARD (1 << __REQ_DISCARD) -#define REQ_FAILFAST (1 << __REQ_FAILFAST) #define REQ_SORTED (1 << __REQ_SORTED) #define REQ_SOFTBARRIER (1 << __REQ_SOFTBARRIER) #define REQ_HARDBARRIER (1 << __REQ_HARDBARRIER) @@ -560,7 +564,12 @@ enum { #define blk_special_request(rq) ((rq)->cmd_type == REQ_TYPE_SPECIAL) #define blk_sense_request(rq) ((rq)->cmd_type == REQ_TYPE_SENSE) -#define blk_noretry_request(rq) ((rq)->cmd_flags & REQ_FAILFAST) +#define blk_failfast_dev(rq) ((rq)->cmd_flags & REQ_FAILFAST_DEV) +#define blk_failfast_transport(rq) ((rq)->cmd_flags & REQ_FAILFAST_TRANSPORT) +#define blk_failfast_driver(rq) ((rq)->cmd_flags & REQ_FAILFAST_DRIVER) +#define blk_noretry_request(rq) (blk_failfast_dev(rq) || \ + blk_failfast_transport(rq) || \ + blk_failfast_driver(rq)) #define blk_rq_started(rq) ((rq)->cmd_flags & REQ_STARTED) #define blk_account_rq(rq) (blk_rq_started(rq) && (blk_fs_request(rq) || blk_discard_rq(rq))) @@ -856,7 +865,6 @@ extern void blk_ordered_complete_seq(struct request_queue *, unsigned, int); extern int blk_rq_map_sg(struct request_queue *, struct request *, struct scatterlist *); extern void blk_dump_rq_flags(struct request *, char *); extern void generic_unplug_device(struct request_queue *); -extern void __generic_unplug_device(struct request_queue *); extern long nr_blockdev_pages(void); int blk_get_queue(struct request_queue *); diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h index 3a31eb5..bdf505d 100644 --- a/include/linux/blktrace_api.h +++ b/include/linux/blktrace_api.h @@ -24,6 +24,7 @@ enum blktrace_cat { BLK_TC_AHEAD = 1 << 11, /* readahead */ BLK_TC_META = 1 << 12, /* metadata */ BLK_TC_DISCARD = 1 << 13, /* discard requests */ + BLK_TC_DRV_DATA = 1 << 14, /* binary per-driver data */ BLK_TC_END = 1 << 15, /* only 16-bits, reminder */ }; @@ -51,6 +52,7 @@ enum blktrace_act { __BLK_TA_BOUNCE, /* bio was bounced */ __BLK_TA_REMAP, /* bio was remapped */ __BLK_TA_ABORT, /* request aborted */ + __BLK_TA_DRV_DATA, /* driver-specific binary data */ }; /* @@ -82,6 +84,7 @@ enum blktrace_notify { #define BLK_TA_BOUNCE (__BLK_TA_BOUNCE) #define BLK_TA_REMAP (__BLK_TA_REMAP | BLK_TC_ACT(BLK_TC_QUEUE)) #define BLK_TA_ABORT (__BLK_TA_ABORT | BLK_TC_ACT(BLK_TC_QUEUE)) +#define BLK_TA_DRV_DATA (__BLK_TA_DRV_DATA | BLK_TC_ACT(BLK_TC_DRV_DATA)) #define BLK_TN_PROCESS (__BLK_TN_PROCESS | BLK_TC_ACT(BLK_TC_NOTIFY)) #define BLK_TN_TIMESTAMP (__BLK_TN_TIMESTAMP | BLK_TC_ACT(BLK_TC_NOTIFY)) @@ -317,6 +320,34 @@ static inline void blk_add_trace_remap(struct request_queue *q, struct bio *bio, __blk_add_trace(bt, from, bio->bi_size, bio->bi_rw, BLK_TA_REMAP, !bio_flagged(bio, BIO_UPTODATE), sizeof(r), &r); } +/** + * blk_add_driver_data - Add binary message with driver-specific data + * @q: queue the io is for + * @rq: io request + * @data: driver-specific data + * @len: length of driver-specific data + * + * Description: + * Some drivers might want to write driver-specific data per request. + * + **/ +static inline void blk_add_driver_data(struct request_queue *q, + struct request *rq, + void *data, size_t len) +{ + struct blk_trace *bt = q->blk_trace; + + if (likely(!bt)) + return; + + if (blk_pc_request(rq)) + __blk_add_trace(bt, 0, rq->data_len, 0, BLK_TA_DRV_DATA, + rq->errors, len, data); + else + __blk_add_trace(bt, rq->hard_sector, rq->hard_nr_sectors << 9, + 0, BLK_TA_DRV_DATA, rq->errors, len, data); +} + extern int blk_trace_setup(struct request_queue *q, char *name, dev_t dev, char __user *arg); extern int blk_trace_startstop(struct request_queue *q, int start); @@ -330,6 +361,7 @@ extern int blk_trace_remove(struct request_queue *q); #define blk_add_trace_generic(q, rq, rw, what) do { } while (0) #define blk_add_trace_pdu_int(q, what, bio, pdu) do { } while (0) #define blk_add_trace_remap(q, bio, dev, f, t) do {} while (0) +#define blk_add_driver_data(q, rq, data, len) do {} while (0) #define do_blk_trace_setup(q, name, dev, buts) (-ENOTTY) #define blk_trace_setup(q, name, dev, arg) (-ENOTTY) #define blk_trace_startstop(q, start) (-ENOTTY) diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h index 6e4ace2..79a8ed8 100644 --- a/include/linux/dvb/frontend.h +++ b/include/linux/dvb/frontend.h @@ -166,6 +166,7 @@ typedef enum fe_modulation { VSB_16, PSK_8, APSK_16, + APSK_32, DQPSK, } fe_modulation_t; @@ -295,6 +296,7 @@ typedef enum fe_delivery_system { SYS_DVBC_ANNEX_AC, SYS_DVBC_ANNEX_B, SYS_DVBT, + SYS_DSS, SYS_DVBS, SYS_DVBS2, SYS_DVBH, diff --git a/include/linux/i2c-id.h b/include/linux/i2c-id.h index 493435b..01d67ba 100644 --- a/include/linux/i2c-id.h +++ b/include/linux/i2c-id.h @@ -60,7 +60,7 @@ #define I2C_DRIVERID_WM8775 69 /* wm8775 audio processor */ #define I2C_DRIVERID_CS53L32A 70 /* cs53l32a audio processor */ #define I2C_DRIVERID_CX25840 71 /* cx2584x video encoder */ -#define I2C_DRIVERID_SAA7127 72 /* saa7124 video encoder */ +#define I2C_DRIVERID_SAA7127 72 /* saa7127 video encoder */ #define I2C_DRIVERID_SAA711X 73 /* saa711x video encoders */ #define I2C_DRIVERID_AKITAIOEXP 74 /* IO Expander on Sharp SL-C1000 */ #define I2C_DRIVERID_INFRARED 75 /* I2C InfraRed on Video boards */ diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 54b3623..35a61dc 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -11,6 +11,8 @@ #include <linux/hardirq.h> #include <linux/sched.h> #include <linux/irqflags.h> +#include <linux/smp.h> +#include <linux/percpu.h> #include <asm/atomic.h> #include <asm/ptrace.h> #include <asm/system.h> @@ -273,6 +275,25 @@ extern void softirq_init(void); extern void raise_softirq_irqoff(unsigned int nr); extern void raise_softirq(unsigned int nr); +/* This is the worklist that queues up per-cpu softirq work. + * + * send_remote_sendirq() adds work to these lists, and + * the softirq handler itself dequeues from them. The queues + * are protected by disabling local cpu interrupts and they must + * only be accessed by the local cpu that they are for. + */ +DECLARE_PER_CPU(struct list_head [NR_SOFTIRQS], softirq_work_list); + +/* Try to send a softirq to a remote cpu. If this cannot be done, the + * work will be queued to the local cpu. + */ +extern void send_remote_softirq(struct call_single_data *cp, int cpu, int softirq); + +/* Like send_remote_softirq(), but the caller must disable local cpu interrupts + * and compute the current cpu, passed in as 'this_cpu'. + */ +extern void __send_remote_softirq(struct call_single_data *cp, int cpu, + int this_cpu, int softirq); /* Tasklets --- multithreaded analogue of BHs. diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 