diff options
author | David Woodhouse <dwmw2@infradead.org> | 2007-08-01 11:23:57 +0100 |
---|---|---|
committer | David Woodhouse <dwmw2@infradead.org> | 2007-08-01 11:23:57 +0100 |
commit | 440fdb53b4ae58602711b5b8c3a139ace2404dbb (patch) | |
tree | c6fb88d6ad537ec53aeecadc75a61ab6147d4c9c /drivers/block | |
parent | 8b2b403ce0f1a816b7a6a4f47c8798003b26c07a (diff) | |
parent | 8d4fbcfbe0a4bfc73e7f0297c59ae514e1f1436f (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'drivers/block')
-rw-r--r-- | drivers/block/Makefile | 2 | ||||
-rw-r--r-- | drivers/block/amiflop.c | 2 | ||||
-rw-r--r-- | drivers/block/aoe/aoe.h | 2 | ||||
-rw-r--r-- | drivers/block/aoe/aoeblk.c | 2 | ||||
-rw-r--r-- | drivers/block/ataflop.c | 2 | ||||
-rw-r--r-- | drivers/block/cciss.c | 15 | ||||
-rw-r--r-- | drivers/block/cpqarray.c | 6 | ||||
-rw-r--r-- | drivers/block/floppy.c | 4 | ||||
-rw-r--r-- | drivers/block/lguest_blk.c | 171 | ||||
-rw-r--r-- | drivers/block/loop.c | 4 | ||||
-rw-r--r-- | drivers/block/nbd.c | 4 | ||||
-rw-r--r-- | drivers/block/paride/pcd.c | 4 | ||||
-rw-r--r-- | drivers/block/paride/pd.c | 2 | ||||
-rw-r--r-- | drivers/block/paride/pf.c | 4 | ||||
-rw-r--r-- | drivers/block/pktcdvd.c | 12 | ||||
-rw-r--r-- | drivers/block/ps2esdi.c | 4 | ||||
-rw-r--r-- | drivers/block/ps3disk.c | 8 | ||||
-rw-r--r-- | drivers/block/rd.c | 2 | ||||
-rw-r--r-- | drivers/block/sunvdc.c | 2 | ||||
-rw-r--r-- | drivers/block/swim3.c | 4 | ||||
-rw-r--r-- | drivers/block/sx8.c | 20 | ||||
-rw-r--r-- | drivers/block/ub.c | 6 | ||||
-rw-r--r-- | drivers/block/umem.c | 6 | ||||
-rw-r--r-- | drivers/block/viodasd.c | 2 | ||||
-rw-r--r-- | drivers/block/xd.c | 2 | ||||
-rw-r--r-- | drivers/block/xd.h | 2 | ||||
-rw-r--r-- | drivers/block/xen-blkfront.c | 4 | ||||
-rw-r--r-- | drivers/block/xsysace.c | 4 | ||||
-rw-r--r-- | drivers/block/z2ram.c | 2 |
29 files changed, 226 insertions, 78 deletions
diff --git a/drivers/block/Makefile b/drivers/block/Makefile index a7a099027fca..014e72121b5a 100644 --- a/drivers/block/Makefile +++ b/drivers/block/Makefile @@ -31,4 +31,4 @@ obj-$(CONFIG_BLK_DEV_SX8) += sx8.o obj-$(CONFIG_BLK_DEV_UB) += ub.o obj-$(CONFIG_XEN_BLKDEV_FRONTEND) += xen-blkfront.o -obj-$(CONFIG_LGUEST_GUEST) += lguest_blk.o +obj-$(CONFIG_LGUEST_BLOCK) += lguest_blk.o diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c index 6ce8b897e262..c9751b2b57e6 100644 --- a/drivers/block/amiflop.c +++ b/drivers/block/amiflop.c @@ -1422,7 +1422,7 @@ static void redo_fd_request(void) goto repeat; } -static void do_fd_request(request_queue_t * q) +static void do_fd_request(struct request_queue * q) { redo_fd_request(); } diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h index 1d8466817943..ba07f762c4cb 100644 --- a/drivers/block/aoe/aoe.h +++ b/drivers/block/aoe/aoe.h @@ -138,7 +138,7 @@ struct aoedev { u16 maxbcnt; struct work_struct work;/* disk create work struct */ struct gendisk *gd; - request_queue_t blkq; + struct request_queue blkq; struct hd_geometry geo; sector_t ssize; struct timer_list timer; diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index 4f598270fa31..007faaf008e7 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -125,7 +125,7 @@ aoeblk_release(struct inode *inode, struct file *filp) } static int -aoeblk_make_request(request_queue_t *q, struct bio *bio) +aoeblk_make_request(struct request_queue *q, struct bio *bio) { struct aoedev *d; struct buf *buf; diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c index 14d6b9492750..94268c75d04f 100644 --- a/drivers/block/ataflop.c +++ b/drivers/block/ataflop.c @@ -1466,7 +1466,7 @@ repeat: } -void do_fd_request(request_queue_t * q) +void do_fd_request(struct request_queue * q) { unsigned long flags; diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index a2d6612b80d2..a11b2bd54bbe 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -139,7 +139,7 @@ static struct board_type products[] = { static ctlr_info_t *hba[MAX_CTLR]; -static void do_cciss_request(request_queue_t *q); +static void do_cciss_request(struct request_queue *q); static irqreturn_t do_cciss_intr(int irq, void *dev_id); static int cciss_open(struct inode *inode, struct file *filep); static int cciss_release(struct inode *inode, struct file *filep); @@ -1584,7 +1584,7 @@ static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, */ if (h->gendisk[0] != disk) { if (disk) { - request_queue_t *q = disk->queue; + struct request_queue *q = disk->queue; if (disk->flags & GENHD_FL_UP) del_gendisk(disk); if (q) { @@ -2511,7 +2511,7 @@ after_error_processing: /* * Get a request and submit it to the controller. */ -static void do_cciss_request(request_queue_t *q) +static void do_cciss_request(struct request_queue *q) { ctlr_info_t *h = q->queuedata; CommandList_struct *c; @@ -3227,12 +3227,15 @@ static int alloc_cciss_hba(void) for (i = 0; i < MAX_CTLR; i++) { if (!hba[i]) { ctlr_info_t *p; + p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); if (!p) goto Enomem; p->gendisk[0] = alloc_disk(1 << NWD_SHIFT); - if (!p->gendisk[0]) + if (!p->gendisk[0]) { + kfree(p); goto Enomem; + } hba[i] = p; return i; } @@ -3380,7 +3383,7 @@ static int __devinit cciss_init_one(struct pci_dev *pdev, do { drive_info_struct *drv = &(hba[i]->drv[j]); struct gendisk *disk = hba[i]->gendisk[j]; - request_queue_t *q; + struct request_queue *q; /* Check if the disk was allocated already */ if (!disk){ @@ -3523,7 +3526,7 @@ static void __devexit cciss_remove_one(struct pci_dev *pdev) for (j = 0; j < CISS_MAX_LUN; j++) { struct gendisk *disk = hba[i]->gendisk[j]; if (disk) { - request_queue_t *q = disk->queue; + struct request_queue *q = disk->queue; if (disk->flags & GENHD_FL_UP) del_gendisk(disk); diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c index b94cd1c32131..be4e3477d83b 100644 --- a/drivers/block/cpqarray.c +++ b/drivers/block/cpqarray.c @@ -161,7 +161,7 @@ static int ida_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, static int ida_getgeo(struct block_device *bdev, struct hd_geometry *geo); static int ida_ctlr_ioctl(ctlr_info_t *h, int dsk, ida_ioctl_t *io); -static void do_ida_request(request_queue_t *q); +static void do_ida_request(struct request_queue *q); static void start_io(ctlr_info_t *h); static inline void addQ(cmdlist_t **Qptr, cmdlist_t *c); @@ -391,7 +391,7 @@ static void __devexit cpqarray_remove_one_eisa (int i) /* pdev is NULL for eisa */ static int __init cpqarray_register_ctlr( int i, struct pci_dev *pdev) { - request_queue_t *q; + struct request_queue *q; int j; /* @@ -886,7 +886,7 @@ static inline cmdlist_t *removeQ(cmdlist_t **Qptr, cmdlist_t *c) * are in here (either via the dummy do_ida_request functions or by being * called from the interrupt handler */ -static void do_ida_request(request_queue_t *q) +static void do_ida_request(struct request_queue *q) { ctlr_info_t *h = q->queuedata; cmdlist_t *c; diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index fe088045dd08..085b7794fb3e 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -251,7 +251,7 @@ static int irqdma_allocated; static struct request *current_req; static struct request_queue *floppy_queue; -static void do_fd_request(request_queue_t * q); +static void do_fd_request(struct request_queue * q); #ifndef fd_get_dma_residue #define fd_get_dma_residue() get_dma_residue(FLOPPY_DMA) @@ -2981,7 +2981,7 @@ static void process_fd_request(void) schedule_bh(redo_fd_request); } -static void do_fd_request(request_queue_t * q) +static void do_fd_request(struct request_queue * q) { if (max_buffer_sectors == 0) { printk("VFS: do_fd_request called on non-open device\n"); diff --git a/drivers/block/lguest_blk.c b/drivers/block/lguest_blk.c index 1634c2dd25ec..93e3c4001bf5 100644 --- a/drivers/block/lguest_blk.c +++ b/drivers/block/lguest_blk.c @@ -1,6 +1,12 @@ -/* A simple block driver for lguest. +/*D:400 + * The Guest block driver * - * Copyright 2006 Rusty Russell <rusty@rustcorp.com.au> IBM Corporation + * This is a simple block driver, which appears as /dev/lgba, lgbb, lgbc etc. + * The mechanism is simple: we place the information about the request in the + * device page, then use SEND_DMA (containing the data for a write, or an empty + * "ping" DMA for a read). + :*/ +/* Copyright 2006 Rusty Russell <rusty@rustcorp.com.au> IBM Corporation * * 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 @@ -25,27 +31,50 @@ static char next_block_index = 'a'; +/*D:420 Here is the structure which holds all the information we need about + * each Guest block device. + * + * I'm sure at this stage, you're wondering "hey, where was the adventure I was + * promised?" and thinking "Rusty sucks, I shall say nasty things about him on + * my blog". I think Real adventures have boring bits, too, and you're in the + * middle of one. But it gets better. Just not quite yet. */ struct blockdev { + /* The block queue infrastructure wants a spinlock: it is held while it + * calls our block request function. We grab it in our interrupt + * handler so the responses don't mess with new requests. */ spinlock_t lock; - /* The disk structure for the kernel. */ + /* The disk structure registered with kernel. */ struct gendisk *disk; - /* The major number for this disk. */ + /* The major device number for this disk, and the interrupt. We only + * really keep them here for completeness; we'd need them if we + * supported device unplugging. */ int major; int irq; + /* The physical address of this device's memory page */ unsigned long phys_addr; - /* The mapped block page. */ + /* The mapped memory page for convenient acces. */ struct lguest_block_page *lb_page; - /* We only have a single request outstanding at a time. */ + /* We only have a single