if (percpu_ref_tryget_live(&q->q_usage_counter))
return 0;
- if (!(gfp & __GFP_WAIT))
+ if (!gfpflags_allow_blocking(gfp))
return -EBUSY;
ret = wait_event_interruptible(q->mq_freeze_wq,
}
EXPORT_SYMBOL(blk_init_queue_node);
- static void blk_queue_bio(struct request_queue *q, struct bio *bio);
+ static blk_qc_t blk_queue_bio(struct request_queue *q, struct bio *bio);
struct request_queue *
blk_init_allocated_queue(struct request_queue *q, request_fn_proc *rfn,
* @bio: bio to allocate request for (can be %NULL)
* @gfp_mask: allocation mask
*
- * Get a free request from @q. If %__GFP_WAIT is set in @gfp_mask, this
- * function keeps retrying under memory pressure and fails iff @q is dead.
+ * Get a free request from @q. If %__GFP_DIRECT_RECLAIM is set in @gfp_mask,
+ * this function keeps retrying under memory pressure and fails iff @q is dead.
*
* Must be called with @q->queue_lock held and,
* Returns ERR_PTR on failure, with @q->queue_lock held.
if (!IS_ERR(rq))
return rq;
- if (!(gfp_mask & __GFP_WAIT) || unlikely(blk_queue_dying(q))) {
+ if (!gfpflags_allow_blocking(gfp_mask) || unlikely(blk_queue_dying(q))) {
blk_put_rl(rl);
return rq;
}
* BUG.
*
* WARNING: When allocating/cloning a bio-chain, careful consideration should be
- * given to how you allocate bios. In particular, you cannot use __GFP_WAIT for
- * anything but the first bio in the chain. Otherwise you risk waiting for IO
- * completion of a bio that hasn't been submitted yet, thus resulting in a
- * deadlock. Alternatively bios should be allocated using bio_kmalloc() instead
- * of bio_alloc(), as that avoids the mempool deadlock.
+ * given to how you allocate bios. In particular, you cannot use
+ * __GFP_DIRECT_RECLAIM for anything but the first bio in the chain. Otherwise
+ * you risk waiting for IO completion of a bio that hasn't been submitted yet,
+ * thus resulting in a deadlock. Alternatively bios should be allocated using
+ * bio_kmalloc() instead of bio_alloc(), as that avoids the mempool deadlock.
* If possible a big IO should be split into smaller parts when allocation
* fails. Partial allocation should not be an error, or you risk a live-lock.
*/
blk_rq_bio_prep(req->q, req, bio);
}
- static void blk_queue_bio(struct request_queue *q, struct bio *bio)
+ static blk_qc_t blk_queue_bio(struct request_queue *q, struct bio *bio)
{
const bool sync = !!(bio->bi_rw & REQ_SYNC);
struct blk_plug *plug;
if (bio_integrity_enabled(bio) && bio_integrity_prep(bio)) {
bio->bi_error = -EIO;
bio_endio(bio);
- return;
+ return BLK_QC_T_NONE;
}
if (bio->bi_rw & (REQ_FLUSH | REQ_FUA)) {
*/
if (!blk_queue_nomerges(q)) {
if (blk_attempt_plug_merge(q, bio, &request_count, NULL))
- return;
+ return BLK_QC_T_NONE;
} else
request_count = blk_plug_queued_count(q);
out_unlock:
spin_unlock_irq(q->queue_lock);
}
+
+ return BLK_QC_T_NONE;
}
/*
* a lower device by calling into generic_make_request recursively, which
* means the bio should NOT be touched after the call to ->make_request_fn.
