Commit 8a9f772c authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block: (27 commits)
  block: remove unused copy_io_context()
  Documentation: remove anticipatory scheduler info
  block: remove REQ_HARDBARRIER
  ioprio: rcu_read_lock/unlock protect find_task_by_vpid call (V2)
  ioprio: fix RCU locking around task dereference
  block: ioctl: fix information leak to userland
  block: read i_size with i_size_read()
  cciss: fix proc warning on attempt to remove non-existant directory
  bio: take care not overflow page count when mapping/copying user data
  block: limit vec count in bio_kmalloc() and bio_alloc_map_data()
  block: take care not to overflow when calculating total iov length
  block: check for proper length of iov entries in blk_rq_map_user_iov()
  cciss: remove controllers supported by hpsa
  cciss: use usleep_range not msleep for small sleeps
  cciss: limit commands allocated on reset_devices
  cciss: Use kernel provided PCI state save and restore functions
  cciss: fix board status waiting code
  drbd: Removed checks for REQ_HARDBARRIER on incomming BIOs
  drbd: REQ_HARDBARRIER -> REQ_FUA transition for meta data accesses
  drbd: Removed the BIO_RW_BARRIER support form the receiver/epoch code
  ...
parents 25a34554 cedb4a7d
......@@ -16,7 +16,7 @@ you can do so by typing:
As of the Linux 2.6.10 kernel, it is now possible to change the
IO scheduler for a given block device on the fly (thus making it possible,
for instance, to set the CFQ scheduler for the system default, but
set a specific device to use the anticipatory or noop schedulers - which
set a specific device to use the deadline or noop schedulers - which
can improve that device's throughput).
To set a specific scheduler, simply do this:
......@@ -31,7 +31,7 @@ a "cat /sys/block/DEV/queue/scheduler" - the list of valid names
will be displayed, with the currently selected scheduler in brackets:
# cat /sys/block/hda/queue/scheduler
noop anticipatory deadline [cfq]
# echo anticipatory > /sys/block/hda/queue/scheduler
noop deadline [cfq]
# echo deadline > /sys/block/hda/queue/scheduler
# cat /sys/block/hda/queue/scheduler
noop [anticipatory] deadline cfq
noop [deadline] cfq
......@@ -706,7 +706,7 @@ and is between 256 and 4096 characters. It is defined in the file
arch/x86/kernel/cpu/cpufreq/elanfreq.c.
elevator= [IOSCHED]
Format: {"anticipatory" | "cfq" | "deadline" | "noop"}
Format: {"cfq" | "deadline" | "noop"}
See Documentation/block/as-iosched.txt and
Documentation/block/deadline-iosched.txt for details.
......
......@@ -21,8 +21,8 @@ three rotations, respectively, to balance the tree), with slightly slower
To quote Linux Weekly News:
There are a number of red-black trees in use in the kernel.
The anticipatory, deadline, and CFQ I/O schedulers all employ
rbtrees to track requests; the packet CD/DVD driver does the same.
The deadline and CFQ I/O schedulers employ rbtrees to
track requests; the packet CD/DVD driver does the same.
The high-resolution timer code uses an rbtree to organize outstanding
timer requests. The ext3 filesystem tracks directory entries in a
red-black tree. Virtual memory areas (VMAs) are tracked with red-black
......
......@@ -1194,13 +1194,6 @@ static int __make_request(struct request_queue *q, struct bio *bio)
int where = ELEVATOR_INSERT_SORT;
int rw_flags;
/* REQ_HARDBARRIER is no more */
if (WARN_ONCE(bio->bi_rw & REQ_HARDBARRIER,
"block: HARDBARRIER is deprecated, use FLUSH/FUA instead\n")) {
bio_endio(bio, -EOPNOTSUPP);
return 0;
}
/*
* low level driver can indicate that it wants pages above a
* certain limit bounced to low memory (ie for highmem, or even
......@@ -1351,7 +1344,7 @@ static void handle_bad_sector(struct bio *bio)
bdevname(bio->bi_bdev, b),
bio->bi_rw,
(unsigned long long)bio->bi_sector + bio_sectors(bio),
(long long)(bio->bi_bdev->bd_inode->i_size >> 9));
(long long)(i_size_read(bio->bi_bdev->bd_inode) >> 9));
set_bit(BIO_EOF, &bio->bi_flags);
}
......@@ -1404,7 +1397,7 @@ static inline int bio_check_eod(struct bio *bio, unsigned int nr_sectors)
return 0;
/* Test device or partition size, when known. */
maxsector = bio->bi_bdev->bd_inode->i_size >> 9;
maxsector = i_size_read(bio->bi_bdev->bd_inode) >> 9;
if (maxsector) {
sector_t sector = bio->bi_sector;
......
......@@ -153,20 +153,6 @@ struct io_context *get_io_context(gfp_t gfp_flags, int node)
}
EXPORT_SYMBOL(get_io_context);
void copy_io_context(struct io_context **pdst, struct io_context **psrc)
{
struct io_context *src = *psrc;
struct io_context *dst = *pdst;
if (src) {
BUG_ON(atomic_long_read(&src->refcount) == 0);
atomic_long_inc(&src->refcount);
put_io_context(dst);
*pdst = src;
}
}
EXPORT_SYMBOL(copy_io_context);
static int __init blk_ioc_init(void)
{
iocontext_cachep = kmem_cache_create("blkdev_ioc",
......
......@@ -205,6 +205,8 @@ int blk_rq_map_user_iov(struct request_queue *q, struct request *rq,
unaligned = 1;
break;
}
if (!iov[i].iov_len)
return -EINVAL;
}
if (unaligned || (q->dma_pad_mask & len) || map_data)
......
......@@ -744,13 +744,13 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
bdi->ra_pages = (arg * 512) / PAGE_CACHE_SIZE;
return 0;
case BLKGETSIZE:
size = bdev->bd_inode->i_size;
size = i_size_read(bdev->bd_inode);
if ((size >> 9) > ~0UL)
return -EFBIG;
return compat_put_ulong(arg, size >> 9);
case BLKGETSIZE64_32:
return compat_put_u64(arg, bdev->bd_inode->i_size);
return compat_put_u64(arg, i_size_read(bdev->bd_inode));
case BLKTRACESETUP32:
case BLKTRACESTART: /* compatible */
......
......@@ -429,7 +429,7 @@ void elv_dispatch_sort(struct request_queue *q, struct request *rq)
q->nr_sorted--;
boundary = q->end_sector;
stop_flags = REQ_SOFTBARRIER | REQ_HARDBARRIER | REQ_STARTED;
stop_flags = REQ_SOFTBARRIER | REQ_STARTED;
list_for_each_prev(entry, &q->queue_head) {
struct request *pos = list_entry_rq(entry);
......@@ -691,7 +691,7 @@ void elv_insert(struct request_queue *q, struct request *rq, int where)
void __elv_add_request(struct request_queue *q, struct request *rq, int where,
int plug)
{
if (rq->cmd_flags & (REQ_SOFTBARRIER | REQ_HARDBARRIER)) {
if (rq->cmd_flags & REQ_SOFTBARRIER) {
/* barriers are scheduling boundary, update end_sector */
if (rq->cmd_type == REQ_TYPE_FS ||
(rq->cmd_flags & REQ_DISCARD)) {
......
......@@ -125,7 +125,7 @@ static int blk_ioctl_discard(struct block_device *bdev, uint64_t start,
start >>= 9;
len >>= 9;
if (start + len > (bdev->bd_inode->i_size >> 9))
if (start + len > (i_size_read(bdev->bd_inode) >> 9))
return -EINVAL;
if (secure)
flags |= BLKDEV_DISCARD_SECURE;
......@@ -242,6 +242,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
* We need to set the startsect first, the driver may
* want to override it.
