Merge branch 'for-2.6.30' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.30' of git://git.kernel.dk/linux-2.6-block: Get rid of pdflush_operation() in emergency sync and remount btrfs: get rid of current_is_pdflush() in btrfs_btree_balance_dirty Move the default_backing_dev_info out of readahead.c and into backing-dev.c block: Repeated lines in switching-sched.txt bsg: Remove bogus check against request_queue->max_sectors block: WARN in __blk_put_request() for potential bio leak loop: fix circular locking in loop_clr_fd() loop: support barrier writes bsg: add support for tail queuing cpqarray: enable bus mastering block: genhd.h cleanup patch block: add private bio_set for bio integrity allocations block: genhd.h comment needs updating block: get rid of unused blkdev_free_rq() define block: remove various blk_queue_*() setting functions in blk_init_queue_node() cciss: add BUILD_BUG_ON() for catching bad CommandList_struct alignment block: don't create bio_vec slabs of less than the inline number block: cleanup bio_alloc_bioset()
This commit is contained in:
Linus Torvalds
Коммит
86d9c07017
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|
@ -35,9 +35,3 @@ noop anticipatory deadline [cfq]
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# echo anticipatory > /sys/block/hda/queue/scheduler
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# cat /sys/block/hda/queue/scheduler
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noop [anticipatory] deadline cfq
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Each io queue has a set of io scheduler tunables associated with it. These
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tunables control how the io scheduler works. You can find these entries
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in:
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/sys/block/<device>/queue/iosched
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|
|
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@ -603,13 +603,10 @@ blk_init_queue_node(request_fn_proc *rfn, spinlock_t *lock, int node_id)
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q->queue_flags = QUEUE_FLAG_DEFAULT;
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q->queue_lock = lock;
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blk_queue_segment_boundary(q, BLK_SEG_BOUNDARY_MASK);
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/*
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* This also sets hw/phys segments, boundary and size
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*/
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blk_queue_make_request(q, __make_request);
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blk_queue_max_segment_size(q, MAX_SEGMENT_SIZE);
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blk_queue_max_hw_segments(q, MAX_HW_SEGMENTS);
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blk_queue_max_phys_segments(q, MAX_PHYS_SEGMENTS);
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q->sg_reserved_size = INT_MAX;
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@ -735,7 +732,6 @@ static void freed_request(struct request_queue *q, int rw, int priv)
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__freed_request(q, rw ^ 1);
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}
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#define blkdev_free_rq(list) list_entry((list)->next, struct request, queuelist)
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/*
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* Get a free request, queue_lock must be held.
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* Returns NULL on failure, with queue_lock held.
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@ -1066,6 +1062,9 @@ void __blk_put_request(struct request_queue *q, struct request *req)
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elv_completed_request(q, req);
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/* this is a bio leak */
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WARN_ON(req->bio != NULL);
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/*
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* Request may not have originated from ll_rw_blk. if not,
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* it didn't come out of our reserved rq pools
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@ -403,6 +403,8 @@ static int attempt_merge(struct request_queue *q, struct request *req,
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if (blk_rq_cpu_valid(next))
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req->cpu = next->cpu;
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/* owner-ship of bio passed from next to req */
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next->bio = NULL;
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__blk_put_request(q, next);
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return 1;
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}
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|
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12
block/bsg.c
12
block/bsg.c
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@ -218,9 +218,6 @@ bsg_validate_sgv4_hdr(struct request_queue *q, struct sg_io_v4 *hdr, int *rw)
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if (hdr->guard != 'Q')
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return -EINVAL;
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if (hdr->dout_xfer_len > (q->max_sectors << 9) ||
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hdr->din_xfer_len > (q->max_sectors << 9))
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return -EIO;
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switch (hdr->protocol) {
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case BSG_PROTOCOL_SCSI:
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@ -353,6 +350,8 @@ static void bsg_rq_end_io(struct request *rq, int uptodate)
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static void bsg_add_command(struct bsg_device *bd, struct request_queue *q,