*/
- void generic_make_request(struct bio *bio)
+ blk_qc_t generic_make_request(struct bio *bio)
{
struct bio_list bio_list_on_stack;
+ blk_qc_t ret = BLK_QC_T_NONE;
if (!generic_make_request_checks(bio))
- return;
+ goto out;
/*
* We only want one ->make_request_fn to be active at a time, else
*/
if (current->bio_list) {
bio_list_add(current->bio_list, bio);
- return;
+ goto out;
}
/* following loop may be a bit non-obvious, and so deserves some
do {
struct request_queue *q = bdev_get_queue(bio->bi_bdev);
- if (likely(blk_queue_enter(q, __GFP_WAIT) == 0)) {
+ if (likely(blk_queue_enter(q, __GFP_DIRECT_RECLAIM) == 0)) {
- q->make_request_fn(q, bio);
+ ret = q->make_request_fn(q, bio);
blk_queue_exit(q);
}
} while (bio);
current->bio_list = NULL; /* deactivate */
+
+ out:
+ return ret;
}
EXPORT_SYMBOL(generic_make_request);
* interfaces; @bio must be presetup and ready for I/O.
*
*/
- void submit_bio(int rw, struct bio *bio)
+ blk_qc_t submit_bio(int rw, struct bio *bio)
{
bio->bi_rw |= rw;
}
}
- generic_make_request(bio);
+ return generic_make_request(bio);
}
EXPORT_SYMBOL(submit_bio);
}
EXPORT_SYMBOL(blk_finish_plug);
+ bool blk_poll(struct request_queue *q, blk_qc_t cookie)
+ {
+ struct blk_plug *plug;
+ long state;
+
+ if (!q->mq_ops || !q->mq_ops->poll || !blk_qc_t_valid(cookie) ||
+ !test_bit(QUEUE_FLAG_POLL, &q->queue_flags))
+ return false;
+
+ plug = current->plug;
+ if (plug)
+ blk_flush_plug_list(plug, false);
+
+ state = current->state;
+ while (!need_resched()) {
+ unsigned int queue_num = blk_qc_t_to_queue_num(cookie);
+ struct blk_mq_hw_ctx *hctx = q->queue_hw_ctx[queue_num];
+ int ret;
+
+ hctx->poll_invoked++;
+
+ ret = q->mq_ops->poll(hctx, blk_qc_t_to_tag(cookie));
+ if (ret > 0) {
+ hctx->poll_success++;
+ set_current_state(TASK_RUNNING);
+ return true;
+ }
+
+ if (signal_pending_state(state, current))
+ set_current_state(TASK_RUNNING);
+
+ if (current->state == TASK_RUNNING)
+ return true;
+ if (ret < 0)
+ break;
+ cpu_relax();
+ }
+
+ return false;
+ }
+
#ifdef CONFIG_PM
/**
* blk_pm_runtime_init - Block layer runtime PM initialization routine
ctx = blk_mq_get_ctx(q);
hctx = q->mq_ops->map_queue(q, ctx->cpu);
- blk_mq_set_alloc_data(&alloc_data, q, gfp & ~__GFP_WAIT,
+ blk_mq_set_alloc_data(&alloc_data, q, gfp & ~__GFP_DIRECT_RECLAIM,
reserved, ctx, hctx);
rq = __blk_mq_alloc_request(&alloc_data, rw);
- if (!rq && (gfp & __GFP_WAIT)) {
+ if (!rq && (gfp & __GFP_DIRECT_RECLAIM)) {
__blk_mq_run_hw_queue(hctx);
blk_mq_put_ctx(ctx);
ctx = blk_mq_get_ctx(q);
hctx = q->mq_ops->map_queue(q, ctx->cpu);
blk_mq_set_alloc_data(&alloc_data, q,
- __GFP_WAIT|GFP_ATOMIC, false, ctx, hctx);
+ __GFP_RECLAIM|__GFP_HIGH, false, ctx, hctx);
rq = __blk_mq_alloc_request(&alloc_data, rw);
ctx = alloc_data.ctx;
hctx = alloc_data.hctx;
return rq;
}
- static int blk_mq_direct_issue_request(struct request *rq)
+ static int blk_mq_direct_issue_request(struct request *rq, blk_qc_t *cookie)
{
int ret;
struct request_queue *q = rq->q;
.list = NULL,
.last = 1
};
+ blk_qc_t new_cookie = blk_tag_to_qc_t(rq->tag, hctx->queue_num);
/*
* For OK queue, we are done. For error, kill it. Any other
* would have done
*/
ret = q->mq_ops->queue_rq(hctx, &bd);
- if (ret == BLK_MQ_RQ_QUEUE_OK)