*/
memset(&geo, 0, sizeof(geo));
geo.start = get_start_sect(bdev);
ret = disk->fops->getgeo(bdev, &geo);
if (ret)
......@@ -307,12 +308,12 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
ret = blkdev_reread_part(bdev);
break;
case BLKGETSIZE:
size = bdev->bd_inode->i_size;
size = i_size_read(bdev->bd_inode);
if ((size >> 9) > ~0UL)
return -EFBIG;
return put_ulong(arg, size >> 9);
case BLKGETSIZE64:
return put_u64(arg, bdev->bd_inode->i_size);
return put_u64(arg, i_size_read(bdev->bd_inode));
case BLKTRACESTART:
case BLKTRACESTOP:
case BLKTRACESETUP:
......
......@@ -321,33 +321,47 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
if (hdr->iovec_count) {
const int size = sizeof(struct sg_iovec) * hdr->iovec_count;
size_t iov_data_len;
struct sg_iovec *iov;
struct sg_iovec *sg_iov;
struct iovec *iov;
int i;
iov = kmalloc(size, GFP_KERNEL);
if (!iov) {
sg_iov = kmalloc(size, GFP_KERNEL);
if (!sg_iov) {
ret = -ENOMEM;
goto out;
}
if (copy_from_user(iov, hdr->dxferp, size)) {
kfree(iov);
if (copy_from_user(sg_iov, hdr->dxferp, size)) {
kfree(sg_iov);
ret = -EFAULT;
goto out;
}
/*
* Sum up the vecs, making sure they don't overflow
*/
iov = (struct iovec *) sg_iov;
iov_data_len = 0;
for (i = 0; i < hdr->iovec_count; i++) {
if (iov_data_len + iov[i].iov_len < iov_data_len) {
kfree(sg_iov);
ret = -EINVAL;
goto out;
}
iov_data_len += iov[i].iov_len;
}
/* SG_IO howto says that the shorter of the two wins */
iov_data_len = iov_length((struct iovec *)iov,
hdr->iovec_count);
if (hdr->dxfer_len < iov_data_len) {
hdr->iovec_count = iov_shorten((struct iovec *)iov,
hdr->iovec_count = iov_shorten(iov,
hdr->iovec_count,
hdr->dxfer_len);
iov_data_len = hdr->dxfer_len;
}
ret = blk_rq_map_user_iov(q, rq, NULL, iov, hdr->iovec_count,
ret = blk_rq_map_user_iov(q, rq, NULL, sg_iov, hdr->iovec_count,
iov_data_len, GFP_KERNEL);
kfree(iov);
kfree(sg_iov);
} else if (hdr->dxfer_len)
ret = blk_rq_map_user(q, rq, NULL, hdr->dxferp, hdr->dxfer_len,
GFP_KERNEL);
......
......@@ -180,9 +180,6 @@ aoeblk_make_request(struct request_queue *q, struct bio *bio)
BUG();
bio_endio(bio, -ENXIO);
return 0;
} else if (bio->bi_rw & REQ_HARDBARRIER) {
bio_endio(bio, -EOPNOTSUPP);
return 0;
} else if (bio->bi_io_vec == NULL) {
printk(KERN_ERR "aoe: bi_io_vec is NULL\n");
BUG();
......
......@@ -113,6 +113,8 @@ static struct board_type products[] = {
{0x409D0E11, "Smart Array 6400 EM", &SA5_access},
{0x40910E11, "Smart Array 6i", &SA5_access},
{0x3225103C, "Smart Array P600", &SA5_access},
{0x3223103C, "Smart Array P800", &SA5_access},
{0x3234103C, "Smart Array P400", &SA5_access},
{0x3235103C, "Smart Array P400i", &SA5_access},
{0x3211103C, "Smart Array E200i", &SA5_access},
{0x3212103C, "Smart Array E200", &SA5_access},
......@@ -3753,7 +3755,7 @@ static void __devinit cciss_wait_for_mode_change_ack(ctlr_info_t *h)
for (i = 0; i < MAX_CONFIG_WAIT; i++) {
if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
break;
msleep(10);
usleep_range(10000, 20000);
}
}
......@@ -3937,10 +3939,9 @@ static int __devinit cciss_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
*board_id = ((subsystem_device_id << 16) & 0xffff0000) |
subsystem_vendor_id;
for (i = 0; i < ARRAY_SIZE(products); i++) {
for (i = 0; i < ARRAY_SIZE(products); i++)
if (*board_id == products[i].board_id)
return i;
}
dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x, ignoring.\n",
*board_id);
return -ENODEV;
......@@ -3971,18 +3972,31 @@ static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev,
return -ENODEV;
}
static int __devinit cciss_wait_for_board_ready(ctlr_info_t *h)
static int __devinit cciss_wait_for_board_state(struct pci_dev *pdev,
void __iomem *vaddr, int wait_for_ready)
#define BOARD_READY 1
#define BOARD_NOT_READY 0
{
int i;
int i, iterations;
u32 scratchpad;
for (i = 0; i < CCISS_BOARD_READY_ITERATIONS; i++) {
scratchpad = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
if (wait_for_ready)
iterations = CCISS_BOARD_READY_ITERATIONS;
else
iterations = CCISS_BOARD_NOT_READY_ITERATIONS;
for (i = 0; i < iterations; i++) {
scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
if (wait_for_ready) {
if (scratchpad == CCISS_FIRMWARE_READY)
return 0;
} else {
if (scratchpad != CCISS_FIRMWARE_READY)
return 0;
}
msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS);
}
dev_warn(&h->pdev->dev, "board not ready, timed out.\n");
dev_warn(&pdev->dev, "board not ready, timed out.\n");
return -ENODEV;
}
......@@ -4031,6 +4045,11 @@ static int __devinit cciss_find_cfgtables(ctlr_info_t *h)
static void __devinit cciss_get_max_perf_mode_cmds(struct ctlr_info *h)
{
h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands));
/* Limit commands in memory limited kdump scenario. */
if (reset_devices && h->max_commands > 32)
h->max_commands = 32;
if (h->max_commands < 16) {
dev_warn(&h->pdev->dev, "Controller reports "
"max supported commands of %d, an obvious lie. "
......@@ -4148,7 +4167,7 @@ static int __devinit cciss_pci_init(ctlr_info_t *h)
err = -ENOMEM;
goto err_out_free_res;
}
err = cciss_wait_for_board_ready(h);
err = cciss_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
if (err)
goto err_out_free_res;
err = cciss_find_cfgtables(h);
......@@ -4313,36 +4332,6 @@ static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, u
#define cciss_soft_reset_controller(p) cciss_message(p, 1, 0)
#define cciss_noop(p) cciss_message(p, 3, 0)
static __devinit int cciss_reset_msi(struct pci_dev *pdev)
{
/* the #defines are stolen from drivers/pci/msi.h. */
#define msi_control_reg(base) (base + PCI_MSI_FLAGS)
#define PCI_MSIX_FLAGS_ENABLE (1 << 15)
int pos;
u16 control = 0;
pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
if (pos) {
pci_read_config_word(pdev, msi_control_reg(pos), &control);
if (control & PCI_MSI_FLAGS_ENABLE) {
dev_info(&pdev->dev, "resetting MSI\n");
pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE);
}
}
pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
if (pos) {
pci_read_config_word(pdev, msi_control_reg(pos), &control);
if (control & PCI_MSIX_FLAGS_ENABLE) {
dev_info(&pdev->dev, "resetting MSI-X\n");
pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE);
}
}
return 0;
}
static int cciss_controller_hard_reset(struct pci_dev *pdev,
void * __iomem vaddr, bool use_doorbell)
{
......@@ -4397,17 +4386,17 @@ static int cciss_controller_hard_reset(struct pci_dev *pdev,
* states or using the doorbell register. */
static __devinit int cciss_kdump_hard_reset_controller(struct pci_dev *pdev)
{
u16 saved_config_space[32];
u64 cfg_offset;
u32 cfg_base_addr;
u64 cfg_base_addr_index;
void __iomem *vaddr;
unsigned long paddr;
u32 misc_fw_support, active_transport;
int rc, i;
int rc;
CfgTable_struct __iomem *cfgtable;
bool use_doorbell;
u32 board_id;
u16 command_register;
/* For controllers as old a the p600, this is very nearly
* the same thing as
......@@ -4417,14 +4406,6 @@ static __devinit int cciss_kdump_hard_reset_controller(struct pci_dev *pdev)
* pci_set_power_state(pci_dev, PCI_D0);
* pci_restore_state(pci_dev);
*
* but we can't use these nice canned kernel routines on
* kexec, because they also check the MSI/MSI-X state in PCI
* configuration space and do the wrong thing when it is
* set/cleared. Also, the pci_save/restore_state functions
* violate the ordering requirements for restoring the
* configuration space from the CCISS document (see the
* comment below). So we roll our own ....