463d6f1..c7d106e 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -641,6 +641,11 @@ struct transaction_s */ int t_handle_count; + /* + * For use by the filesystem to store fs-specific data + * structures associated with the transaction + */ + struct list_head t_private_list; }; struct transaction_run_stats_s { @@ -935,6 +940,10 @@ struct journal_s pid_t j_last_sync_writer; + /* This function is called when a transaction is closed */ + void (*j_commit_callback)(journal_t *, + transaction_t *); + /* * Journal statistics */ diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 6803318..5a566b7 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -265,6 +265,7 @@ extern enum system_states { #define TAINT_DIE 7 #define TAINT_OVERRIDDEN_ACPI_TABLE 8 #define TAINT_WARN 9 +#define TAINT_CRAP 10 extern void dump_stack(void) __cold; diff --git a/include/linux/smp.h b/include/linux/smp.h index 66484d4..2e4d58b 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -7,6 +7,7 @@ */ #include <linux/errno.h> +#include <linux/types.h> #include <linux/list.h> #include <linux/cpumask.h> @@ -16,7 +17,8 @@ struct call_single_data { struct list_head list; void (*func) (void *info); void *info; - unsigned int flags; + u16 flags; + u16 priv; }; #ifdef CONFIG_SMP diff --git a/include/linux/usb.h b/include/linux/usb.h index 94ac74a..8fa973b 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -1135,6 +1135,7 @@ struct usb_anchor { struct list_head urb_list; wait_queue_head_t wait; spinlock_t lock; + unsigned int poisoned:1; }; static inline void init_usb_anchor(struct usb_anchor *anchor) @@ -1459,12 +1460,18 @@ extern struct urb *usb_get_urb(struct urb *urb); extern int usb_submit_urb(struct urb *urb, gfp_t mem_flags); extern int usb_unlink_urb(struct urb *urb); extern void usb_kill_urb(struct urb *urb); +extern void usb_poison_urb(struct urb *urb); +extern void usb_unpoison_urb(struct urb *urb); extern void usb_kill_anchored_urbs(struct usb_anchor *anchor); +extern void usb_poison_anchored_urbs(struct usb_anchor *anchor); extern void usb_unlink_anchored_urbs(struct usb_anchor *anchor); extern void usb_anchor_urb(struct urb *urb, struct usb_anchor *anchor); extern void usb_unanchor_urb(struct urb *urb); extern int usb_wait_anchor_empty_timeout(struct usb_anchor *anchor, unsigned int timeout); +extern struct urb *usb_get_from_anchor(struct usb_anchor *anchor); +extern void usb_scuttle_anchored_urbs(struct usb_anchor *anchor); +extern int usb_anchor_empty(struct usb_anchor *anchor); /** * usb_urb_dir_in - check if an URB describes an IN transfer diff --git a/include/linux/usb/Kbuild b/include/linux/usb/Kbuild index 42e84fc..54c4463 100644 --- a/include/linux/usb/Kbuild +++ b/include/linux/usb/Kbuild @@ -4,4 +4,5 @@ header-y += ch9.h header-y += gadgetfs.h header-y += midi.h header-y += g_printer.h - +header-y += tmc.h +header-y += vstusb.h diff --git a/include/linux/usb/cdc.h b/include/linux/usb/cdc.h index ca228bb..18a7293 100644 --- a/include/linux/usb/cdc.h +++ b/include/linux/usb/cdc.h @@ -160,6 +160,15 @@ struct usb_cdc_mdlm_detail_desc { __u8 bDetailData[0]; } __attribute__ ((packed)); +/* "OBEX Control Model Functional Descriptor" */ +struct usb_cdc_obex_desc { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + + __le16 