+ if (ret == BLK_MQ_RQ_QUEUE_OK) {
+ *cookie = new_cookie;
return 0;
- else {
- __blk_mq_requeue_request(rq);
+ }
- if (ret == BLK_MQ_RQ_QUEUE_ERROR) {
- rq->errors = -EIO;
- blk_mq_end_request(rq, rq->errors);
- return 0;
- }
- return -1;
+ __blk_mq_requeue_request(rq);
+
+ if (ret == BLK_MQ_RQ_QUEUE_ERROR) {
+ *cookie = BLK_QC_T_NONE;
+ rq->errors = -EIO;
+ blk_mq_end_request(rq, rq->errors);
+ return 0;
}
+
+ return -1;
}
/*
* but will attempt to bypass the hctx queueing if we can go straight to
* hardware for SYNC IO.
*/
- static void blk_mq_make_request(struct request_queue *q, struct bio *bio)
+ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
{
const int is_sync = rw_is_sync(bio->bi_rw);
const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA);
unsigned int request_count = 0;
struct blk_plug *plug;
struct request *same_queue_rq = NULL;
+ blk_qc_t cookie;
blk_queue_bounce(q, &bio);
if (bio_integrity_enabled(bio) && bio_integrity_prep(bio)) {
bio_io_error(bio);
- return;
+ return BLK_QC_T_NONE;
}
blk_queue_split(q, &bio, q->bio_split);
if (!is_flush_fua && !blk_queue_nomerges(q)) {
if (blk_attempt_plug_merge(q, bio, &request_count,
&same_queue_rq))
- return;
+ return BLK_QC_T_NONE;
} else
request_count = blk_plug_queued_count(q);
rq = blk_mq_map_request(q, bio, &data);
if (unlikely(!rq))
- return;
+ return BLK_QC_T_NONE;
+
+ cookie = blk_tag_to_qc_t(rq->tag, data.hctx->queue_num);
if (unlikely(is_flush_fua)) {
blk_mq_bio_to_request(rq, bio);
old_rq = rq;
blk_mq_put_ctx(data.ctx);
if (!old_rq)
- return;
- if (!blk_mq_direct_issue_request(old_rq))
- return;
+ goto done;
+ if (!blk_mq_direct_issue_request(old_rq, &cookie))
+ goto done;
blk_mq_insert_request(old_rq, false, true, true);
- return;
+ goto done;
}
if (!blk_mq_merge_queue_io(data.hctx, data.ctx, rq, bio)) {
blk_mq_run_hw_queue(data.hctx, !is_sync || is_flush_fua);
}
blk_mq_put_ctx(data.ctx);
+ done:
+ return cookie;
}
/*
* Single hardware queue variant. This will attempt to use any per-process
* plug for merging and IO deferral.
*/
- static void blk_sq_make_request(struct request_queue *q, struct bio *bio)
+ static blk_qc_t blk_sq_make_request(struct request_queue *q, struct bio *bio)
{
const int is_sync = rw_is_sync(bio->bi_rw);
const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA);
unsigned int request_count = 0;
struct blk_map_ctx data;
struct request *rq;
+ blk_qc_t cookie;
blk_queue_bounce(q, &bio);
if (bio_integrity_enabled(bio) && bio_integrity_prep(bio)) {
bio_io_error(bio);
- return;
+ return BLK_QC_T_NONE;
}
blk_queue_split(q, &bio, q->bio_split);
if (!is_flush_fua && !blk_queue_nomerges(q) &&
blk_attempt_plug_merge(q, bio, &request_count, NULL))
- return;
+ return BLK_QC_T_NONE;
rq = blk_mq_map_request(q, bio, &data);
if (unlikely(!rq))
- return;
+ return BLK_QC_T_NONE;
+
+ cookie = blk_tag_to_qc_t(rq->tag, data.hctx->queue_num);
if (unlikely(is_flush_fua)) {
blk_mq_bio_to_request(rq, bio);
}
list_add_tail(&rq->queuelist, &plug->mq_list);
blk_mq_put_ctx(data.ctx);
- return;
+ return cookie;
}
if (!blk_mq_merge_queue_io(data.hctx, data.ctx, rq, bio)) {
}
blk_mq_put_ctx(data.ctx);
+ return cookie;
}
/*
int ret = 0;
rq = blk_get_request(q, (cgc->data_direction == CGC_DATA_WRITE) ?