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struct bsg_command *bc, struct request *rq)
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{
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int at_head = (0 == (bc->hdr.flags & BSG_FLAG_Q_AT_TAIL));
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/*
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* add bc command to busy queue and submit rq for io
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*/
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@ -368,7 +367,7 @@ static void bsg_add_command(struct bsg_device *bd, struct request_queue *q,
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dprintk("%s: queueing rq %p, bc %p\n", bd->name, rq, bc);
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rq->end_io_data = bc;
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blk_execute_rq_nowait(q, NULL, rq, 1, bsg_rq_end_io);
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blk_execute_rq_nowait(q, NULL, rq, at_head, bsg_rq_end_io);
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}
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static struct bsg_command *bsg_next_done_cmd(struct bsg_device *bd)
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@ -924,6 +923,7 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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struct request *rq;
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struct bio *bio, *bidi_bio = NULL;
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struct sg_io_v4 hdr;
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int at_head;
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u8 sense[SCSI_SENSE_BUFFERSIZE];
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if (copy_from_user(&hdr, uarg, sizeof(hdr)))
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|
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@ -936,7 +936,9 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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bio = rq->bio;
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if (rq->next_rq)
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bidi_bio = rq->next_rq->bio;
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blk_execute_rq(bd->queue, NULL, rq, 0);
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at_head = (0 == (hdr.flags & BSG_FLAG_Q_AT_TAIL));
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blk_execute_rq(bd->queue, NULL, rq, at_head);
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ret = blk_complete_sgv4_hdr_rq(rq, &hdr, bio, bidi_bio);
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if (copy_to_user(uarg, &hdr, sizeof(hdr)))
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|
|
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|
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@ -214,21 +214,10 @@ static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq,
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return 0;
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}
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/*
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* unmap a request that was previously mapped to this sg_io_hdr. handles
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* both sg and non-sg sg_io_hdr.
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*/
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static int blk_unmap_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr)
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{
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blk_rq_unmap_user(rq->bio);
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blk_put_request(rq);
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return 0;
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}
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static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr,
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struct bio *bio)
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{
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int r, ret = 0;
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int ret = 0;
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/*
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* fill in all the output members
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@ -253,12 +242,10 @@ static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr,
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ret = -EFAULT;
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}
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rq->bio = bio;
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r = blk_unmap_sghdr_rq(rq, hdr);
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if (ret)
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r = ret;
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blk_rq_unmap_user(bio);
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blk_put_request(rq);
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return r;
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return ret;
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}
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static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
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|
|
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|
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@ -3898,6 +3898,13 @@ static struct pci_driver cciss_pci_driver = {
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*/
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static int __init cciss_init(void)
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{
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/*
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* The hardware requires that commands are aligned on a 64-bit
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||||
* boundary. Given that we use pci_alloc_consistent() to allocate an
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* array of them, the size must be a multiple of 8 bytes.
