diff options
Diffstat (limited to 'drivers/block')
-rw-r--r-- | drivers/block/Kconfig | 12 | ||||
-rw-r--r-- | drivers/block/amiflop.c | 57 | ||||
-rw-r--r-- | drivers/block/aoe/aoecmd.c | 6 | ||||
-rw-r--r-- | drivers/block/aoe/aoedev.c | 9 | ||||
-rw-r--r-- | drivers/block/brd.c | 65 | ||||
-rw-r--r-- | drivers/block/floppy.c | 10 | ||||
-rw-r--r-- | drivers/block/rbd.c | 65 | ||||
-rw-r--r-- | drivers/block/swim3.c | 31 |
8 files changed, 67 insertions, 188 deletions
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index 923b417eaf4c..40579d0cb3d1 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig @@ -302,7 +302,6 @@ config BLK_DEV_SX8 config BLK_DEV_RAM tristate "RAM block device support" - select DAX if BLK_DEV_RAM_DAX ---help--- Saying Y here will allow you to use a portion of your RAM memory as a block device, so that you can make file systems on it, read and @@ -338,17 +337,6 @@ config BLK_DEV_RAM_SIZE The default value is 4096 kilobytes. Only change this if you know what you are doing. -config BLK_DEV_RAM_DAX - bool "Support Direct Access (DAX) to RAM block devices" - depends on BLK_DEV_RAM && FS_DAX - default n - help - Support filesystems using DAX to access RAM block devices. This - avoids double-buffering data in the page cache before copying it - to the block device. Answering Y will slightly enlarge the kernel, - and will prevent RAM block device backing store memory from being - allocated from highmem (only a problem for highmem systems). - config CDROM_PKTCDVD tristate "Packet writing on CD/DVD media (DEPRECATED)" depends on !UML diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c index 4e3fb9f104af..e5aa62fcf5a8 100644 --- a/drivers/block/amiflop.c +++ b/drivers/block/amiflop.c @@ -146,6 +146,7 @@ static struct amiga_floppy_struct unit[FD_MAX_UNITS]; static struct timer_list flush_track_timer[FD_MAX_UNITS]; static struct timer_list post_write_timer; +static unsigned long post_write_timer_drive; static struct timer_list motor_on_timer; static struct timer_list motor_off_timer[FD_MAX_UNITS]; static int on_attempts; @@ -323,7 +324,7 @@ static void fd_deselect (int drive) } -static void motor_on_callback(unsigned long ignored) +static void motor_on_callback(struct timer_list *unused) { if (!(ciaa.pra & DSKRDY) || --on_attempts == 0) { complete_all(&motor_on_completion); @@ -355,7 +356,7 @@ static int fd_motor_on(int nr) on_attempts = -1; #if 0 printk (KERN_ERR "motor_on failed, turning motor off\n"); - fd_motor_off (nr); + fd_motor_off (motor_off_timer + nr); return 0; #else printk (KERN_WARNING "DSKRDY not set after 1.5 seconds - assuming drive is spinning notwithstanding\n"); @@ -365,20 +366,17 @@ static int fd_motor_on(int nr) return 1; } -static void fd_motor_off(unsigned long drive) +static void fd_motor_off(struct timer_list *timer) { - long calledfromint; -#ifdef MODULE - long decusecount; + unsigned long drive = ((unsigned long)timer - + (unsigned long)&motor_off_timer[0]) / + sizeof(motor_off_timer[0]); - decusecount = drive & 0x40000000; -#endif - calledfromint = drive & 0x80000000; drive&=3; - if (calledfromint && !try_fdc(drive)) { + if (!try_fdc(drive)) { /* We would be blocked in an interrupt, so try again later */ - motor_off_timer[drive].expires = jiffies + 