request outstanding at a time: this is it. */ struct lguest_dma dma; struct request *req; }; -/* Jens gave me this nice helper to end all chunks of a request. */ +/*D:495 We originally used end_request() throughout the driver, but it turns + * out that end_request() is deprecated, and doesn't actually end the request + * (which seems like a good reason to deprecate it!). It simply ends the first + * bio. So if we had 3 bios in a "struct request" we would do all 3, + * end_request(), do 2, end_request(), do 1 and end_request(): twice as much + * work as we needed to do. + * + * This reinforced to me that I do not understand the block layer. + * + * Nonetheless, Jens Axboe gave me this nice helper to end all chunks of a + * request. This improved disk speed by 130%. */ static void end_entire_request(struct request *req, int uptodate) { if (end_that_request_first(req, uptodate, req->hard_nr_sectors)) @@ -55,30 +84,62 @@ static void end_entire_request(struct request *req, int uptodate) end_that_request_last(req, uptodate); } +/* I'm told there are only two stories in the world worth telling: love and + * hate. So there used to be a love scene here like this: + * + * Launcher: We could make beautiful I/O together, you and I. + * Guest: My, that's a big disk! + * + * Unfortunately, it was just too raunchy for our otherwise-gentle tale. */ + +/*D:490 This is the interrupt handler, called when a block read or write has + * been completed for us. */ static irqreturn_t lgb_irq(int irq, void *_bd) { + /* We handed our "struct blockdev" as the argument to request_irq(), so + * it is passed through to us here. This tells us which device we're + * dealing with in case we have more than one. */ struct blockdev *bd = _bd; unsigned long flags; + /* We weren't doing anything? Strange, but could happen if we shared + * interrupts (we don't!). */ if (!bd->req) { pr_debug("No work!\n"); return IRQ_NONE; } + /* Not done yet? That's equally strange. */ if (!bd->lb_page->result) { pr_debug("No result!\n"); return IRQ_NONE; } + /* We have to grab the lock before ending the request. */ spin_lock_irqsave(&bd->lock, flags); + /* "result" is 1 for success, 2 for failure: end_entire_request() wants + * to know whether this succeeded or not. */ end_entire_request(bd->req, bd->lb_page->result == 1); + /* Clear out request, it's done. */ bd->req = NULL; + /* Reset incoming DMA for next time. */ bd->dma.used_len = 0; + /* Ready for more reads or writes */ blk_start_queue(bd->disk->queue); spin_unlock_irqrestore(&bd->lock, flags); + + /* The interrupt was for us, we dealt with it. */ return IRQ_HANDLED; } +/*D:480 The block layer's "struct request" contains a number of "struct bio"s, + * each of which contains "struct bio_vec"s, each of which contains a page, an + * offset and a length. + * + * Fortunately there are iterators to help us walk through the "struct + * request". Even more fortunately, there were plenty of places to steal the + * code from. We pack the "struct request" into our "struct lguest_dma" and + * return the total length. */ static unsigned int req_to_dma(struct request *req, struct lguest_dma *dma) { unsigned int i = 0, idx, len = 0; @@ -87,8 +148,13 @@ static unsigned int req_to_dma(struct request *req, struct lguest_dma *dma) rq_for_each_bio(bio, req) { struct bio_vec *bvec; bio_for_each_segment(bvec, bio, idx) { + /* We told the block layer not to give us too many. */ BUG_ON(i == LGUEST_MAX_DMA_SECTIONS); + /* If we had a zero-length segment, it would look like + * the end of the data referred to by the "struct + * lguest_dma", so make sure that doesn't happen. */ BUG_ON(!bvec->bv_len); + /* Convert page & offset to a physical address */ dma->addr[i] = page_to_phys(bvec->bv_page) + bvec->bv_offset; dma->len[i] = bvec->bv_len; @@ -96,26 +162,39 @@ static unsigned int req_to_dma(struct request *req, struct lguest_dma *dma) i++; } } + /* If the array isn't full, we mark the end with a 0 length */ if (i < LGUEST_MAX_DMA_SECTIONS) dma->len[i] = 0; return len; } +/* This creates an empty DMA, useful for prodding the Host without sending data + * (ie. when we want to do a read) */ static void empty_dma(struct lguest_dma *dma) { dma->len[0] = 0; } +/*D:470 Setting up a request is fairly easy: */ static void setup_req(struct blockdev *bd, int type, struct request *req, struct lguest_dma *dma) { + /* The type is 1 (write) or 0 (read). */ bd->lb_page->type = type; + /* The sector on disk where the read or write starts. */ bd->lb_page->sector = req->sector; + /* The result is initialized to 0 (unfinished). */ bd->lb_page->result = 0; + /* The current request (so we can end it in the interrupt handler). */ bd->req = req; + /* The number of bytes: returned as a side-effect of req_to_dma(), + * which packs the block layer's "struct request" into our "struct + * lguest_dma" */ bd->lb_page->bytes = req_to_dma(req, dma); } +/*D:450 Write is pretty straightforward: we pack the request into a "struct + * lguest_dma", then use SEND_DMA to send the request. */ static void do_write(struct blockdev *bd, struct request *req) { struct lguest_dma send; @@ -126,6 +205,9 @@ static void do_write(struct blockdev *bd, struct request *req) lguest_send_dma(bd->phys_addr, &send); } +/* Read is similar to write, except we pack the request into our receive + * "struct lguest_dma" and send through an empty DMA just to tell the Host that + * there's a request pending. */ static void do_read(struct blockdev *bd, struct request *req) { struct lguest_dma ping; @@ -137,21 +219,30 @@ static void do_read(struct blockdev *bd, struct request *req) lguest_send_dma(bd->phys_addr, &ping); } -static void do_lgb_request(request_queue_t *q) +/*D:440 This where requests come in: we get handed the request queue and are + * expected to pull a "struct request" off it until we've finished them or + * we're waiting for a reply: */ +static void do_lgb_request(struct request_queue *q) { struct blockdev *bd; struct request *req; again: + /* This sometimes returns NULL even on the very first time around. I + * wonder if it's something to do with letting elves handle the request + * queue... */ req = elv_next_request(q); if (!req) return; + /* We attached the struct blockdev to the disk: get it back */ bd = req->rq_disk->private_data; - /* Sometimes we get repeated requests after blk_stop_queue. */ + /* Sometimes we get repeated requests after blk_stop_queue(), but we + * can only handle one at a time. */ if (bd->req) return; + /* We only do reads and writes: no tricky business! */ if (!blk_fs_request(req)) { pr_debug("Got non-command 0x%08x\n", req->cmd_type); req->errors++; @@ -164,20 +255,31 @@ again: else do_read(bd, req); - /* Wait for interrupt to tell us it's done. */ + /* We've put out the request, so stop any more coming in until we get + * an interrupt, which takes us to lgb_irq() to re-enable the queue. */ blk_stop_queue(q); } +/*D:430 This is the "struct block_device_operations" we attach to the disk at + * the end of lguestblk_probe(). It doesn't seem to want much. */ static struct block_device_operations lguestblk_fops = { .owner = THIS_MODULE, }; +/*D:425 Setting up a disk device seems to involve a lot of code. I'm not sure + * quite why. I do know that the IDE code sent two or three of the maintainers + * insane, perhaps this is the fringe of the same disease? + * + * As in the console code, the probe function gets handed the generic + * lguest_device from lguest_bus.c: */ static int lguestblk_probe(struct lguest_device *lgdev) { struct blockdev *bd; int err; int irqflags = IRQF_SHARED; + /* First we allocate our own "struct blockdev" and initialize the easy + * fields. */ bd = kmalloc(sizeof(*bd), GFP_KERNEL); if (!bd) return -ENOMEM; @@ -187,59 +289,100 @@ static int lguestblk_probe(struct lguest_device *lgdev) bd->req = NULL; bd->dma.used_len = 0; bd->dma.len[0] = 0; + /* The descriptor in the lguest_devices array provided by the Host + * gives the Guest the physical page number of the device's page. */ bd->phys_addr = (lguest_devices[lgdev->index].pfn << PAGE_SHIFT); + /* We use lguest_map() to get a pointer to the device page */ bd->lb_page = lguest_map(bd->phys_addr, 1); if (!bd->lb_page) { err = -ENOMEM; goto out_free_bd; } + /* We need a major device number: 0 means "assign one dynamically". */ bd->major = register_blkdev(0, "lguestblk"); if (bd->major < 0) { err = bd->major; goto out_unmap; } + /* This allocates a "struct gendisk" where we pack all the information + * about the disk which the rest of Linux sees. We ask for one minor + * number; I do wonder if we should be asking for more. */ bd->disk = alloc_disk(1); if (!bd->disk) { err = -ENOMEM; goto out_unregister_blkdev; } + /* Every disk needs a queue for requests to come in: we set up the + * queue with a callback function (the core of our driver) and the lock + * to use. */ bd->disk->queue = blk_init_queue(do_lgb_request, &bd->lock); if (!bd->disk->queue) { err = -ENOMEM; goto out_put_disk; } - /* We can only handle a certain number of sg entries */ + /* We can only handle a certain number of pointers in our SEND_DMA + * call, so we set that with blk_queue_max_hw_segments(). This is not + * to be confused with blk_queue_max_phys_segments() of course! I + * know, who could possibly confuse the two? + * + * Well, it's simple to tell them apart: this one seems to work and the + * other one didn't. */ blk_queue_max_hw_segments(bd->disk->queue, LGUEST_MAX_DMA_SECTIONS); - /* Buffers must not cross page boundaries */ + + /* Due to technical limitations of our Host (and simple coding) we + * can't have a single buffer which crosses a page boundary. Tell it + * here. This means that our maximum request size is 