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*/
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BUILD_BUG_ON(sizeof(CommandList_struct) % 8);
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printk(KERN_INFO DRIVER_NAME "\n");
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/* Register for our PCI devices */
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|
|
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|||
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@ -617,6 +617,7 @@ static int cpqarray_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
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int i;
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c->pci_dev = pdev;
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pci_set_master(pdev);
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if (pci_enable_device(pdev)) {
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printk(KERN_ERR "cpqarray: Unable to Enable PCI device\n");
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return -1;
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|
|
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|
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@ -474,10 +474,35 @@ static int do_bio_filebacked(struct loop_device *lo, struct bio *bio)
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int ret;
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pos = ((loff_t) bio->bi_sector << 9) + lo->lo_offset;
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if (bio_rw(bio) == WRITE)
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if (bio_rw(bio) == WRITE) {
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int barrier = bio_barrier(bio);
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struct file *file = lo->lo_backing_file;
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if (barrier) {
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if (unlikely(!file->f_op->fsync)) {
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ret = -EOPNOTSUPP;
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goto out;
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}
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ret = vfs_fsync(file, file->f_path.dentry, 0);
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if (unlikely(ret)) {
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ret = -EIO;
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goto out;
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}
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}
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ret = lo_send(lo, bio, pos);
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else
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if (barrier && !ret) {
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ret = vfs_fsync(file, file->f_path.dentry, 0);
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if (unlikely(ret))
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ret = -EIO;
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}
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} else
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ret = lo_receive(lo, bio, lo->lo_blocksize, pos);
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out:
|
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return ret;
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}
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|
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|
|
@ -826,6 +851,9 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
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lo->lo_queue->queuedata = lo;
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lo->lo_queue->unplug_fn = loop_unplug;
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|
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if (!(lo_flags & LO_FLAGS_READ_ONLY) && file->f_op->fsync)
|
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blk_queue_ordered(lo->lo_queue, QUEUE_ORDERED_DRAIN, NULL);
|
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|
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set_capacity(lo->lo_disk, size);
|
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bd_set_size(bdev, size << 9);
|
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|
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|
|
@ -941,11 +969,18 @@ static int loop_clr_fd(struct loop_device *lo, struct block_device *bdev)
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bd_set_size(bdev, 0);
|
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mapping_set_gfp_mask(filp->f_mapping, gfp);
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lo->lo_state = Lo_unbound;
|
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fput(filp);
|
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/* This is safe: open() is still holding a reference. */
|
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module_put(THIS_MODULE);
|
||||
if (max_part > 0)
|
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ioctl_by_bdev(bdev, BLKRRPART, 0);
|
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mutex_unlock(&lo->lo_ctl_mutex);
|
||||
/*
|
||||
* Need not hold lo_ctl_mutex to fput backing file.
|
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* Calling fput holding lo_ctl_mutex triggers a circular
|
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* lock dependency possibility warning as fput can take
|
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* bd_mutex which is usually taken before lo_ctl_mutex.
|
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*/
|
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fput(filp);
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return 0;
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}
|
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|
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|
|
@ -1163,7 +1198,7 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
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struct loop_device *lo = bdev->bd_disk->private_data;
|
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int err;
|
||||
|
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mutex_lock(&lo->lo_ctl_mutex);
|
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mutex_lock_nested(&lo->lo_ctl_mutex, 1);
|
||||
switch (cmd) {
|
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case LOOP_SET_FD:
|
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err = loop_set_fd(lo, mode, bdev, arg);
|
||||
|
|
@ -1172,7 +1207,10 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
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|||
err = loop_change_fd(lo, bdev, arg);
|
||||
break;
|
||||
case LOOP_CLR_FD:
|
||||
/* loop_clr_fd would have unlocked lo_ctl_mutex on success */
|
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err = loop_clr_fd(lo, bdev);
|
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if (!err)
|
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goto out_unlocked;
|
||||
break;
|
||||
case LOOP_SET_STATUS:
|
||||
err = loop_set_status_old(lo, (struct loop_info __user *) arg);
|
||||
|
|
@ -1190,6 +1228,8 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
|
|||
err = lo->ioctl ? lo->ioctl(lo, cmd, arg) : -EINVAL;
|
||||
}
|
||||
mutex_unlock(&lo->lo_ctl_mutex);
|
||||
|
||||
out_unlocked:
|
||||
return err;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -26,54 +26,10 @@
|
|||
#include <linux/workqueue.h>
|
||||
|
||||
static struct kmem_cache *bio_integrity_slab __read_mostly;
|
||||
static mempool_t *bio_integrity_pool;
|
||||
static struct bio_set *integrity_bio_set;
|
||||
static struct workqueue_struct *kintegrityd_wq;
|
||||
|
||||
/**
|
||||
* bio_integrity_alloc_bioset - Allocate integrity payload and attach it to bio
|
||||
* @bio: bio to attach integrity metadata to
|
||||
* @gfp_mask: Memory allocation mask
|
||||
* @nr_vecs: Number of integrity metadata scatter-gather elements
|
||||
* @bs: bio_set to allocate from
|
||||
*
|
||||
* Description: This function prepares a bio for attaching integrity
|
||||
* metadata. nr_vecs specifies the maximum number of pages containing
|
||||
* integrity metadata that can be attached.