bcdVersion; +} __attribute__ ((packed)); + /*-------------------------------------------------------------------------*/ /* diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index c932390..935c380 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -130,6 +130,9 @@ struct usb_function { int usb_add_function(struct usb_configuration *, struct usb_function *); +int usb_function_deactivate(struct usb_function *); +int usb_function_activate(struct usb_function *); + int usb_interface_id(struct usb_configuration *, struct usb_function *); /** @@ -316,9 +319,13 @@ struct usb_composite_dev { struct usb_composite_driver *driver; u8 next_string_id; - spinlock_t lock; + /* the gadget driver won't enable the data pullup + * while the deactivation count is nonzero. + */ + unsigned deactivations; - /* REVISIT use and existence of lock ... */ + /* protects at least deactivation count */ + spinlock_t lock; }; extern int usb_string_id(struct usb_composite_dev *c); diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index 655341d..0b8617a 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -192,7 +192,7 @@ static inline void usb_set_serial_data(struct usb_serial *serial, void *data) * The driver.owner field should be set to the module owner of this driver. * The driver.name field should be set to the name of this driver (remember * it will show up in sysfs, so it needs to be short and to the point. - * Useing the module name is a good idea.) + * Using the module name is a good idea.) */ struct usb_serial_driver { const char *description; diff --git a/include/linux/usb/tmc.h b/include/linux/usb/tmc.h new file mode 100644 index 0000000..c045ae1 --- /dev/null +++ b/include/linux/usb/tmc.h @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2007 Stefan Kopp, Gechingen, Germany + * Copyright (C) 2008 Novell, Inc. + * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de> + * + * This file holds USB constants defined by the USB Device Class + * Definition for Test and Measurement devices published by the USB-IF. + * + * It also has the ioctl definitions for the usbtmc kernel driver that + * userspace needs to know about. + */ + +#ifndef __LINUX_USB_TMC_H +#define __LINUX_USB_TMC_H + +/* USB TMC status values */ +#define USBTMC_STATUS_SUCCESS 0x01 +#define USBTMC_STATUS_PENDING 0x02 +#define USBTMC_STATUS_FAILED 0x80 +#define USBTMC_STATUS_TRANSFER_NOT_IN_PROGRESS 0x81 +#define USBTMC_STATUS_SPLIT_NOT_IN_PROGRESS 0x82 +#define USBTMC_STATUS_SPLIT_IN_PROGRESS 0x83 + +/* USB TMC requests values */ +#define USBTMC_REQUEST_INITIATE_ABORT_BULK_OUT 1 +#define USBTMC_REQUEST_CHECK_ABORT_BULK_OUT_STATUS 2 +#define USBTMC_REQUEST_INITIATE_ABORT_BULK_IN 3 +#define USBTMC_REQUEST_CHECK_ABORT_BULK_IN_STATUS 4 +#define USBTMC_REQUEST_INITIATE_CLEAR 5 +#define USBTMC_REQUEST_CHECK_CLEAR_STATUS 6 +#define USBTMC_REQUEST_GET_CAPABILITIES 7 +#define USBTMC_REQUEST_INDICATOR_PULSE 64 + +/* Request values for USBTMC driver's ioctl entry point */ +#define USBTMC_IOC_NR 91 +#define USBTMC_IOCTL_INDICATOR_PULSE _IO(USBTMC_IOC_NR, 1) +#define USBTMC_IOCTL_CLEAR _IO(USBTMC_IOC_NR, 2) +#define USBTMC_IOCTL_ABORT_BULK_OUT _IO(USBTMC_IOC_NR, 3) +#define USBTMC_IOCTL_ABORT_BULK_IN _IO(USBTMC_IOC_NR, 4) +#define USBTMC_IOCTL_CLEAR_OUT_HALT _IO(USBTMC_IOC_NR, 6) +#define