- WRITE : READ, __GFP_WAIT);
+ WRITE : READ, __GFP_RECLAIM);
if (IS_ERR(rq))
return PTR_ERR(rq);
blk_rq_set_block_pc(rq);
if (cgc->buflen) {
ret = blk_rq_map_kern(q, rq, cgc->buffer, cgc->buflen,
- __GFP_WAIT);
+ __GFP_RECLAIM);
if (ret)
goto out;
}
}
}
- static void pkt_make_request(struct request_queue *q, struct bio *bio)
+ static blk_qc_t pkt_make_request(struct request_queue *q, struct bio *bio)
{
struct pktcdvd_device *pd;
char b[BDEVNAME_SIZE];
*/
if (bio_data_dir(bio) == READ) {
pkt_make_request_read(pd, bio);
- return;
+ return BLK_QC_T_NONE;
}
if (!test_bit(PACKET_WRITABLE, &pd->flags)) {
pkt_make_request_write(q, split);
} while (split != bio);
- return;
+ return BLK_QC_T_NONE;
end_io:
bio_io_error(bio);
+ return BLK_QC_T_NONE;
}
-
-
static void pkt_init_queue(struct pktcdvd_device *pd)
{
struct request_queue *q = pd->disk->queue;
out_mem2:
put_disk(disk);
out_mem:
- if (pd->rb_pool)
- mempool_destroy(pd->rb_pool);
+ mempool_destroy(pd->rb_pool);
kfree(pd);
out_mutex:
mutex_unlock(&ctl_mutex);
meta->table[index].value = (flags << ZRAM_FLAG_SHIFT) | size;
}
-static inline int is_partial_io(struct bio_vec *bvec)
+static inline bool is_partial_io(struct bio_vec *bvec)
{
return bvec->bv_len != PAGE_SIZE;
}
/*
* Check if request is within bounds and aligned on zram logical blocks.
*/
-static inline int valid_io_request(struct zram *zram,
+static inline bool valid_io_request(struct zram *zram,
sector_t start, unsigned int size)
{
u64 end, bound;
/* unaligned request */
if (unlikely(start & (ZRAM_SECTOR_PER_LOGICAL_BLOCK - 1)))
- return 0;
+ return false;
if (unlikely(size & (ZRAM_LOGICAL_BLOCK_SIZE - 1)))
- return 0;
+ return false;
end = start + (size >> SECTOR_SHIFT);
bound = zram->disksize >> SECTOR_SHIFT;
/* out of range range */
if (unlikely(start >= bound || end > bound || start > end))
- return 0;
+ return false;
/* I/O request is valid */
- return 1;
+ return true;
}
static void update_position(u32 *index, int *offset, struct bio_vec *bvec)
} while (old_max != cur_max);
}
-static int page_zero_filled(void *ptr)
+static bool page_zero_filled(void *ptr)
{
unsigned int pos;
unsigned long *page;
for (pos = 0; pos != PAGE_SIZE / sizeof(*page); pos++) {
if (page[pos])
- return 0;
+ return false;
}
- return 1;
+ return true;
}
static void handle_zero_page(struct bio_vec *bvec)
struct zram *zram = dev_to_zram(dev);
size_t sz;
+ if (!zcomp_available_algorithm(buf))
+ return -EINVAL;
+
down_write(&zram->init_lock);
if (init_done(zram)) {
up_write(&zram->init_lock);
if (sz > 0 && zram->compressor[sz - 1] == '\n')
zram->compressor[sz - 1] = 0x00;
- if (!zcomp_available_algorithm(zram->compressor))
- len = -EINVAL;
-
up_write(&zram->init_lock);
return len;
}
}
alloced_pages = zs_get_total_pages(meta->mem_pool);
+ update_used_max(zram, alloced_pages);
+
if (zram->limit_pages && alloced_pages > zram->limit_pages) {
zs_free(meta->mem_pool, handle);
ret = -ENOMEM;
goto out;
}
- update_used_max(zram, alloced_pages);
-
cmem = zs_map_object(meta->mem_pool, handle, ZS_MM_WO);
if ((clen == PAGE_SIZE) && !is_partial_io(bvec)) {
/*
* Handler function for all zram I/O requests.