*
* For controllers newer than the P600, the pci power state
* method of resetting doesn't work so we have another way
* using the doorbell register.
......@@ -4443,8 +4424,13 @@ static __devinit int cciss_kdump_hard_reset_controller(struct pci_dev *pdev)
return -ENODEV;
}
for (i = 0; i < 32; i++)
pci_read_config_word(pdev, 2*i, &saved_config_space[i]);
/* Save the PCI command register */
pci_read_config_word(pdev, 4, &command_register);
/* Turn the board off. This is so that later pci_restore_state()
* won't turn the board on before the rest of config space is ready.
*/
pci_disable_device(pdev);
pci_save_state(pdev);
/* find the first memory BAR, so we can find the cfg table */
rc = cciss_pci_find_memory_BAR(pdev, &paddr);
......@@ -4479,26 +4465,32 @@ static __devinit int cciss_kdump_hard_reset_controller(struct pci_dev *pdev)
rc = cciss_controller_hard_reset(pdev, vaddr, use_doorbell);
if (rc)
goto unmap_cfgtable;
/* Restore the PCI configuration space. The Open CISS
* Specification says, "Restore the PCI Configuration
* Registers, offsets 00h through 60h. It is important to
* restore the command register, 16-bits at offset 04h,
* last. Do not restore the configuration status register,
* 16-bits at offset 06h." Note that the offset is 2*i.
*/
for (i = 0; i < 32; i++) {
if (i == 2 || i == 3)
continue;
pci_write_config_word(pdev, 2*i, saved_config_space[i]);
pci_restore_state(pdev);
rc = pci_enable_device(pdev);
if (rc) {
dev_warn(&pdev->dev, "failed to enable device.\n");
goto unmap_cfgtable;
}
wmb();
pci_write_config_word(pdev, 4, saved_config_space[2]);
pci_write_config_word(pdev, 4, command_register);
/* Some devices (notably the HP Smart Array 5i Controller)
need a little pause here */
msleep(CCISS_POST_RESET_PAUSE_MSECS);
/* Wait for board to become not ready, then ready. */
dev_info(&pdev->dev, "Waiting for board to become ready.\n");
rc = cciss_wait_for_board_state(pdev, vaddr, BOARD_NOT_READY);
if (rc) /* Don't bail, might be E500, etc. which can't be reset */
dev_warn(&pdev->dev,
"failed waiting for board to become not ready\n");
rc = cciss_wait_for_board_state(pdev, vaddr, BOARD_READY);
if (rc) {
dev_warn(&pdev->dev,
"failed waiting for board to become ready\n");
goto unmap_cfgtable;
}
dev_info(&pdev->dev, "board ready.\n");
/* Controller should be in simple mode at this point. If it's not,
* It means we're on one of those controllers which doesn't support
* the doorbell reset method and on which the PCI power management reset
......@@ -4539,8 +4531,6 @@ static __devinit int cciss_init_reset_devices(struct pci_dev *pdev)
return 0; /* just try to do the kdump anyhow. */
if (rc)
return -ENODEV;
if (cciss_reset_msi(pdev))
return -ENODEV;
/* Now try to get the controller to respond to a no-op */
for (i = 0; i < CCISS_POST_RESET_NOOP_RETRIES; i++) {
......@@ -4936,6 +4926,7 @@ static void __exit cciss_cleanup(void)
}
}
kthread_stop(cciss_scan_thread);
if (proc_cciss)
remove_proc_entry("driver/cciss", NULL);
bus_unregister(&cciss_bus_type);
}
......
......@@ -200,10 +200,14 @@ struct ctlr_info
* the above.
*/
#define CCISS_BOARD_READY_WAIT_SECS (120)
#define CCISS_BOARD_NOT_READY_WAIT_SECS (10)
#define CCISS_BOARD_READY_POLL_INTERVAL_MSECS (100)
#define CCISS_BOARD_READY_ITERATIONS \
((CCISS_BOARD_READY_WAIT_SECS * 1000) / \
CCISS_BOARD_READY_POLL_INTERVAL_MSECS)
#define CCISS_BOARD_NOT_READY_ITERATIONS \
((CCISS_BOARD_NOT_READY_WAIT_SECS * 1000) / \
CCISS_BOARD_READY_POLL_INTERVAL_MSECS)
#define CCISS_POST_RESET_PAUSE_MSECS (3000)
#define CCISS_POST_RESET_NOOP_INTERVAL_MSECS (1000)
#define CCISS_POST_RESET_NOOP_RETRIES (12)
......
......@@ -78,11 +78,10 @@ static int _drbd_md_sync_page_io(struct drbd_conf *mdev,
init_completion(&md_io.event);
md_io.error = 0;
if ((rw & WRITE) && !test_bit(MD_NO_BARRIER, &mdev->flags))
rw |= REQ_HARDBARRIER;
if ((rw & WRITE) && !test_bit(MD_NO_FUA, &mdev->flags))
rw |= REQ_FUA;
rw |= REQ_UNPLUG | REQ_SYNC;
retry:
bio = bio_alloc(GFP_NOIO, 1);
bio->bi_bdev = bdev->md_bdev;
bio->bi_sector = sector;
......@@ -100,17 +99,6 @@ static int _drbd_md_sync_page_io(struct drbd_conf *mdev,
wait_for_completion(&md_io.event);
ok = bio_flagged(bio, BIO_UPTODATE) && md_io.error == 0;
/* check for unsupported barrier op.
* would rather check on EOPNOTSUPP, but that is not reliable.
* don't try again for ANY return value != 0 */
if (unlikely((bio->bi_rw & REQ_HARDBARRIER) && !ok)) {
/* Try again with no barrier */
dev_warn(DEV, "Barriers not supported on meta data device - disabling\n");
set_bit(MD_NO_BARRIER, &mdev->flags);
rw &= ~REQ_HARDBARRIER;
bio_put(bio);
goto retry;
}
out:
bio_put(bio);
return ok;
......@@ -284,18 +272,32 @@ w_al_write_transaction(struct drbd_conf *mdev, struct drbd_work *w, int unused)
u32 xor_sum = 0;
if (!get_ldev(mdev)) {
dev_err(DEV, "get_ldev() failed in w_al_write_transaction\n");
dev_err(DEV,
"disk is %s, cannot start al transaction (-%d +%d)\n",
drbd_disk_str(mdev->state.disk), evicted, new_enr);
complete(&((struct update_al_work *)w)->event);
return 1;
}
/* do we have to do a bitmap write, first?
* TODO reduce maximum latency:
* submit both bios, then wait for both,
* instead of doing two synchronous sector writes. */
* instead of doing two synchronous sector writes.