USBTMC_IOCTL_CLEAR_IN_HALT _IO(USBTMC_IOC_NR, 7) + +#endif diff --git a/include/linux/usb/vstusb.h b/include/linux/usb/vstusb.h new file mode 100644 index 0000000..1cfac67 --- /dev/null +++ b/include/linux/usb/vstusb.h @@ -0,0 +1,71 @@ +/***************************************************************************** + * File: drivers/usb/misc/vstusb.h + * + * Purpose: Support for the bulk USB Vernier Spectrophotometers + * + * Author: EQware Engineering, Inc. + * Oregon City, OR, USA 97045 + * + * Copyright: 2007, 2008 + * Vernier Software & Technology + * Beaverton, OR, USA 97005 + * + * Web: www.vernier.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + *****************************************************************************/ +/***************************************************************************** + * + * The vstusb module is a standard usb 'client' driver running on top of the + * standard usb host controller stack. + * + * In general, vstusb supports standard bulk usb pipes. It supports multiple + * devices and multiple pipes per device. + * + * The vstusb driver supports two interfaces: + * 1 - ioctl SEND_PIPE/RECV_PIPE - a general bulk write/read msg + * interface to any pipe with timeout support; + * 2 - standard read/write with ioctl config - offers standard read/write + * interface with ioctl configured pipes and timeouts. + * + * Both interfaces can be signal from other process and will abort its i/o + * operation. + * + * A timeout of 0 means NO timeout. The user can still terminate the read via + * signal. + * + * If using multiple threads with this driver, the user should ensure that + * any reads, writes, or ioctls are complete before closing the device. + * Changing read/write timeouts or pipes takes effect on next read/write. + * + *****************************************************************************/ + +struct vstusb_args { + union { + /* this struct is used for IOCTL_VSTUSB_SEND_PIPE, * + * IOCTL_VSTUSB_RECV_PIPE, and read()/write() fops */ + struct { + void __user *buffer; + size_t count; + unsigned int timeout_ms; + int pipe; + }; + + /* this one is used for IOCTL_VSTUSB_CONFIG_RW */ + struct { + int rd_pipe; + int rd_timeout_ms; + int wr_pipe; + int wr_timeout_ms; + }; + }; +}; + +#define VST_IOC_MAGIC 'L' +#define VST_IOC_FIRST 0x20 +#define IOCTL_VSTUSB_SEND_PIPE _IO(VST_IOC_MAGIC, VST_IOC_FIRST) +#define IOCTL_VSTUSB_RECV_PIPE _IO(VST_IOC_MAGIC, VST_IOC_FIRST + 1) +#define IOCTL_VSTUSB_CONFIG_RW _IO(VST_IOC_MAGIC, VST_IOC_FIRST + 2) diff --git a/include/linux/writeback.h b/include/linux/writeback.h index 12b15c5..e585657 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -63,7 +63,15 @@ struct writeback_control { unsigned for_writepages:1; /* This is a writepages() call */ unsigned range_cyclic:1; /* range_start is cyclic */ unsigned more_io:1; /* more io to be dispatched */ - unsigned range_cont:1; + /* + * write_cache_pages() won't update wbc->nr_to_write and + * mapping->writeback_index if no_nrwrite_index_update + * is set. write_cache_pages() may write more than we + * requested and we want to make sure nr_to_write and + * writeback_index are updated in a consistent manner + * so we use a single control to update them + */ + unsigned no_nrwrite_index_update:1; }; /* |