*/
- static void zram_make_request(struct request_queue *queue, struct bio *bio)
+ static blk_qc_t zram_make_request(struct request_queue *queue, struct bio *bio)
{
struct zram *zram = queue->queuedata;
__zram_make_request(zram, bio);
zram_meta_put(zram);
- return;
+ return BLK_QC_T_NONE;
put_zram:
zram_meta_put(zram);
error:
bio_io_error(bio);
+ return BLK_QC_T_NONE;
}
static void zram_slot_free_notify(struct block_device *bdev,
kunmap_atomic(mem);
}
- static void pmem_make_request(struct request_queue *q, struct bio *bio)
+ static blk_qc_t pmem_make_request(struct request_queue *q, struct bio *bio)
{
bool do_acct;
unsigned long start;
wmb_pmem();
bio_endio(bio);
+ return BLK_QC_T_NONE;
}
static int pmem_rw_page(struct block_device *bdev, sector_t sector,
return ERR_PTR(-EBUSY);
}
- if (pmem_should_map_pages(dev)) {
- void *addr = devm_memremap_pages(dev, res);
+ if (pmem_should_map_pages(dev))
+ pmem->virt_addr = (void __pmem *) devm_memremap_pages(dev, res);
+ else
+ pmem->virt_addr = (void __pmem *) devm_memremap(dev,
+ pmem->phys_addr, pmem->size,
+ ARCH_MEMREMAP_PMEM);
- if (IS_ERR(addr))
- return addr;
- pmem->virt_addr = (void __pmem *) addr;
- } else {
- pmem->virt_addr = memremap_pmem(dev, pmem->phys_addr,
- pmem->size);
- if (!pmem->virt_addr)
- return ERR_PTR(-ENXIO);
- }
+ if (IS_ERR(pmem->virt_addr))
+ return (void __force *) pmem->virt_addr;
return pmem;
}
static int pmem_attach_disk(struct device *dev,
struct nd_namespace_common *ndns, struct pmem_device *pmem)
{
+ int nid = dev_to_node(dev);
struct gendisk *disk;
- pmem->pmem_queue = blk_alloc_queue(GFP_KERNEL);
+ pmem->pmem_queue = blk_alloc_queue_node(GFP_KERNEL, nid);
if (!pmem->pmem_queue)
return -ENOMEM;
blk_queue_bounce_limit(pmem->pmem_queue, BLK_BOUNCE_ANY);
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, pmem->pmem_queue);
- disk = alloc_disk(0);
+ disk = alloc_disk_node(0, nid);
if (!disk) {
blk_cleanup_queue(pmem->pmem_queue);
return -ENOMEM;
/* establish pfn range for lookup, and switch to direct map */
pmem = dev_get_drvdata(dev);
- memunmap_pmem(dev, pmem->virt_addr);
- pmem->virt_addr = (void __pmem *)devm_memremap_pages(dev, &nsio->res);
+ devm_memunmap(dev, (void __force *) pmem->virt_addr);
+ pmem->virt_addr = (void __pmem *) devm_memremap_pages(dev, &nsio->res);
if (IS_ERR(pmem->virt_addr)) {
rc = PTR_ERR(pmem->virt_addr);
goto err;
#include <linux/types.h>
#include <linux/pr.h>
#include <scsi/sg.h>
-#include <asm-generic/io-64-nonatomic-lo-hi.h>
+#include <linux/io-64-nonatomic-lo-hi.h>