* For now, we must not write the transaction,
* if we cannot write out the bitmap of the evicted extent. */
if (mdev->state.conn < C_CONNECTED && evicted != LC_FREE)
drbd_bm_write_sect(mdev, evicted/AL_EXT_PER_BM_SECT);
mutex_lock(&mdev->md_io_mutex); /* protects md_io_page, al_tr_cycle, ... */
/* The bitmap write may have failed, causing a state change. */
if (mdev->state.disk < D_INCONSISTENT) {
dev_err(DEV,
"disk is %s, cannot write al transaction (-%d +%d)\n",
drbd_disk_str(mdev->state.disk), evicted, new_enr);
complete(&((struct update_al_work *)w)->event);
put_ldev(mdev);
return 1;
}
mutex_lock(&mdev->md_io_mutex); /* protects md_io_buffer, al_tr_cycle, ... */
buffer = (struct al_transaction *)page_address(mdev->md_io_page);
buffer->magic = __constant_cpu_to_be32(DRBD_MAGIC);
......@@ -739,7 +741,7 @@ void drbd_al_apply_to_bm(struct drbd_conf *mdev)
unsigned int enr;
unsigned long add = 0;
char ppb[10];
int i;
int i, tmp;
wait_event(mdev->al_wait, lc_try_lock(mdev->act_log));
......@@ -747,7 +749,9 @@ void drbd_al_apply_to_bm(struct drbd_conf *mdev)
enr = lc_element_by_index(mdev->act_log, i)->lc_number;
if (enr == LC_FREE)
continue;
add += drbd_bm_ALe_set_all(mdev, enr);
tmp = drbd_bm_ALe_set_all(mdev, enr);
dynamic_dev_dbg(DEV, "AL: set %d bits in extent %u\n", tmp, enr);
add += tmp;
}
lc_unlock(mdev->act_log);
......
......@@ -116,7 +116,7 @@ struct drbd_conf;
#define ERR_IF(exp) if (({ \
int _b = (exp) != 0; \
if (_b) dev_err(DEV, "%s: (%s) in %s:%d\n", \
if (_b) dev_err(DEV, "ASSERT FAILED: %s: (%s) in %s:%d\n", \
__func__, #exp, __FILE__, __LINE__); \
_b; \
}))
......@@ -749,17 +749,12 @@ struct drbd_epoch {
/* drbd_epoch flag bits */
enum {
DE_BARRIER_IN_NEXT_EPOCH_ISSUED,
DE_BARRIER_IN_NEXT_EPOCH_DONE,
DE_CONTAINS_A_BARRIER,
DE_HAVE_BARRIER_NUMBER,
DE_IS_FINISHING,
};
enum epoch_event {
EV_PUT,
EV_GOT_BARRIER_NR,
EV_BARRIER_DONE,
EV_BECAME_LAST,
EV_CLEANUP = 32, /* used as flag */
};
......@@ -801,11 +796,6 @@ enum {
__EE_CALL_AL_COMPLETE_IO,
__EE_MAY_SET_IN_SYNC,
/* This epoch entry closes an epoch using a barrier.
* On sucessful completion, the epoch is released,
* and the P_BARRIER_ACK send. */
__EE_IS_BARRIER,
/* In case a barrier failed,
* we need to resubmit without the barrier flag. */
__EE_RESUBMITTED,
......@@ -820,7 +810,6 @@ enum {
};
#define EE_CALL_AL_COMPLETE_IO (1<<__EE_CALL_AL_COMPLETE_IO)
#define EE_MAY_SET_IN_SYNC (1<<__EE_MAY_SET_IN_SYNC)
#define EE_IS_BARRIER (1<<__EE_IS_BARRIER)
#define EE_RESUBMITTED (1<<__EE_RESUBMITTED)
#define EE_WAS_ERROR (1<<__EE_WAS_ERROR)
#define EE_HAS_DIGEST (1<<__EE_HAS_DIGEST)
......@@ -843,16 +832,15 @@ enum {
* Gets cleared when the state.conn
* goes into C_CONNECTED state. */
WRITE_BM_AFTER_RESYNC, /* A kmalloc() during resync failed */
NO_BARRIER_SUPP, /* underlying block device doesn't implement barriers */
CONSIDER_RESYNC,
MD_NO_BARRIER, /* meta data device does not support barriers,
so don't even try */
MD_NO_FUA, /* Users wants us to not use FUA/FLUSH on meta data dev */
SUSPEND_IO, /* suspend application io */
BITMAP_IO, /* suspend application io;
once no more io in flight, start bitmap io */
BITMAP_IO_QUEUED, /* Started bitmap IO */
GO_DISKLESS, /* Disk failed, local_cnt reached zero, we are going diskless */
GO_DISKLESS, /* Disk is being detached, on io-error or admin request. */
WAS_IO_ERROR, /* Local disk failed returned IO error */
RESYNC_AFTER_NEG, /* Resync after online grow after the attach&negotiate finished. */
NET_CONGESTED, /* The data socket is congested */
......@@ -947,7 +935,6 @@ enum write_ordering_e {
WO_none,
WO_drain_io,
WO_bdev_flush,
WO_bio_barrier
};
struct fifo_buffer {
......@@ -1281,6 +1268,7 @@ extern int drbd_bmio_set_n_write(struct drbd_conf *mdev);
extern int drbd_bmio_clear_n_write(struct drbd_conf *mdev);
extern int drbd_bitmap_io(struct drbd_conf *mdev, int (*io_fn)(struct drbd_conf *), char *why);
extern void drbd_go_diskless(struct drbd_conf *mdev);
extern void drbd_ldev_destroy(struct drbd_conf *mdev);
/* Meta data layout
......@@ -1798,17 +1786,17 @@ static inline void __drbd_chk_io_error_(struct drbd_conf *mdev, int forcedetach,
case EP_PASS_ON:
if (!forcedetach) {
if (__ratelimit(&drbd_ratelimit_state))
dev_err(DEV, "Local IO failed in %s."
"Passing error on...\n", where);
dev_err(DEV, "Local IO failed in %s.\n", where);
break;
}
/* NOTE fall through to detach case if forcedetach set */
case EP_DETACH:
case EP_CALL_HELPER:
set_bit(WAS_IO_ERROR, &mdev->flags);
if (mdev->state.disk > D_FAILED) {
_drbd_set_state(_NS(mdev, disk, D_FAILED), CS_HARD, NULL);
dev_err(DEV, "Local IO failed in %s."
"Detaching...\n", where);
dev_err(DEV,
"Local IO failed in %s. Detaching...\n", where);
}
break;
}
......@@ -1874,7 +1862,7 @@ static inline sector_t drbd_md_last_sector(struct drbd_backing_dev *bdev)
static inline sector_t drbd_get_capacity(struct block_device *bdev)
{
/* return bdev ? get_capacity(bdev->bd_disk) : 0; */
return bdev ? bdev->bd_inode->i_size >> 9 : 0;
return bdev ? i_size_read(bdev->bd_inode) >> 9 : 0;
}
/**
......@@ -2127,7 +2115,11 @@ static inline void put_ldev(struct drbd_conf *mdev)
__release(local);
D_ASSERT(i >= 0);
if (i == 0) {
if (mdev->state.disk == D_DISKLESS)
/* even internal references gone, safe to destroy */
drbd_ldev_destroy(mdev);
if (mdev->state.disk == D_FAILED)
/* all application IO references gone. */
drbd_go_diskless(mdev);
wake_up(&mdev->misc_wait);
}
......@@ -2138,6 +2130,10 @@ static inline int _get_ldev_if_state(struct drbd_conf *mdev, enum drbd_disk_stat
{
int io_allowed;
/* never get a reference while D_DISKLESS */
if (mdev->state.disk == D_DISKLESS)
return 0;
atomic_inc(&mdev->local_cnt);
io_allowed = (mdev->state.disk >= mins);
if (!io_allowed)
......@@ -2406,12 +2402,12 @@ static inline void drbd_md_flush(struct drbd_conf *mdev)
{
int r;
if (test_bit(MD_NO_BARRIER, &mdev->flags))
if (test_bit(MD_NO_FUA, &mdev->flags))
return;
r = blkdev_issue_flush(mdev->ldev->md_bdev, GFP_KERNEL, NULL);
if (r) {
set_bit(MD_NO_BARRIER, &mdev->flags);
set_bit(MD_NO_FUA, &mdev->flags);
dev_err(DEV, "meta data flush failed with status %d, disabling md-flushes\n", r);
}
}
......