16 + * (LGUEST_MAX_DMA_SECTIONS) pages. */ blk_queue_segment_boundary(bd->disk->queue, PAGE_SIZE-1); + /* We name our disk: this becomes the device name when udev does its + * magic thing and creates the device node, such as /dev/lgba. + * next_block_index is a global which starts at 'a'. Unfortunately + * this simple increment logic means that the 27th disk will be called + * "/dev/lgb{". In that case, I recommend having at least 29 disks, so + * your /dev directory will be balanced. */ sprintf(bd->disk->disk_name, "lgb%c", next_block_index++); + + /* We look to the device descriptor again to see if this device's + * interrupts are expected to be random. If they are, we tell the irq + * subsystem. At the moment this bit is always set. */ if (lguest_devices[lgdev->index].features & LGUEST_DEVICE_F_RANDOMNESS) irqflags |= IRQF_SAMPLE_RANDOM; + + /* Now we have the name and irqflags, we can request the interrupt; we + * give it the "struct blockdev" we have set up to pass to lgb_irq() + * when there is an interrupt. */ err = request_irq(bd->irq, lgb_irq, irqflags, bd->disk->disk_name, bd); if (err) goto out_cleanup_queue; + /* We bind our one-entry DMA pool to the key for this block device so + * the Host can reply to our requests. The key is equal to the + * physical address of the device's page, which is conveniently + * unique. */ err = lguest_bind_dma(bd->phys_addr, &bd->dma, 1, bd->irq); if (err) goto out_free_irq; + /* We finish our disk initialization and add the disk to the system. */ bd->disk->major = bd->major; bd->disk->first_minor = 0; bd->disk->private_data = bd; bd->disk->fops = &lguestblk_fops; - /* This is initialized to the disk size by the other end. */ + /* This is initialized to the disk size by the Launcher. */ set_capacity(bd->disk, bd->lb_page->num_sectors); add_disk(bd->disk); printk(KERN_INFO "%s: device %i at major %d\n", bd->disk->disk_name, lgdev->index, bd->major); + /* We don't need to keep the "struct blockdev" around, but if we ever + * implemented device removal, we'd need this. */ lgdev->private = bd; return 0; @@ -258,6 +401,8 @@ out_free_bd: return err; } +/*D:410 The boilerplate code for registering the lguest block driver is just + * like the console: */ static struct lguest_driver lguestblk_drv = { .name = "lguestblk", .owner = THIS_MODULE, diff --git a/drivers/block/loop.c b/drivers/block/loop.c index e425daa1eac3..9f015fce4135 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -529,7 +529,7 @@ static struct bio *loop_get_bio(struct loop_device *lo) return bio; } -static int loop_make_request(request_queue_t *q, struct bio *old_bio) +static int loop_make_request(struct request_queue *q, struct bio *old_bio) { struct loop_device *lo = q->queuedata; int rw = bio_rw(old_bio); @@ -558,7 +558,7 @@ out: /* * kick off io on the underlying address space */ -static void loop_unplug(request_queue_t *q) +static void loop_unplug(struct request_queue *q) { struct loop_device *lo = q->queuedata; diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index c12951024090..be92c658f06e 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -100,7 +100,7 @@ static const char *nbdcmd_to_ascii(int cmd) static void nbd_end_request(struct request *req) { int uptodate = (req->errors == 0) ? 1 : 0; - request_queue_t *q = req->q; + struct request_queue *q = req->q; unsigned long flags; dprintk(DBG_BLKDEV, "%s: request %p: %s\n", req->rq_disk->disk_name, @@ -410,7 +410,7 @@ static void nbd_clear_que(struct nbd_device *lo) * { printk( "Warning: Ignoring result!\n"); nbd_end_request( req ); } */ -static void do_nbd_request(request_queue_t * q) +static void do_nbd_request(struct request_queue * q) { struct request *req; diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c index 1eeb8f2cde71..b8a994a2b013 100644 --- a/drivers/block/paride/pcd.c +++ b/drivers/block/paride/pcd.c @@ -183,7 +183,7 @@ static int pcd_packet(struct cdrom_device_info *cdi, static int pcd_detect(void); static void pcd_probe_capabilities(void); static void do_pcd_read_drq(void); -static void do_pcd_request(request_queue_t * q); +static void do_pcd_request(struct request_queue * q); static void do_pcd_read(void); struct pcd_unit { @@ -713,7 +713,7 @@ static int pcd_detect(void) /* I/O request processing */ static struct request_queue *pcd_queue; -static void do_pcd_request(request_queue_t * q) +static void do_pcd_request(struct request_queue * q) { if (pcd_busy) return; diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c index 31e01488eb51..df819f8a95a6 100644 --- a/drivers/block/paride/pd.c +++ b/drivers/block/paride/pd.c @@ -698,7 +698,7 @@ static enum action pd_identify(struct pd_unit *disk) /* end of io request engine */ -static void do_pd_request(request_queue_t * q) +static void do_pd_request(struct request_queue * q) { if (pd_req) return; diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c