#include <asm/unaligned.h>
#include <uapi/linux/nvme_ioctl.h>
static int __nvme_reset(struct nvme_dev *dev);
static int nvme_reset(struct nvme_dev *dev);
- static int nvme_process_cq(struct nvme_queue *nvmeq);
+ static void nvme_process_cq(struct nvme_queue *nvmeq);
static void nvme_dead_ctrl(struct nvme_dev *dev);
struct async_cmd_info {
return BLK_MQ_RQ_QUEUE_BUSY;
}
- static int nvme_process_cq(struct nvme_queue *nvmeq)
+ static void __nvme_process_cq(struct nvme_queue *nvmeq, unsigned int *tag)
{
u16 head, phase;
head = 0;
phase = !phase;
}
+ if (tag && *tag == cqe.command_id)
+ *tag = -1;
ctx = nvme_finish_cmd(nvmeq, cqe.command_id, &fn);
fn(nvmeq, ctx, &cqe);
}
* a big problem.
*/
if (head == nvmeq->cq_head && phase == nvmeq->cq_phase)
- return 0;
+ return;
writel(head, nvmeq->q_db + nvmeq->dev->db_stride);
nvmeq->cq_head = head;
nvmeq->cq_phase = phase;
nvmeq->cqe_seen = 1;
- return 1;
+ }
+
+ static void nvme_process_cq(struct nvme_queue *nvmeq)
+ {
+ __nvme_process_cq(nvmeq, NULL);
}
static irqreturn_t nvme_irq(int irq, void *data)
return IRQ_WAKE_THREAD;
}
+ static int nvme_poll(struct blk_mq_hw_ctx *hctx, unsigned int tag)
+ {
+ struct nvme_queue *nvmeq = hctx->driver_data;
+
+ if ((le16_to_cpu(nvmeq->cqes[nvmeq->cq_head].status) & 1) ==
+ nvmeq->cq_phase) {
+ spin_lock_irq(&nvmeq->q_lock);
+ __nvme_process_cq(nvmeq, &tag);
+ spin_unlock_irq(&nvmeq->q_lock);
+
+ if (tag == -1)
+ return 1;
+ }
+
+ return 0;
+ }
+
/*
* Returns 0 on success. If the result is negative, it's a Linux error code;
* if the result is positive, it's an NVM Express status code
req->special = (void *)0;
if (buffer && bufflen) {
- ret = blk_rq_map_kern(q, req, buffer, bufflen, __GFP_WAIT);
+ ret = blk_rq_map_kern(q, req, buffer, bufflen,
+ __GFP_DIRECT_RECLAIM);
if (ret)
goto out;
} else if (ubuffer && bufflen) {
- ret = blk_rq_map_user(q, req, NULL, ubuffer, bufflen, __GFP_WAIT);
+ ret = blk_rq_map_user(q, req, NULL, ubuffer, bufflen,
+ __GFP_DIRECT_RECLAIM);
if (ret)
goto out;
bio = req->bio;
.init_hctx = nvme_init_hctx,
.init_request = nvme_init_request,
.timeout = nvme_timeout,
+ .poll = nvme_poll,
};
static void nvme_dev_remove_admin(struct nvme_dev *dev)
struct dio {
int flags; /* doesn't change */
int rw;
+ blk_qc_t bio_cookie;
+ struct block_device *bio_bdev;
struct inode *inode;
loff_t i_size; /* i_size when submitted */
dio_iodone_t *end_io; /* IO completion function */
/*
* bio_alloc() is guaranteed to return a bio when called with
- * __GFP_WAIT and we request a valid number of vectors.