......@@ -835,6 +835,15 @@ static union drbd_state sanitize_state(struct drbd_conf *mdev, union drbd_state
ns.conn != C_UNCONNECTED && ns.conn != C_DISCONNECTING && ns.conn <= C_TEAR_DOWN)
ns.conn = os.conn;
/* we cannot fail (again) if we already detached */
if (ns.disk == D_FAILED && os.disk == D_DISKLESS)
ns.disk = D_DISKLESS;
/* if we are only D_ATTACHING yet,
* we can (and should) go directly to D_DISKLESS. */
if (ns.disk == D_FAILED && os.disk == D_ATTACHING)
ns.disk = D_DISKLESS;
/* After C_DISCONNECTING only C_STANDALONE may follow */
if (os.conn == C_DISCONNECTING && ns.conn != C_STANDALONE)
ns.conn = os.conn;
......@@ -1056,7 +1065,15 @@ int __drbd_set_state(struct drbd_conf *mdev,
!test_and_set_bit(CONFIG_PENDING, &mdev->flags))
set_bit(DEVICE_DYING, &mdev->flags);
mdev->state.i = ns.i;
/* if we are going -> D_FAILED or D_DISKLESS, grab one extra reference
* on the ldev here, to be sure the transition -> D_DISKLESS resp.
* drbd_ldev_destroy() won't happen before our corresponding
* after_state_ch works run, where we put_ldev again. */
if ((os.disk != D_FAILED && ns.disk == D_FAILED) ||
(os.disk != D_DISKLESS && ns.disk == D_DISKLESS))
atomic_inc(&mdev->local_cnt);
mdev->state = ns;
wake_up(&mdev->misc_wait);
wake_up(&mdev->state_wait);
......@@ -1268,7 +1285,6 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
if (test_bit(NEW_CUR_UUID, &mdev->flags)) {
drbd_uuid_new_current(mdev);
clear_bit(NEW_CUR_UUID, &mdev->flags);
drbd_md_sync(mdev);
}
spin_lock_irq(&mdev->req_lock);
_drbd_set_state(_NS(mdev, susp_fen, 0), CS_VERBOSE, NULL);
......@@ -1365,35 +1381,46 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
os.disk > D_INCONSISTENT && ns.disk == D_INCONSISTENT)
drbd_queue_bitmap_io(mdev, &drbd_bmio_set_n_write, NULL, "set_n_write from invalidate");
/* first half of local IO error */
if (os.disk > D_FAILED && ns.disk == D_FAILED) {
enum drbd_io_error_p eh = EP_PASS_ON;
/* first half of local IO error, failure to attach,
* or administrative detach */
if (os.disk != D_FAILED && ns.disk == D_FAILED) {
enum drbd_io_error_p eh;
int was_io_error;
/* corresponding get_ldev was in __drbd_set_state, to serialize
* our cleanup here with the transition to D_DISKLESS,
* so it is safe to dreference ldev here. */
eh = mdev->ldev->dc.on_io_error;
was_io_error = test_and_clear_bit(WAS_IO_ERROR, &mdev->flags);
/* current state still has to be D_FAILED,
* there is only one way out: to D_DISKLESS,
* and that may only happen after our put_ldev below. */
if (mdev->state.disk != D_FAILED)
dev_err(DEV,
"ASSERT FAILED: disk is %s during detach\n",
drbd_disk_str(mdev->state.disk));
if (drbd_send_state(mdev))
dev_warn(DEV, "Notified peer that my disk is broken.\n");
dev_warn(DEV, "Notified peer that I am detaching my disk\n");
else
dev_err(DEV, "Sending state for drbd_io_error() failed\n");
dev_err(DEV, "Sending state for detaching disk failed\n");
drbd_rs_cancel_all(mdev);
if (get_ldev_if_state(mdev, D_FAILED)) {
eh = mdev->ldev->dc.on_io_error;
/* In case we want to get something to stable storage still,
* this may be the last chance.
* Following put_ldev may transition to D_DISKLESS. */
drbd_md_sync(mdev);
put_ldev(mdev);
}
if (eh == EP_CALL_HELPER)
drbd_khelper(mdev, "local-io-error");
}
/* second half of local IO error handling,
* after local_cnt references have reached zero: */
if (os.disk == D_FAILED && ns.disk == D_DISKLESS) {
mdev->rs_total = 0;
mdev->rs_failed = 0;
atomic_set(&mdev->rs_pending_cnt, 0);
if (was_io_error && eh == EP_CALL_HELPER)
drbd_khelper(mdev, "local-io-error");
}
if (os.disk > D_DISKLESS && ns.disk == D_DISKLESS) {
/* second half of local IO error, failure to attach,
* or administrative detach,
* after local_cnt references have reached zero again */
if (os.disk != D_DISKLESS && ns.disk == D_DISKLESS) {
/* We must still be diskless,
* re-attach has to be serialized with this! */
if (mdev->state.disk != D_DISKLESS)
......@@ -1401,27 +1428,17 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
"ASSERT FAILED: disk is %s while going diskless\n",
drbd_disk_str(mdev->state.disk));
/* we cannot assert local_cnt == 0 here, as get_ldev_if_state
* will inc/dec it frequently. Since we became D_DISKLESS, no
* one has touched the protected members anymore, though, so we
* are safe to free them here. */
mdev->rs_total = 0;
mdev->rs_failed = 0;
atomic_set(&mdev->rs_pending_cnt, 0);
if (drbd_send_state(mdev))
dev_warn(DEV, "Notified peer that I detached my disk.\n");
dev_warn(DEV, "Notified peer that I'm now diskless.\n");
else
dev_err(DEV, "Sending state for detach failed\n");
lc_destroy(mdev->resync);
mdev->resync = NULL;
lc_destroy(mdev->act_log);
mdev->act_log = NULL;
__no_warn(local,
drbd_free_bc(mdev->ldev);
mdev->ldev = NULL;);
if (mdev->md_io_tmpp) {
__free_page(mdev->md_io_tmpp);
mdev->md_io_tmpp = NULL;
}
dev_err(DEV, "Sending state for being diskless failed\n");
/* corresponding get_ldev in __drbd_set_state
* this may finaly trigger drbd_ldev_destroy. */
put_ldev(mdev);
}
/* Disks got bigger while they were detached */
......@@ -2772,11 +2789,6 @@ void drbd_init_set_defaults(struct drbd_conf *mdev)
drbd_set_defaults(mdev);
/* for now, we do NOT yet support it,
* even though we start some framework
* to eventually support barriers */
set_bit(NO_BARRIER_SUPP, &mdev->flags);
atomic_set(&mdev->ap_bio_cnt, 0);
atomic_set(&mdev->ap_pending_cnt, 0);
atomic_set(&mdev->rs_pending_cnt, 0);
......@@ -2842,7 +2854,7 @@ void drbd_init_set_defaults(struct drbd_conf *mdev)
drbd_thread_init(mdev, &mdev->asender, drbd_asender);
mdev->agreed_pro_version = PRO_VERSION_MAX;
mdev->write_ordering = WO_bio_barrier;
mdev->write_ordering = WO_bdev_flush;
mdev->resync_wenr = LC_FREE;
}
......@@ -2899,7 +2911,6 @@ void drbd_mdev_cleanup(struct drbd_conf *mdev)
D_ASSERT(list_empty(&mdev->resync_work.list));
D_ASSERT(list_empty(&mdev->unplug_work.list));
D_ASSERT(list_empty(&mdev->go_diskless.list));
}
......@@ -3660,6 +3671,8 @@ void drbd_uuid_new_current(struct drbd_conf *mdev) __must_hold(local)
get_random_bytes(&val, sizeof(u64));
_drbd_uuid_set(mdev, UI_CURRENT, val);
/* get it to stable storage _now_ */
drbd_md_sync(mdev);
}
void drbd_uuid_set_bm(struct drbd_conf *mdev, u64 val) __must_hold(local)
......@@ -3756,19 +3769,31 @@ static int w_bitmap_io(struct drbd_conf *mdev, struct drbd_work *w, int unused)
return 1;
}
void drbd_ldev_destroy(struct drbd_conf *mdev)
{
lc_destroy(mdev->resync);
mdev->resync = NULL;
lc_destroy(mdev->act_log);
mdev->act_log = NULL;
__no_warn(local,
drbd_free_bc(mdev->ldev);
mdev->ldev = NULL;);
if (mdev->md_io_tmpp) {
__free_page(mdev->md_io_tmpp);
mdev->md_io_tmpp = NULL;
}
clear_bit(GO_DISKLESS, &mdev->flags);
}
static int w_go_diskless(struct drbd_conf *mdev, struct drbd_work *w, int unused)
{
D_ASSERT(mdev->state.disk == D_FAILED);
/* we cannot assert local_cnt == 0 here, as get_ldev_if_state will
* inc/dec it frequently. Once we are D_DISKLESS, no one will touch
* the protected members anymore, though, so in the after_state_ch work
* it will be safe to free them. */
* the protected members anymore, though, so once put_ldev reaches zero
* again, it will be safe to free them. */
drbd_force_state(mdev, NS(disk, D_DISKLESS));
/* We need to wait for return of references checked out while we still
* have been D_FAILED, though (drbd_md_sync, bitmap io). */
wait_event(mdev->misc_wait, !atomic_read(&mdev->local_cnt));
clear_bit(GO_DISKLESS, &mdev->flags);
return 1;
}
......@@ -3777,9 +3802,6 @@ void drbd_go_diskless(struct drbd_conf *mdev)
D_ASSERT(mdev->state.disk == D_FAILED);
if (!test_and_set_bit(GO_DISKLESS, &mdev->flags))
drbd_queue_work(&mdev->data.work, &mdev->go_diskless);
/* don't drbd_queue_work_front,
* we need to serialize with the after_state_ch work
* of the -> D_FAILED transition. */
}
/**
......