|
||||
*/
|
||||
struct bio_integrity_payload *bio_integrity_alloc_bioset(struct bio *bio,
|
||||
gfp_t gfp_mask,
|
||||
unsigned int nr_vecs,
|
||||
struct bio_set *bs)
|
||||
{
|
||||
struct bio_integrity_payload *bip;
|
||||
struct bio_vec *iv;
|
||||
unsigned long idx;
|
||||
|
||||
BUG_ON(bio == NULL);
|
||||
|
||||
bip = mempool_alloc(bs->bio_integrity_pool, gfp_mask);
|
||||
if (unlikely(bip == NULL)) {
|
||||
printk(KERN_ERR "%s: could not alloc bip\n", __func__);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
memset(bip, 0, sizeof(*bip));
|
||||
|
||||
iv = bvec_alloc_bs(gfp_mask, nr_vecs, &idx, bs);
|
||||
if (unlikely(iv == NULL)) {
|
||||
printk(KERN_ERR "%s: could not alloc bip_vec\n", __func__);
|
||||
mempool_free(bip, bs->bio_integrity_pool);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
bip->bip_pool = idx;
|
||||
bip->bip_vec = iv;
|
||||
bip->bip_bio = bio;
|
||||
bio->bi_integrity = bip;
|
||||
|
||||
return bip;
|
||||
}
|
||||
EXPORT_SYMBOL(bio_integrity_alloc_bioset);
|
||||
|
||||
/**
|
||||
* bio_integrity_alloc - Allocate integrity payload and attach it to bio
|
||||
* @bio: bio to attach integrity metadata to
|
||||
|
|
@ -88,19 +44,44 @@ struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio,
|
|||
gfp_t gfp_mask,
|
||||
unsigned int nr_vecs)
|
||||
{
|
||||
return bio_integrity_alloc_bioset(bio, gfp_mask, nr_vecs, fs_bio_set);
|
||||
struct bio_integrity_payload *bip;
|
||||
struct bio_vec *iv;
|
||||
unsigned long idx;
|
||||
|
||||
BUG_ON(bio == NULL);
|
||||
|
||||
bip = mempool_alloc(bio_integrity_pool, gfp_mask);
|
||||
if (unlikely(bip == NULL)) {
|
||||
printk(KERN_ERR "%s: could not alloc bip\n", __func__);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
memset(bip, 0, sizeof(*bip));
|
||||
|
||||
iv = bvec_alloc_bs(gfp_mask, nr_vecs, &idx, integrity_bio_set);
|
||||
if (unlikely(iv == NULL)) {
|
||||
printk(KERN_ERR "%s: could not alloc bip_vec\n", __func__);
|
||||
mempool_free(bip, bio_integrity_pool);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
bip->bip_pool = idx;
|
||||
bip->bip_vec = iv;
|
||||
bip->bip_bio = bio;
|
||||
bio->bi_integrity = bip;
|
||||
|
||||
return bip;
|
||||
}
|
||||
EXPORT_SYMBOL(bio_integrity_alloc);
|
||||
|
||||
/**
|
||||
* bio_integrity_free - Free bio integrity payload
|
||||
* @bio: bio containing bip to be freed
|
||||
* @bs: bio_set this bio was allocated from
|
||||
*
|
||||
* Description: Used to free the integrity portion of a bio. Usually
|
||||
* called from bio_free().