+ * __GFP_RECLAIM and we request a valid number of vectors.
*/
bio = bio_alloc(GFP_KERNEL, nr_vecs);
if (dio->is_async && dio->rw == READ && dio->should_dirty)
bio_set_pages_dirty(bio);
- if (sdio->submit_io)
+ dio->bio_bdev = bio->bi_bdev;
+
+ if (sdio->submit_io) {
sdio->submit_io(dio->rw, bio, dio->inode,
sdio->logical_offset_in_bio);
- else
- submit_bio(dio->rw, bio);
+ dio->bio_cookie = BLK_QC_T_NONE;
+ } else
+ dio->bio_cookie = submit_bio(dio->rw, bio);
sdio->bio = NULL;
sdio->boundary = 0;
__set_current_state(TASK_UNINTERRUPTIBLE);
dio->waiter = current;
spin_unlock_irqrestore(&dio->bio_lock, flags);
- io_schedule();
+ if (!blk_poll(bdev_get_queue(dio->bio_bdev), dio->bio_cookie))
+ io_schedule();
/* wake up sets us TASK_RUNNING */
spin_lock_irqsave(&dio->bio_lock, flags);
dio->waiter = NULL;
extern void locks_release_private(struct file_lock *);
extern void posix_test_lock(struct file *, struct file_lock *);
extern int posix_lock_file(struct file *, struct file_lock *, struct file_lock *);
-extern int posix_lock_inode_wait(struct inode *, struct file_lock *);
extern int posix_unblock_lock(struct file_lock *);
extern int vfs_test_lock(struct file *, struct file_lock *);
extern int vfs_lock_file(struct file *, unsigned int, struct file_lock *, struct file_lock *);
extern int vfs_cancel_lock(struct file *filp, struct file_lock *fl);
-extern int flock_lock_inode_wait(struct inode *inode, struct file_lock *fl);
+extern int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl);
extern int __break_lease(struct inode *inode, unsigned int flags, unsigned int type);
extern void lease_get_mtime(struct inode *, struct timespec *time);
extern int generic_setlease(struct file *, long, struct file_lock **, void **priv);
return -ENOLCK;
}
-static inline int posix_lock_inode_wait(struct inode *inode,
- struct file_lock *fl)
-{
- return -ENOLCK;
-}
-
static inline int posix_unblock_lock(struct file_lock *waiter)
{
return -ENOENT;
return 0;
}
-static inline int flock_lock_inode_wait(struct inode *inode,
- struct file_lock *request)
+static inline int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl)
{
return -ENOLCK;
}
return f->f_inode;
}
-static inline int posix_lock_file_wait(struct file *filp, struct file_lock *fl)
-{
- return posix_lock_inode_wait(file_inode(filp), fl);
-}
-
-static inline int flock_lock_file_wait(struct file *filp, struct file_lock *fl)
+static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl)
{
- return flock_lock_inode_wait(file_inode(filp), fl);
+ return locks_lock_inode_wait(file_inode(filp), fl);
}
struct fasync_struct {
extern int filemap_fdatawrite(struct address_space *);
extern int filemap_flush(struct address_space *);
extern int filemap_fdatawait(struct address_space *);
+extern void filemap_fdatawait_keep_errors(struct address_space *);
extern int filemap_fdatawait_range(struct address_space *, loff_t lstart,
loff_t lend);
extern int filemap_write_and_wait(struct address_space *mapping);
extern void inode_sb_list_add(struct inode *inode);
#ifdef CONFIG_BLOCK
- extern void submit_bio(int, struct bio *);
+ extern blk_qc_t submit_bio(int, struct bio *);
extern int bdev_read_only(struct block_device *);
#endif
extern int set_blocksize(struct block_device *, int);
projects / linux-2.6-block.git / commitdiff