......@@ -870,6 +870,11 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
retcode = ERR_DISK_CONFIGURED;
goto fail;
}
/* It may just now have detached because of IO error. Make sure
* drbd_ldev_destroy is done already, we may end up here very fast,
* e.g. if someone calls attach from the on-io-error handler,
* to realize a "hot spare" feature (not that I'd recommend that) */
wait_event(mdev->misc_wait, !atomic_read(&mdev->local_cnt));
/* allocation not in the IO path, cqueue thread context */
nbc = kzalloc(sizeof(struct drbd_backing_dev), GFP_KERNEL);
......@@ -1098,9 +1103,9 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
/* Reset the "barriers don't work" bits here, then force meta data to
* be written, to ensure we determine if barriers are supported. */
if (nbc->dc.no_md_flush)
set_bit(MD_NO_BARRIER, &mdev->flags);
set_bit(MD_NO_FUA, &mdev->flags);
else
clear_bit(MD_NO_BARRIER, &mdev->flags);
clear_bit(MD_NO_FUA, &mdev->flags);
/* Point of no return reached.
* Devices and memory are no longer released by error cleanup below.
......@@ -1112,8 +1117,8 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
nbc = NULL;
resync_lru = NULL;
mdev->write_ordering = WO_bio_barrier;
drbd_bump_write_ordering(mdev, WO_bio_barrier);
mdev->write_ordering = WO_bdev_flush;
drbd_bump_write_ordering(mdev, WO_bdev_flush);
if (drbd_md_test_flag(mdev->ldev, MDF_CRASHED_PRIMARY))
set_bit(CRASHED_PRIMARY, &mdev->flags);
......@@ -1262,7 +1267,7 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
force_diskless_dec:
put_ldev(mdev);
force_diskless:
drbd_force_state(mdev, NS(disk, D_DISKLESS));
drbd_force_state(mdev, NS(disk, D_FAILED));
drbd_md_sync(mdev);
release_bdev2_fail:
if (nbc)
......@@ -1285,10 +1290,19 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
return 0;
}
/* Detaching the disk is a process in multiple stages. First we need to lock
* out application IO, in-flight IO, IO stuck in drbd_al_begin_io.
* Then we transition to D_DISKLESS, and wait for put_ldev() to return all
* internal references as well.
* Only then we have finally detached. */
static int drbd_nl_detach(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
struct drbd_nl_cfg_reply *reply)
{
drbd_suspend_io(mdev); /* so no-one is stuck in drbd_al_begin_io */
reply->ret_code = drbd_request_state(mdev, NS(disk, D_DISKLESS));
if (mdev->state.disk == D_DISKLESS)
wait_event(mdev->misc_wait, !atomic_read(&mdev->local_cnt));
drbd_resume_io(mdev);
return 0;
}
......@@ -1953,7 +1967,6 @@ static int drbd_nl_resume_io(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
if (test_bit(NEW_CUR_UUID, &mdev->flags)) {
drbd_uuid_new_current(mdev);
clear_bit(NEW_CUR_UUID, &mdev->flags);
drbd_md_sync(mdev);
}
drbd_suspend_io(mdev);
reply->ret_code = drbd_request_state(mdev, NS3(susp, 0, susp_nod, 0, susp_fen, 0));
......
......@@ -158,7 +158,6 @@ static int drbd_seq_show(struct seq_file *seq, void *v)
[WO_none] = 'n',
[WO_drain_io] = 'd',
[WO_bdev_flush] = 'f',
[WO_bio_barrier] = 'b',
};
seq_printf(seq, "version: " REL_VERSION " (api:%d/proto:%d-%d)\n%s\n",
......
This diff is collapsed.
......@@ -258,7 +258,7 @@ void _req_may_be_done(struct drbd_request *req, struct bio_and_error *m)
if (!hlist_unhashed(&req->colision))
hlist_del(&req->colision);
else
D_ASSERT((s & RQ_NET_MASK) == 0);
D_ASSERT((s & (RQ_NET_MASK & ~RQ_NET_DONE)) == 0);
/* for writes we need to do some extra housekeeping */
if (rw == WRITE)
......@@ -813,6 +813,7 @@ static int drbd_make_request_common(struct drbd_conf *mdev, struct bio *bio)
mdev->state.conn >= C_CONNECTED));
if (!(local || remote) && !is_susp(mdev->state)) {
if (__ratelimit(&drbd_ratelimit_state))
dev_err(DEV, "IO ERROR: neither local nor remote disk\n");
goto fail_free_complete;
}
......@@ -942,12 +943,21 @@ static int drbd_make_request_common(struct drbd_conf *mdev, struct bio *bio)
if (local) {
req->private_bio->bi_bdev = mdev->ldev->backing_bdev;
/* State may have changed since we grabbed our reference on the
* mdev->ldev member. Double check, and short-circuit to endio.
* In case the last activity log transaction failed to get on
* stable storage, and this is a WRITE, we may not even submit
* this bio. */
if (get_ldev(mdev)) {
if (FAULT_ACTIVE(mdev, rw == WRITE ? DRBD_FAULT_DT_WR
: rw == READ ? DRBD_FAULT_DT_RD
: DRBD_FAULT_DT_RA))
bio_endio(req->private_bio, -EIO);
else
generic_make_request(req->private_bio);
put_ldev(mdev);
} else
bio_endio(req->private_bio, -EIO);
}
/* we need to plug ALWAYS since we possibly need to kick lo_dev.
......@@ -1022,20 +1032,6 @@ int drbd_make_request_26(struct request_queue *q, struct bio *bio)
return 0;
}
/* Reject barrier requests if we know the underlying device does
* not support them.
* XXX: Need to get this info from peer as well some how so we
* XXX: reject if EITHER side/data/metadata area does not support them.
*
* because of those XXX, this is not yet enabled,
* i.e. in drbd_init_set_defaults we set the NO_BARRIER_SUPP bit.
*/
if (unlikely(bio->bi_rw & REQ_HARDBARRIER) && test_bit(NO_BARRIER_SUPP, &mdev->flags)) {
/* dev_warn(DEV, "Rejecting barrier request as underlying device does not support\n"); */
bio_endio(bio, -EOPNOTSUPP);
return 0;
}
/*
* what we "blindly" assume:
*/
......