1; - add_timer(motor_off_timer + drive); + timer->expires = jiffies + 1; + add_timer(timer); return; } unit[drive].motor = 0; @@ -392,8 +390,6 @@ static void floppy_off (unsigned int nr) int drive; drive = nr & 3; - /* called this way it is always from interrupt */ - motor_off_timer[drive].data = nr | 0x80000000; mod_timer(motor_off_timer + drive, jiffies + 3*HZ); } @@ -435,7 +431,7 @@ static int fd_calibrate(int drive) break; if (--n == 0) { printk (KERN_ERR "fd%d: calibrate failed, turning motor off\n", drive); - fd_motor_off (drive); + fd_motor_off (motor_off_timer + drive); unit[drive].track = -1; rel_fdc(); return 0; @@ -564,7 +560,7 @@ static irqreturn_t fd_block_done(int irq, void *dummy) if (block_flag == 2) { /* writing */ writepending = 2; post_write_timer.expires = jiffies + 1; /* at least 2 ms */ - post_write_timer.data = selected; + post_write_timer_drive = selected; add_timer(&post_write_timer); } else { /* reading */ @@ -651,6 +647,10 @@ static void post_write (unsigned long drive) rel_fdc(); /* corresponds to get_fdc() in raw_write */ } +static void post_write_callback(struct timer_list *timer) +{ + post_write(post_write_timer_drive); +} /* * The following functions are to convert the block contents into raw data @@ -1244,8 +1244,12 @@ static void dos_write(int disk) /* FIXME: this assumes the drive is still spinning - * which is only true if we complete writing a track within three seconds */ -static void flush_track_callback(unsigned long nr) +static void flush_track_callback(struct timer_list *timer) { + unsigned long nr = ((unsigned long)timer - + (unsigned long)&flush_track_timer[0]) / + sizeof(flush_track_timer[0]); + nr&=3; writefromint = 1; if (!try_fdc(nr)) { @@ -1649,8 +1653,7 @@ static void floppy_release(struct gendisk *disk, fmode_t mode) fd_ref[drive] = 0; } #ifdef MODULE -/* the mod_use counter is handled this way */ - floppy_off (drive | 0x40000000); + floppy_off (drive); #endif mutex_unlock(&amiflop_mutex); } @@ -1791,27 +1794,19 @@ static int __init amiga_floppy_probe(struct platform_device *pdev) floppy_find, NULL, NULL); /* initialize variables */ - init_timer(&motor_on_timer); + timer_setup(&motor_on_timer, motor_on_callback, 0); motor_on_timer.expires = 0; - motor_on_timer.data = 0; - motor_on_timer.function = motor_on_callback; for (i = 0; i < FD_MAX_UNITS; i++) { - init_timer(&motor_off_timer[i]); + timer_setup(&motor_off_timer[i], fd_motor_off, 0); motor_off_timer[i].expires = 0; - motor_off_timer[i].data = i|0x80000000; - motor_off_timer[i].function = fd_motor_off; - init_timer(&flush_track_timer[i]); + timer_setup(&flush_track_timer[i], flush_track_callback, 0); flush_track_timer[i].expires = 0; - flush_track_timer[i].data = i; - flush_track_timer[i].function = flush_track_callback; unit[i].track = -1; } - init_timer(&post_write_timer); + timer_setup(&post_write_timer, post_write_callback, 0); post_write_timer.expires = 0; - post_write_timer.data = 0; - post_write_timer.function = post_write; for (i = 0; i < 128; i++) mfmdecode[i]=255; diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c index dc43254e05a4..55ab25f79a08 100644 --- a/drivers/block/aoe/aoecmd.c +++ b/drivers/block/aoe/aoecmd.c @@ -744,7 +744,7 @@ count_targets(struct aoedev *d, int *untainted) } static