index 5826508f6731..ceffa6034e20 100644 --- a/drivers/block/paride/pf.c +++ b/drivers/block/paride/pf.c @@ -202,7 +202,7 @@ module_param_array(drive3, int, NULL, 0); #define ATAPI_WRITE_10 0x2a static int pf_open(struct inode *inode, struct file *file); -static void do_pf_request(request_queue_t * q); +static void do_pf_request(struct request_queue * q); static int pf_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg); static int pf_getgeo(struct block_device *bdev, struct hd_geometry *geo); @@ -760,7 +760,7 @@ static void pf_end_request(int uptodate) } } -static void do_pf_request(request_queue_t * q) +static void do_pf_request(struct request_queue * q) { if (pf_busy) return; diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index 31be33e4f119..fadbfd880bab 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -752,7 +752,7 @@ static inline struct bio *pkt_get_list_first(struct bio **list_head, struct bio */ static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command *cgc) { - request_queue_t *q = bdev_get_queue(pd->bdev); + struct request_queue *q = bdev_get_queue(pd->bdev); struct request *rq; int ret = 0; @@ -979,7 +979,7 @@ static void pkt_iosched_process_queue(struct pktcdvd_device *pd) * Special care is needed if the underlying block device has a small * max_phys_segments value. */ -static int pkt_set_segment_merging(struct pktcdvd_device *pd, request_queue_t *q) +static int pkt_set_segment_merging(struct pktcdvd_device *pd, struct request_queue *q) { if ((pd->settings.size << 9) / CD_FRAMESIZE <= q->max_phys_segments) { /* @@ -2314,7 +2314,7 @@ static int pkt_open_dev(struct pktcdvd_device *pd, int write) { int ret; long lba; - request_queue_t *q; + struct request_queue *q; /* * We need to re-open the cdrom device without O_NONBLOCK to be able @@ -2477,7 +2477,7 @@ static int pkt_end_io_read_cloned(struct bio *bio, unsigned int bytes_done, int return 0; } -static int pkt_make_request(request_queue_t *q, struct bio *bio) +static int pkt_make_request(struct request_queue *q, struct bio *bio) { struct pktcdvd_device *pd; char b[BDEVNAME_SIZE]; @@ -2626,7 +2626,7 @@ end_io: -static int pkt_merge_bvec(request_queue_t *q, struct bio *bio, struct bio_vec *bvec) +static int pkt_merge_bvec(struct request_queue *q, struct bio *bio, struct bio_vec *bvec) { struct pktcdvd_device *pd = q->queuedata; sector_t zone = ZONE(bio->bi_sector, pd); @@ -2647,7 +2647,7 @@ static int pkt_merge_bvec(request_queue_t *q, struct bio *bio, struct bio_vec *b static void pkt_init_queue(struct pktcdvd_device *pd) { - request_queue_t *q = pd->disk->queue; + struct request_queue *q = pd->disk->queue; blk_queue_make_request(q, pkt_make_request); blk_queue_hardsect_size(q, CD_FRAMESIZE); diff --git a/drivers/block/ps2esdi.c b/drivers/block/ps2esdi.c index 688a4fb0dc99..3c796e236253 100644 --- a/drivers/block/ps2esdi.c +++ b/drivers/block/ps2esdi.c @@ -64,7 +64,7 @@ static void reset_ctrl(void); static int ps2esdi_geninit(void); -static void do_ps2esdi_request(request_queue_t * q); +static void do_ps2esdi_request(struct request_queue * q); static void ps2esdi_readwrite(int cmd, struct request *req); @@ -473,7 +473,7 @@ static void __init ps2esdi_get_device_cfg(void) } /* strategy routine that handles most of the IO requests */ -static void do_ps2esdi_request(request_queue_t * q) +static void do_ps2esdi_request(struct request_queue * q) { struct request *req; /* since, this routine is called with interrupts cleared - they diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c index 170fb33dba97..aa8b890c80d7 100644 --- a/drivers/block/ps3disk.c +++ b/drivers/block/ps3disk.c @@ -190,7 +190,7 @@ static int ps3disk_submit_flush_request(struct ps3_storage_device *dev, } static void ps3disk_do_request(struct ps3_storage_device *dev, - request_queue_t *q) + struct request_queue *q) { struct request *req; @@ -211,7 +211,7 @@ static void ps3disk_do_request(struct ps3_storage_device *dev, } } -static void ps3disk_request(request_queue_t *q) +static void ps3disk_request(struct request_queue *q) { struct ps3_storage_device *dev = q->queuedata; struct ps3disk_private *priv = dev->sbd.core.driver_data; @@ -404,7 +404,7 @@ static int ps3disk_identify(struct ps3_storage_device *dev) return 0; } -static void ps3disk_prepare_flush(request_queue_t *q, struct request *req) +static void ps3disk_prepare_flush(struct request_queue *q, struct request *req) { struct ps3_storage_device *dev = q->queuedata; @@ -414,7 +414,7 @@ static void ps3disk_prepare_flush(request_queue_t *q, struct request *req) req->cmd_type = REQ_TYPE_FLUSH; } -static int ps3disk_issue_flush(request_queue_t *q, struct gendisk *gendisk, +static int ps3disk_issue_flush(struct request_queue *q, struct gendisk *gendisk, sector_t *sector) { struct ps3_storage_device *dev = q->queuedata; diff --git