......@@ -102,12 +102,6 @@ void drbd_endio_read_sec_final(struct drbd_epoch_entry *e) __releases(local)
put_ldev(mdev);
}
static int is_failed_barrier(int ee_flags)
{
return (ee_flags & (EE_IS_BARRIER|EE_WAS_ERROR|EE_RESUBMITTED))
== (EE_IS_BARRIER|EE_WAS_ERROR);
}
/* writes on behalf of the partner, or resync writes,
* "submitted" by the receiver, final stage. */
static void drbd_endio_write_sec_final(struct drbd_epoch_entry *e) __releases(local)
......@@ -119,21 +113,6 @@ static void drbd_endio_write_sec_final(struct drbd_epoch_entry *e) __releases(lo
int is_syncer_req;
int do_al_complete_io;
/* if this is a failed barrier request, disable use of barriers,
* and schedule for resubmission */
if (is_failed_barrier(e->flags)) {
drbd_bump_write_ordering(mdev, WO_bdev_flush);
spin_lock_irqsave(&mdev->req_lock, flags);
list_del(&e->w.list);
e->flags = (e->flags & ~EE_WAS_ERROR) | EE_RESUBMITTED;
e->w.cb = w_e_reissue;
/* put_ldev actually happens below, once we come here again. */
__release(local);
spin_unlock_irqrestore(&mdev->req_lock, flags);
drbd_queue_work(&mdev->data.work, &e->w);
return;
}
D_ASSERT(e->block_id != ID_VACANT);
/* after we moved e to done_ee,
......@@ -925,7 +904,7 @@ int drbd_resync_finished(struct drbd_conf *mdev)
drbd_md_sync(mdev);
if (test_and_clear_bit(WRITE_BM_AFTER_RESYNC, &mdev->flags)) {
dev_warn(DEV, "Writing the whole bitmap, due to failed kmalloc\n");
dev_info(DEV, "Writing the whole bitmap\n");
drbd_queue_bitmap_io(mdev, &drbd_bm_write, NULL, "write from resync_finished");
}
......
......@@ -481,12 +481,6 @@ static int do_bio_filebacked(struct loop_device *lo, struct bio *bio)
if (bio_rw(bio) == WRITE) {
struct file *file = lo->lo_backing_file;
/* REQ_HARDBARRIER is deprecated */
if (bio->bi_rw & REQ_HARDBARRIER) {
ret = -EOPNOTSUPP;
goto out;
}
if (bio->bi_rw & REQ_FLUSH) {
ret = vfs_fsync(file, 0);
if (unlikely(ret && ret != -EINVAL)) {
......
......@@ -289,8 +289,6 @@ static int blkif_queue_request(struct request *req)
ring_req->operation = rq_data_dir(req) ?
BLKIF_OP_WRITE : BLKIF_OP_READ;
if (req->cmd_flags & REQ_HARDBARRIER)
ring_req->operation = BLKIF_OP_WRITE_BARRIER;
ring_req->nr_segments = blk_rq_map_sg(req->q, req, info->sg);
BUG_ON(ring_req->nr_segments > BLKIF_MAX_SEGMENTS_PER_REQUEST);
......
......@@ -706,7 +706,7 @@ static struct mdk_personality *find_pers(int level, char *clevel)
/* return the offset of the super block in 512byte sectors */
static inline sector_t calc_dev_sboffset(struct block_device *bdev)
{
sector_t num_sectors = bdev->bd_inode->i_size / 512;
sector_t num_sectors = i_size_read(bdev->bd_inode) / 512;
return MD_NEW_SIZE_SECTORS(num_sectors);
}
......@@ -1386,7 +1386,7 @@ static int super_1_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version)
*/
switch(minor_version) {
case 0:
sb_start = rdev->bdev->bd_inode->i_size >> 9;
sb_start = i_size_read(rdev->bdev->bd_inode) >> 9;
sb_start -= 8*2;
sb_start &= ~(sector_t)(4*2-1);
break;
......@@ -1472,7 +1472,7 @@ static int super_1_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version)
ret = 0;
}
if (minor_version)
rdev->sectors = (rdev->bdev->bd_inode->i_size >> 9) -
rdev->sectors = (i_size_read(rdev->bdev->bd_inode) >> 9) -
le64_to_cpu(sb->data_offset);
else
rdev->sectors = rdev->sb_start;
......@@ -1680,7 +1680,7 @@ super_1_rdev_size_change(mdk_rdev_t *rdev, sector_t num_sectors)
return 0; /* component must fit device */
if (rdev->sb_start < rdev->data_offset) {
/* minor versions 1 and 2; superblock before data */
max_sectors = rdev->bdev->bd_inode->i_size >> 9;
max_sectors = i_size_read(rdev->bdev->bd_inode) >> 9;
max_sectors -= rdev->data_offset;
if (!num_sectors || num_sectors > max_sectors)
num_sectors = max_sectors;
......@@ -1690,7 +1690,7 @@ super_1_rdev_size_change(mdk_rdev_t *rdev, sector_t num_sectors)
} else {
/* minor version 0; superblock after data */
sector_t sb_start;
sb_start = (rdev->bdev->bd_inode->i_size >> 9) - 8*2;
sb_start = (i_size_read(rdev->bdev->bd_inode) >> 9) - 8*2;
sb_start &= ~(sector_t)(4*2 - 1);
max_sectors = rdev->sectors + sb_start - rdev->sb_start;
if (!num_sectors || num_sectors > max_sectors)
......@@ -2584,7 +2584,7 @@ rdev_size_store(mdk_rdev_t *rdev, const char *buf, size_t len)
if (!sectors)
return -EBUSY;
} else if (!sectors)
sectors = (rdev->bdev->bd_inode->i_size >> 9) -
sectors = (i_size_read(rdev->bdev->bd_inode) >> 9) -
rdev->data_offset;
}
if (sectors < my_mddev->dev_sectors)
......@@ -2797,7 +2797,7 @@ static mdk_rdev_t *md_import_device(dev_t newdev, int super_format, int super_mi
kobject_init(&rdev->kobj, &rdev_ktype);
size = rdev->bdev->bd_inode->i_size >> BLOCK_SIZE_BITS;
size = i_size_read(rdev->bdev->bd_inode) >> BLOCK_SIZE_BITS;
if (!size) {
printk(KERN_WARNING
"md: %s has zero or unknown size, marking faulty!\n",
......@@ -5235,7 +5235,7 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info)
if (!mddev->persistent) {
printk(KERN_INFO "md: nonpersistent superblock ...\n");
rdev->sb_start = rdev->bdev->bd_inode->i_size / 512;
rdev->sb_start = i_size_read(rdev->bdev->bd_inode) / 512;
} else
rdev->sb_start = calc_dev_sboffset(rdev->bdev);
rdev->sectors = rdev->sb_start;
......@@ -5306,7 +5306,7 @@ static int hot_add_disk(mddev_t * mddev, dev_t dev)
if (mddev->persistent)
rdev->sb_start = calc_dev_sboffset(rdev->bdev);
else
rdev->sb_start = rdev->bdev->bd_inode->i_size / 512;
rdev->sb_start = i_size_read(rdev->bdev->bd_inode) / 512;
rdev->sectors = rdev->sb_start;
......
......@@ -320,17 +320,9 @@ static int scsi_check_sense(struct scsi_cmnd *scmd)
"changed. The Linux SCSI layer does not "
"automatically adjust these parameters.\n");
if (scmd->request->cmd_flags & REQ_HARDBARRIER)
/*
* barrier requests should always retry on UA
* otherwise block will get a spurious error
*/
return NEEDS_RETRY;
else
/*
* for normal (non barrier) commands, pass the
* UA upwards for a determination in the
* completion functions
* Pass the UA upwards for a determination in the completion
* functions.
*/
return SUCCESS;
......
......@@ -331,9 +331,6 @@ static struct urb *uas_alloc_cmd_urb(struct uas_dev_info *devinfo, gfp_t gfp,
iu->iu_id = IU_ID_COMMAND;
iu->tag = cpu_to_be16(stream_id);
if (sdev->ordered_tags && (cmnd->request->cmd_flags & REQ_HARDBARRIER))
iu->prio_attr = UAS_ORDERED_TAG;
else
iu->prio_attr = UAS_SIMPLE_TAG;
iu->len = len;
int_to_scsilun(sdev->lun, &iu->lun);
......