void -rexmit_timer(ulong vp) +rexmit_timer(struct timer_list *timer) { struct aoedev *d; struct aoetgt *t; @@ -758,7 +758,7 @@ rexmit_timer(ulong vp) int utgts; /* number of aoetgt descriptors (not slots) */ int since; - d = (struct aoedev *) vp; + d = from_timer(d, timer, timer); spin_lock_irqsave(&d->lock, flags); @@ -1429,7 +1429,7 @@ aoecmd_ata_id(struct aoedev *d) d->rttavg = RTTAVG_INIT; d->rttdev = RTTDEV_INIT; - d->timer.function = rexmit_timer; + d->timer.function = (TIMER_FUNC_TYPE)rexmit_timer; skb = skb_clone(skb, GFP_ATOMIC); if (skb) { diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c index b28fefb90391..697f735b07a4 100644 --- a/drivers/block/aoe/aoedev.c +++ b/drivers/block/aoe/aoedev.c @@ -15,7 +15,6 @@ #include <linux/string.h> #include "aoe.h" -static void dummy_timer(ulong); static void freetgt(struct aoedev *d, struct aoetgt *t); static void skbpoolfree(struct aoedev *d); @@ -146,11 +145,11 @@ aoedev_put(struct aoedev *d) } static void -dummy_timer(ulong vp) +dummy_timer(struct timer_list *t) { struct aoedev *d; - d = (struct aoedev *)vp; + d = from_timer(d, t, timer); if (d->flags & DEVFL_TKILL) return; d->timer.expires = jiffies + HZ; @@ -466,9 +465,7 @@ aoedev_by_aoeaddr(ulong maj, int min, int do_alloc) INIT_WORK(&d->work, aoecmd_sleepwork); spin_lock_init(&d->lock); skb_queue_head_init(&d->skbpool); - init_timer(&d->timer); - d->timer.data = (ulong) d; - d->timer.function = dummy_timer; + timer_setup(&d->timer, dummy_timer, 0); d->timer.expires = jiffies + HZ; add_timer(&d->timer); d->bufpool = NULL; /* defer to aoeblk_gdalloc */ diff --git a/drivers/block/brd.c b/drivers/block/brd.c index 588360d79fca..8028a3a7e7fd 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -21,11 +21,6 @@ #include <linux/fs.h> #include <linux/slab.h> #include <linux/backing-dev.h> -#ifdef CONFIG_BLK_DEV_RAM_DAX -#include <linux/pfn_t.h> -#include <linux/dax.h> -#include <linux/uio.h> -#endif #include <linux/uaccess.h> @@ -45,9 +40,6 @@ struct brd_device { struct request_queue *brd_queue; struct gendisk *brd_disk; -#ifdef CONFIG_BLK_DEV_RAM_DAX - struct dax_device *dax_dev; -#endif struct list_head brd_list; /* @@ -112,9 +104,6 @@ static struct page *brd_insert_page(struct brd_device *brd, sector_t sector) * restriction might be able to be lifted. */ gfp_flags = GFP_NOIO | __GFP_ZERO; -#ifndef CONFIG_BLK_DEV_RAM_DAX - gfp_flags |= __GFP_HIGHMEM; -#endif page = alloc_page(gfp_flags); if (!page) return NULL; @@ -334,43 +323,6 @@ static int brd_rw_page(struct block_device *bdev, sector_t sector, return err; } -#ifdef CONFIG_BLK_DEV_RAM_DAX -static long __brd_direct_access(struct brd_device *brd, pgoff_t pgoff, - long nr_pages, void **kaddr, pfn_t *pfn) -{ - struct page *page; - - if (!brd) - return -ENODEV; - page = brd_insert_page(brd, (sector_t)pgoff << PAGE_SECTORS_SHIFT); - if (!page) - return -ENOSPC; - *kaddr = page_address(page); - *pfn = page_to_pfn_t(page); - - return 1; -} - -static long brd_dax_direct_access(struct dax_device *dax_dev, - pgoff_t pgoff, long nr_pages, void **kaddr, pfn_t *pfn) -{ - struct brd_device *brd = dax_get_private(dax_dev); - - return __brd_direct_access(brd, pgoff, nr_pages, kaddr, pfn); -} - -static size_t brd_dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, - void *addr, size_t bytes, struct iov_iter *i) -{ - return copy_from_iter(addr, bytes, i); -} - -static const struct dax_operations brd_dax_ops = { - .direct_access = brd_dax_direct_access, - .copy_from_iter = brd_dax_copy_from_iter, -}; -#endif - static const struct block_device_operations brd_fops = { .owner = THIS_MODULE, .rw_page = brd_rw_page, @@ -451,21 +403,8 @@ static struct brd_device *brd_alloc(int i) set_capacity(disk, rd_size * 2); disk->queue->backing_dev_info->capabilities |= BDI_CAP_SYNCHRONOUS_IO; -#ifdef CONFIG_BLK_DEV_RAM_DAX - queue_flag_set_unlocked(QUEUE_FLAG_DAX, brd->brd_queue); - brd->dax_dev = alloc_dax(brd, disk->disk_name, &brd_dax_ops); - if (!brd->dax_dev) - goto out_free_inode; -#endif - - return brd; -#ifdef CONFIG_BLK_DEV_RAM_DAX -out_free_inode: - kill_dax(brd->dax_dev); - put_dax(brd->dax_dev); -#endif out_free_queue: blk_cleanup_queue(brd->brd_queue); out_free_dev: @@ -505,10 +444,6 @@ out: static void brd_del_one(struct brd_device *brd) { list_del(&brd->brd_list); -#ifdef CONFIG_BLK_DEV_RAM_DAX - kill_dax(brd->dax_dev); - put_dax(brd->dax_dev); -#endif del_gendisk(brd->brd_disk); brd_free(brd); } diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index a54183935aa1..eae484acfbbc 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -903,10 +903,14 @@ static void unlock_fdc(void) } /* switches the motor off after a given timeout */ -static void motor_off_callback(unsigned long nr) +static void motor_off_callback(struct timer_list *t) { + unsigned long nr = t - motor_off_timer; unsigned char mask = ~(0x10 << UNIT(nr)); + if (WARN_ON_ONCE(nr >= N_DRIVE)) + return; + set_dor(FDC(nr), mask, 0); } @@ -3047,7 +3051,7 @@ static void raw_cmd_done(int flag) else raw_cmd->flags &= ~FD_RAW_DISK_CHANGE; if (raw_cmd->flags & FD_RAW_NO_MOTOR_AFTER) - motor_off_callback(current_drive); + motor_off_callback(&motor_off_timer[current_drive]); if (raw_cmd->next && (!(raw_cmd->flags & FD_RAW_FAILURE) || @@ -4542,7 +4546,7 @@ static int __init do_floppy_init(void) disks[drive]->fops = &floppy_fops; sprintf(disks[drive]->disk_name, "fd%d", drive); - setup_timer(&motor_off_timer[drive], motor_off_callback, drive); + timer_setup(&motor_off_timer[drive], motor_off_callback, 0); } err = register_blkdev(FLOPPY_MAJOR, "fd"); diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index adc877dfef5c..38fc5f397fde 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -348,7 +348,6 @@ struct rbd_client_id { struct rbd_mapping { u64 size; u64 features; - bool read_only; }; /* @@ -450,12 +449,11 @@ static DEFINE_IDA(rbd_dev_id_ida); static struct workqueue_struct *rbd_wq; /* - * Default to false for now, as single-major requires >= 0.75 version of - * userspace rbd utility. + * single-major requires >= 0.75 version of userspace rbd utility. */ -static bool single_major = false; +static bool single_major = true; module_param(single_major, bool, S_IRUGO); -MODULE_PARM_DESC(single_major, "Use a single major number for all rbd devices (default: false)"); +MODULE_PARM_DESC(single_major, "Use a single major number for all rbd devices (default: true)"); static int rbd_img_request_submit(struct rbd_img_request *img_request); @@ -608,9 +606,6 @@ static int rbd_open(struct block_device *bdev, fmode_t mode) struct rbd_device *rbd_dev = bdev->bd_disk->private_data; bool removing = false; - if ((mode & FMODE_WRITE) && rbd_dev->mapping.read_only) - return -EROFS; - spin_lock_irq(&rbd_dev->lock); if (test_bit(RBD_DEV_FLAG_REMOVING, &rbd_dev->flags)) removing = true; @@ -640,46 +635,24 @@ static void rbd_release(struct gendisk *disk, fmode_t mode) static int rbd_ioctl_set_ro(struct rbd_device *rbd_dev, unsigned long arg) { - int ret = 0; - int val; - bool ro; - bool ro_changed = false; + int ro; - /* get_user() may sleep, so call it before taking rbd_dev->lock */ - if (get_user(val, (int __user *)(arg))) + if (get_user(ro, (int __user *)arg)) return -EFAULT; - ro = val ? true : false; - /* Snapshot doesn't allow to write*/ + /* Snapshots can't be marked read-write */ if (rbd_dev->spec->snap_id != CEPH_NOSNAP && !ro) return -EROFS; - spin_lock_irq(&rbd_dev->lock); - /* prevent others open this device */ - if (rbd_dev->open_count > 1) { - ret = -EBUSY; - goto out; - } - - if (rbd_dev->mapping.read_only != ro) { - rbd_dev->mapping.read_only = ro; - ro_changed = true; - } - -out: - spin_unlock_irq(&rbd_dev->lock); - /* set_disk_ro() may sleep, so call it after releasing rbd_dev->lock */ - if (ret == 0 && ro_changed) - set_disk_ro(rbd_dev->disk, ro ? 1 : 0); - - return ret; + /* Let blkdev_roset() handle it */ + return -ENOTTY; } static int rbd_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg) { struct rbd_device *rbd_dev = bdev->bd_disk->private_data; - int ret = 0; + int ret; switch (cmd) { case BLKROSET: @@ -4050,15 +4023,8 @@ static void rbd_queue_workfn(struct work_struct *work) goto err_rq; } - /* Only reads are allowed to a read-only device */ - - if (op_type != OBJ_OP_READ) { - if (rbd_dev->mapping.read_only) { - result = -EROFS; - goto err_rq; - } - rbd_assert(rbd_dev->spec->snap_id == CEPH_NOSNAP); - } + rbd_assert(op_type == OBJ_OP_READ || + rbd_dev->spec->snap_id == CEPH_NOSNAP); /* * Quit early if the mapped snapshot no longer exists. It's @@ -4423,7 +4389,6 @@ static int rbd_init_disk(struct rbd_device *rbd_dev) /* enable the discard support */ queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q); q->limits.discard_granularity = segment_size; - q->limits.discard_alignment = segment_size; blk_queue_max_discard_sectors(q, segment_size / SECTOR_SIZE); blk_queue_max_write_zeroes_sectors(q, segment_size / SECTOR_SIZE); @@ -5994,7 +5959,7 @@ static int rbd_dev_device_setup(struct rbd_device *rbd_dev) goto err_out_disk; set_capacity(rbd_dev->disk, rbd_dev->mapping.size / SECTOR_SIZE); - set_disk_ro(rbd_dev->disk, rbd_dev->mapping.read_only); + set_disk_ro(rbd_dev->disk, rbd_dev->opts->read_only); ret = dev_set_name(&rbd_dev->dev, "%d", rbd_dev->dev_id); if (ret) @@ -6145,7 +6110,6 @@ static ssize_t do_rbd_add(struct bus_type *bus, struct rbd_options *rbd_opts = NULL; struct rbd_spec *spec = NULL; struct rbd_client *rbdc; - bool read_only; int rc; if (!try_module_get(THIS_MODULE)) @@ -6194,11 +6158,8 @@ static ssize_t do_rbd_add(struct bus_type *bus, } /* If we are mapping a snapshot it must be marked read-only */ - - read_only = rbd_dev->opts->read_only; if (rbd_dev->spec->snap_id != CEPH_NOSNAP) - read_only = true; - rbd_dev->mapping.read_only = read_only; + rbd_dev->opts->read_only = true; rc = rbd_dev_device_setup(rbd_dev); if (rc) diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c index 9f931f8f6b4c..e620e423102b 100644 --- a/drivers/block/swim3.c +++ b/drivers/block/swim3.c @@ -239,10 +239,10 @@ static unsigned short write_postamble[] = { static void seek_track(struct floppy_state *fs, int n); static void init_dma(struct dbdma_cmd *cp, int cmd, void *buf, int count); static void act(struct floppy_state *fs); -static void scan_timeout(unsigned long data); -static void seek_timeout(unsigned long data); -static void settle_timeout(unsigned long data); -static void xfer_timeout(unsigned long data); +static void scan_timeout(struct timer_list *t); +static void seek_timeout(struct timer_list *t); +static void settle_timeout(struct timer_list *t); +static void xfer_timeout(struct timer_list *t); static irqreturn_t swim3_interrupt(int irq, void *dev_id); /*static void fd_dma_interrupt(int irq, void *dev_id);*/ static int grab_drive(struct floppy_state *fs, enum swim_state state, @@ -392,13 +392,12 @@ static void do_fd_request(struct request_queue * q) } static void set_timeout(struct floppy_state *fs, int nticks, - void (*proc)(unsigned long)) + void (*proc)(struct timer_list *t)) { if (fs->timeout_pending) del_timer(&fs->timeout); fs->timeout.expires = jiffies + nticks; - fs->timeout.function = proc; - fs->timeout.data = (unsigned long) fs; + fs->timeout.function = (TIMER_FUNC_TYPE)proc; add_timer(&fs->timeout); fs->timeout_pending = 1; } @@ -569,9 +568,9 @@ static void act(struct floppy_state *fs) } } -static void scan_timeout(unsigned long data) +static void scan_timeout(struct timer_list *t) { - struct floppy_state *fs = (struct floppy_state *) data; + struct floppy_state *fs = from_timer(fs, t, timeout); struct swim3 __iomem *sw = fs->swim3; unsigned long flags; @@ -594,9 +593,9 @@ static void scan_timeout(unsigned long data) spin_unlock_irqrestore(&swim3_lock, flags); } -static void seek_timeout(unsigned long data) +static void seek_timeout(struct timer_list *t) { - struct floppy_state *fs = (struct floppy_state *) data; + struct floppy_state *fs = from_timer(fs, t, timeout); struct swim3 __iomem *sw = fs->swim3; unsigned long flags; @@ -614,9 +613,9 @@ static void seek_timeout(unsigned long data) spin_unlock_irqrestore(&swim3_lock, flags); } -static void settle_timeout(unsigned long data) +static void settle_timeout(struct timer_list *t) { - struct floppy_state *fs = (struct floppy_state *) data; + struct floppy_state *fs = from_timer(fs, t, timeout); struct swim3 __iomem *sw = fs->swim3; unsigned long flags; @@ -644,9 +643,9 @@ static void settle_timeout(unsigned long data) spin_unlock_irqrestore(&swim3_lock, flags); } -static void xfer_timeout(unsigned long data) +static void xfer_timeout(struct timer_list *t) { - struct floppy_state *fs = (struct floppy_state *) data; + struct floppy_state *fs = from_timer(fs, t, timeout); struct swim3 __iomem *sw = fs->swim3; struct dbdma_regs __iomem *dr = fs->dma; unsigned long flags; @@ -1182,7 +1181,7 @@ static int swim3_add_device(struct macio_dev *mdev, int index) return -EBUSY; } - init_timer(&fs->timeout); + timer_setup(&fs->timeout, NULL, 0); swim3_info("SWIM3 floppy controller %s\n", mdev->media_bay ? "in media bay" : ""); |