a/drivers/block/rd.c b/drivers/block/rd.c index a1512da32410..65150b548f3a 100644 --- a/drivers/block/rd.c +++ b/drivers/block/rd.c @@ -264,7 +264,7 @@ static int rd_blkdev_pagecache_IO(int rw, struct bio_vec *vec, sector_t sector, * 19-JAN-1998 Richard Gooch <rgooch@atnf.csiro.au> Added devfs support * */ -static int rd_make_request(request_queue_t *q, struct bio *bio) +static int rd_make_request(struct request_queue *q, struct bio *bio) { struct block_device *bdev = bio->bi_bdev; struct address_space * mapping = bdev->bd_inode->i_mapping; diff --git a/drivers/block/sunvdc.c b/drivers/block/sunvdc.c index d50b82381155..4dff49256ac2 100644 --- a/drivers/block/sunvdc.c +++ b/drivers/block/sunvdc.c @@ -444,7 +444,7 @@ out: return err; } -static void do_vdc_request(request_queue_t *q) +static void do_vdc_request(struct request_queue *q) { while (1) { struct request *req = elv_next_request(q); diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c index 1a65979f1f0f..b4e462f154ea 100644 --- a/drivers/block/swim3.c +++ b/drivers/block/swim3.c @@ -225,7 +225,7 @@ static unsigned short write_postamble[] = { static void swim3_select(struct floppy_state *fs, int sel); static void swim3_action(struct floppy_state *fs, int action); static int swim3_readbit(struct floppy_state *fs, int bit); -static void do_fd_request(request_queue_t * q); +static void do_fd_request(struct request_queue * q); static void start_request(struct floppy_state *fs); static void set_timeout(struct floppy_state *fs, int nticks, void (*proc)(unsigned long)); @@ -290,7 +290,7 @@ static int swim3_readbit(struct floppy_state *fs, int bit) return (stat & DATA) == 0; } -static void do_fd_request(request_queue_t * q) +static void do_fd_request(struct request_queue * q) { int i; for(i=0;i<floppy_count;i++) diff --git a/drivers/block/sx8.c b/drivers/block/sx8.c index 949ae93499e5..402209fec59a 100644 --- a/drivers/block/sx8.c +++ b/drivers/block/sx8.c @@ -278,7 +278,7 @@ struct carm_host { unsigned int state; u32 fw_ver; - request_queue_t *oob_q; + struct request_queue *oob_q; unsigned int n_oob; unsigned int hw_sg_used; @@ -287,7 +287,7 @@ struct carm_host { unsigned int wait_q_prod; unsigned int wait_q_cons; - request_queue_t *wait_q[CARM_MAX_WAIT_Q]; + struct request_queue *wait_q[CARM_MAX_WAIT_Q]; unsigned int n_msgs; u64 msg_alloc; @@ -756,7 +756,7 @@ static inline void carm_end_request_queued(struct carm_host *host, assert(rc == 0); } -static inline void carm_push_q (struct carm_host *host, request_queue_t *q) +static inline void carm_push_q (struct carm_host *host, struct request_queue *q) { unsigned int idx = host->wait_q_prod % CARM_MAX_WAIT_Q; @@ -768,7 +768,7 @@ static inline void carm_push_q (struct carm_host *host, request_queue_t *q) BUG_ON(host->wait_q_prod == host->wait_q_cons); /* overrun */ } -static inline request_queue_t *carm_pop_q(struct carm_host *host) +static inline struct request_queue *carm_pop_q(struct carm_host *host) { unsigned int idx; @@ -783,7 +783,7 @@ static inline request_queue_t *carm_pop_q(struct carm_host *host) static inline void carm_round_robin(struct carm_host *host) { - request_queue_t *q = carm_pop_q(host); + struct request_queue *q = carm_pop_q(host); if (q) { blk_start_queue(q); VPRINTK("STARTED QUEUE %p\n", q); @@ -802,7 +802,7 @@ static inline void carm_end_rq(struct carm_host *host, struct carm_request *crq, } } -static void carm_oob_rq_fn(request_queue_t *q) +static void carm_oob_rq_fn(struct request_queue *q) { struct carm_host *host = q->queuedata; struct carm_request *crq; @@ -833,7 +833,7 @@ static void carm_oob_rq_fn(request_queue_t *q) } } -static void carm_rq_fn(request_queue_t *q) +static void carm_rq_fn(struct request_queue *q) { struct carm_port *port = q->queuedata; struct carm_host *host = port->host; @@ -1494,7 +1494,7 @@ static int carm_init_disks(struct carm_host *host) for (i = 0; i < CARM_MAX_PORTS; i++) { struct gendisk *disk; - request_queue_t *q; + struct request_queue *q; struct carm_port *port; port = &host->port[i]; @@ -1538,7 +1538,7 @@ static void carm_free_disks(struct carm_host *host) for (i = 0; i < CARM_MAX_PORTS; i++) { struct gendisk *disk = host->port[i].disk; if (disk) { - request_queue_t *q = disk->queue; + struct request_queue *q = disk->queue; if (disk->flags & GENHD_FL_UP) del_gendisk(disk); @@ -1571,7 +1571,7 @@ static int carm_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) struct carm_host *host; unsigned int pci_dac; int rc; - request_queue_t *q; + struct request_queue *q; unsigned int i; if (!printed_version++) diff --git a/drivers/block/ub.c b/drivers/block/ub.c index 8b13d7d2cb63..c57dd2b3a0c8 100644 --- a/drivers/block/ub.c +++ b/drivers/block/ub.c @@ -503,7 +503,7 @@ static void ub_cleanup(struct ub_dev *sc) { struct list_head *p; struct ub_lun *lun; - request_queue_t *q; + struct request_queue *q; while (!list_empty(&sc->luns)) { p = sc->luns.next; @@ -619,7 +619,7 @@ static struct ub_scsi_cmd *ub_cmdq_pop(struct ub_dev *sc) * The request function is our main entry point */ -static void ub_request_fn(request_queue_t *q) +static void ub_request_fn(struct request_queue *q) { struct ub_lun *lun = q->queuedata; struct request *rq; @@ -2273,7 +2273,7 @@ err_core: static int ub_probe_lun(struct ub_dev *sc, int lnum) { struct ub_lun *lun; - request_queue_t *q; + struct request_queue *q; struct gendisk *disk; int rc; diff --git a/drivers/block/umem.c b/drivers/block/umem.c index dec74bd23496..6b7c02d6360d 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -114,7 +114,7 @@ struct cardinfo { */ struct bio *bio, *currentbio, **biotail; - request_queue_t *queue; + struct request_queue *queue; struct mm_page { dma_addr_t page_dma; @@ -357,7 +357,7 @@ static inline void reset_page(struct mm_page *page) page->biotail = & page->bio; } -static void mm_unplug_device(request_queue_t *q) +static void mm_unplug_device(struct request_queue *q) { struct cardinfo *card = q->queuedata; unsigned long flags; @@ -541,7 +541,7 @@ static void process_page(unsigned long data) -- mm_make_request ----------------------------------------------------------------------------------- */ -static int mm_make_request(request_queue_t *q, struct bio *bio) +static int mm_make_request(struct request_queue *q, struct bio *bio) { struct cardinfo *card = q->queuedata; pr_debug("mm_make_request %llu %u\n", diff --git a/drivers/block/viodasd.c b/drivers/block/viodasd.c index dae39911a11d..85916e2665d4 100644 --- a/drivers/block/viodasd.c +++ b/drivers/block/viodasd.c @@ -400,7 +400,7 @@ error_ret: /* * This is the external request processing routine */ -static void do_viodasd_request(request_queue_t *q) +static void do_viodasd_request(struct request_queue *q) { struct request *req; diff --git a/drivers/block/xd.c b/drivers/block/xd.c index 0d97b7eb818a..624d30f7da3f 100644 --- a/drivers/block/xd.c +++ b/drivers/block/xd.c @@ -298,7 +298,7 @@ static u_char __init xd_detect (u_char *controller, unsigned int *address) } /* do_xd_request: handle an incoming request */ -static void do_xd_request (request_queue_t * q) +static void do_xd_request (struct request_queue * q) { struct request *req; diff --git a/drivers/block/xd.h b/drivers/block/xd.h index 82e090fea957..cffd44a20383 100644 --- a/drivers/block/xd.h +++ b/drivers/block/xd.h @@ -104,7 +104,7 @@ static int xd_manual_geo_init (char *command); static u_char xd_detect (u_char *controller, unsigned int *address); static u_char xd_initdrives (void (*init_drive)(u_char drive)); -static void do_xd_request (request_queue_t * q); +static void do_xd_request (struct request_queue * q); static int xd_ioctl (struct inode *inode,struct file *file,unsigned int cmd,unsigned long arg); static int xd_readwrite (u_char operation,XD_INFO *disk,char *buffer,u_int block,u_int count); static void xd_recalibrate (u_char drive); diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 6746c29181f8..964e51634f2d 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -241,7 +241,7 @@ static inline void flush_requests(struct blkfront_info *info) * do_blkif_request * read a block; request is in a request queue */ -static void do_blkif_request(request_queue_t *rq) +static void do_blkif_request(struct request_queue *rq) { struct blkfront_info *info = NULL; struct request *req; @@ -287,7 +287,7 @@ wait: static int xlvbd_init_blk_queue(struct gendisk *gd, u16 sector_size) { - request_queue_t *rq; + struct request_queue *rq; rq = blk_init_queue(do_blkif_request, &blkif_io_lock); if (rq == NULL) diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index 732ec63b6e9c..cb27e8863d7c 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -458,7 +458,7 @@ static inline void ace_fsm_yieldirq(struct ace_device *ace) } /* Get the next read/write request; ending requests that we don't handle */ -struct request *ace_get_next_request(request_queue_t * q) +struct request *ace_get_next_request(struct request_queue * q) { struct request *req; @@ -825,7 +825,7 @@ static irqreturn_t ace_interrupt(int irq, void *dev_id) /* --------------------------------------------------------------------- * Block ops */ -static void ace_request(request_queue_t * q) +static void ace_request(struct request_queue * q) { struct request *req; struct ace_device *ace; diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c index e40fa98842e5..2d5853cbd4b0 100644 --- a/drivers/block/z2ram.c +++ b/drivers/block/z2ram.c @@ -67,7 +67,7 @@ static DEFINE_SPINLOCK(z2ram_lock); static struct block_device_operations z2_fops; static struct gendisk *z2ram_gendisk; -static void do_z2_request(request_queue_t *q) +static void do_z2_request(struct request_queue *q) { struct request *req; while ((req = elv_next_request(q)) != NULL) { |