......@@ -370,6 +370,9 @@ struct bio *bio_kmalloc(gfp_t gfp_mask, int nr_iovecs)
{
struct bio *bio;
if (nr_iovecs > UIO_MAXIOV)
return NULL;
bio = kmalloc(sizeof(struct bio) + nr_iovecs * sizeof(struct bio_vec),
gfp_mask);
if (unlikely(!bio))
......@@ -697,8 +700,12 @@ static void bio_free_map_data(struct bio_map_data *bmd)
static struct bio_map_data *bio_alloc_map_data(int nr_segs, int iov_count,
gfp_t gfp_mask)
{
struct bio_map_data *bmd = kmalloc(sizeof(*bmd), gfp_mask);
struct bio_map_data *bmd;
if (iov_count > UIO_MAXIOV)
return NULL;
bmd = kmalloc(sizeof(*bmd), gfp_mask);
if (!bmd)
return NULL;
......@@ -827,6 +834,12 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
end = (uaddr + iov[i].iov_len + PAGE_SIZE - 1) >> PAGE_SHIFT;
start = uaddr >> PAGE_SHIFT;
/*
* Overflow, abort
*/
if (end < start)
return ERR_PTR(-EINVAL);
nr_pages += end - start;
len += iov[i].iov_len;
}
......@@ -955,6 +968,12 @@ static struct bio *__bio_map_user_iov(struct request_queue *q,
unsigned long end = (uaddr + len + PAGE_SIZE - 1) >> PAGE_SHIFT;
unsigned long start = uaddr >> PAGE_SHIFT;
/*
* Overflow, abort
*/
if (end < start)
return ERR_PTR(-EINVAL);
nr_pages += end - start;
/*
* buffer must be aligned to at least hardsector size for now
......
......@@ -111,12 +111,14 @@ SYSCALL_DEFINE3(ioprio_set, int, which, int, who, int, ioprio)
read_lock(&tasklist_lock);
switch (which) {
case IOPRIO_WHO_PROCESS:
rcu_read_lock();
if (!who)
p = current;
else
p = find_task_by_vpid(who);
if (p)
ret = set_task_ioprio(p, ioprio);
rcu_read_unlock();
break;
case IOPRIO_WHO_PGRP:
if (!who)
......@@ -139,7 +141,12 @@ SYSCALL_DEFINE3(ioprio_set, int, which, int, who, int, ioprio)
break;
do_each_thread(g, p) {
if (__task_cred(p)->uid != who)
int match;
rcu_read_lock();
match = __task_cred(p)->uid == who;
rcu_read_unlock();
if (!match)
continue;
ret = set_task_ioprio(p, ioprio);
if (ret)
......@@ -200,12 +207,14 @@ SYSCALL_DEFINE2(ioprio_get, int, which, int, who)
read_lock(&tasklist_lock);
switch (which) {
case IOPRIO_WHO_PROCESS:
rcu_read_lock();
if (!who)
p = current;
else
p = find_task_by_vpid(who);
if (p)
ret = get_task_ioprio(p);
rcu_read_unlock();
break;
case IOPRIO_WHO_PGRP:
if (!who)
......@@ -232,7 +241,12 @@ SYSCALL_DEFINE2(ioprio_get, int, which, int, who)
break;
do_each_thread(g, p) {
if (__task_cred(p)->uid != user->uid)
int match;
rcu_read_lock();
match = __task_cred(p)->uid == user->uid;
rcu_read_unlock();
if (!match)
continue;
tmpio = get_task_ioprio(p);
if (tmpio < 0)
......
......@@ -66,10 +66,6 @@
#define bio_offset(bio) bio_iovec((bio))->bv_offset
#define bio_segments(bio) ((bio)->bi_vcnt - (bio)->bi_idx)
#define bio_sectors(bio) ((bio)->bi_size >> 9)
#define bio_empty_barrier(bio) \
((bio->bi_rw & REQ_HARDBARRIER) && \
!bio_has_data(bio) && \
!(bio->bi_rw & REQ_DISCARD))
static inline unsigned int bio_cur_bytes(struct bio *bio)
{
......
......@@ -122,7 +122,6 @@ enum rq_flag_bits {
__REQ_FAILFAST_TRANSPORT, /* no driver retries of transport errors */
__REQ_FAILFAST_DRIVER, /* no driver retries of driver errors */
__REQ_HARDBARRIER, /* may not be passed by drive either */
__REQ_SYNC, /* request is sync (sync write or read) */
__REQ_META, /* metadata io request */
__REQ_DISCARD, /* request to discard sectors */
......@@ -159,7 +158,6 @@ enum rq_flag_bits {
#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_HARDBARRIER (1 << __REQ_HARDBARRIER)
#define REQ_SYNC (1 << __REQ_SYNC)
#define REQ_META (1 << __REQ_META)
#define REQ_DISCARD (1 << __REQ_DISCARD)
......@@ -168,8 +166,8 @@ enum rq_flag_bits {
#define REQ_FAILFAST_MASK \
(REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)
#define REQ_COMMON_MASK \
(REQ_WRITE | REQ_FAILFAST_MASK | REQ_HARDBARRIER | REQ_SYNC | \
REQ_META | REQ_DISCARD | REQ_NOIDLE | REQ_FLUSH | REQ_FUA)
(REQ_WRITE | REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_DISCARD | \
REQ_NOIDLE | REQ_FLUSH | REQ_FUA)
#define REQ_CLONE_MASK REQ_COMMON_MASK
#define REQ_UNPLUG (1 << __REQ_UNPLUG)
......
......@@ -552,8 +552,7 @@ static inline void blk_clear_queue_full(struct request_queue *q, int sync)
* it already be started by driver.
*/
#define RQ_NOMERGE_FLAGS \
(REQ_NOMERGE | REQ_STARTED | REQ_HARDBARRIER | REQ_SOFTBARRIER | \
REQ_FLUSH | REQ_FUA)
(REQ_NOMERGE | REQ_STARTED | REQ_SOFTBARRIER | REQ_FLUSH | REQ_FUA)
#define rq_mergeable(rq) \
(!((rq)->cmd_flags & RQ_NOMERGE_FLAGS) && \
(((rq)->cmd_flags & REQ_DISCARD) || \
......
......@@ -53,7 +53,7 @@
extern const char *drbd_buildtag(void);
#define REL_VERSION "8.3.9rc2"
#define REL_VERSION "8.3.9"
#define API_VERSION 88
#define PRO_VERSION_MIN 86
#define PRO_VERSION_MAX 95
......
......@@ -76,7 +76,6 @@ int put_io_context(struct io_context *ioc);
void exit_io_context(struct task_struct *task);
struct io_context *get_io_context(gfp_t gfp_flags, int node);
struct io_context *alloc_io_context(gfp_t gfp_flags, int node);
void copy_io_context(struct io_context **pdst, struct io_context **psrc);
#else
static inline void exit_io_context(struct task_struct *task)
{
......
......@@ -168,7 +168,6 @@ static int act_log_check(struct blk_trace *bt, u32 what, sector_t sector,
static const u32 ddir_act[2] = { BLK_TC_ACT(BLK_TC_READ),
BLK_TC_ACT(BLK_TC_WRITE) };
#define BLK_TC_HARDBARRIER BLK_TC_BARRIER
#define BLK_TC_RAHEAD BLK_TC_AHEAD
/* The ilog2() calls fall out because they're constant */
......@@ -196,7 +195,6 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
return;
what |= ddir_act[rw & WRITE];
what |= MASK_TC_BIT(rw, HARDBARRIER);
what |= MASK_TC_BIT(rw, SYNC);
what |= MASK_TC_BIT(rw, RAHEAD);
what |= MASK_TC_BIT(rw, META);
......@@ -1807,8 +1805,6 @@ void blk_fill_rwbs(char *rwbs, u32 rw, int bytes)
if (rw & REQ_RAHEAD)
rwbs[i++] = 'A';
if (rw & REQ_HARDBARRIER)
rwbs[i++] = 'B';
if (rw & REQ_SYNC)
rwbs[i++] = 'S';
if (rw & REQ_META)
......
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