|
||||
*/
|
||||
void bio_integrity_free(struct bio *bio, struct bio_set *bs)
|
||||
void bio_integrity_free(struct bio *bio)
|
||||
{
|
||||
struct bio_integrity_payload *bip = bio->bi_integrity;
|
||||
|
||||
|
|
@ -111,8 +92,8 @@ void bio_integrity_free(struct bio *bio, struct bio_set *bs)
|
|||
&& bip->bip_buf != NULL)
|
||||
kfree(bip->bip_buf);
|
||||
|
||||
bvec_free_bs(bs, bip->bip_vec, bip->bip_pool);
|
||||
mempool_free(bip, bs->bio_integrity_pool);
|
||||
bvec_free_bs(integrity_bio_set, bip->bip_vec, bip->bip_pool);
|
||||
mempool_free(bip, bio_integrity_pool);
|
||||
|
||||
bio->bi_integrity = NULL;
|
||||
}
|
||||
|
|
@ -686,19 +667,17 @@ EXPORT_SYMBOL(bio_integrity_split);
|
|||
* @bio: New bio
|
||||
* @bio_src: Original bio
|
||||
* @gfp_mask: Memory allocation mask
|
||||
* @bs: bio_set to allocate bip from
|
||||
*
|
||||
* Description: Called to allocate a bip when cloning a bio
|
||||
*/
|
||||
int bio_integrity_clone(struct bio *bio, struct bio *bio_src,
|
||||
gfp_t gfp_mask, struct bio_set *bs)
|
||||
int bio_integrity_clone(struct bio *bio, struct bio *bio_src, gfp_t gfp_mask)
|
||||
{
|
||||
struct bio_integrity_payload *bip_src = bio_src->bi_integrity;
|
||||
struct bio_integrity_payload *bip;
|
||||
|
||||
BUG_ON(bip_src == NULL);
|
||||
|
||||
bip = bio_integrity_alloc_bioset(bio, gfp_mask, bip_src->bip_vcnt, bs);
|
||||
bip = bio_integrity_alloc(bio, gfp_mask, bip_src->bip_vcnt);
|
||||
|
||||
if (bip == NULL)
|
||||
return -EIO;
|
||||
|
|
@ -714,37 +693,25 @@ int bio_integrity_clone(struct bio *bio, struct bio *bio_src,
|
|||
}
|
||||
EXPORT_SYMBOL(bio_integrity_clone);
|
||||
|
||||
int bioset_integrity_create(struct bio_set *bs, int pool_size)
|
||||
{
|
||||
bs->bio_integrity_pool = mempool_create_slab_pool(pool_size,
|
||||
bio_integrity_slab);
|
||||
if (!bs->bio_integrity_pool)
|
||||
return -1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(bioset_integrity_create);
|
||||
|
||||
void bioset_integrity_free(struct bio_set *bs)
|
||||
{
|
||||
if (bs->bio_integrity_pool)
|
||||
mempool_destroy(bs->bio_integrity_pool);
|
||||
}
|
||||
EXPORT_SYMBOL(bioset_integrity_free);
|
||||
|
||||
void __init bio_integrity_init_slab(void)
|
||||
{
|
||||
bio_integrity_slab = KMEM_CACHE(bio_integrity_payload,
|
||||
SLAB_HWCACHE_ALIGN|SLAB_PANIC);
|
||||
}
|
||||
|
||||
static int __init integrity_init(void)
|
||||
static int __init bio_integrity_init(void)
|
||||
{
|
||||
kintegrityd_wq = create_workqueue("kintegrityd");
|
||||
|
||||
if (!kintegrityd_wq)
|
||||
panic("Failed to create kintegrityd\n");
|
||||
|
||||
bio_integrity_slab = KMEM_CACHE(bio_integrity_payload,
|
||||
SLAB_HWCACHE_ALIGN|SLAB_PANIC);
|
||||
|
||||
bio_integrity_pool = mempool_create_slab_pool(BIO_POOL_SIZE,
|
||||
bio_integrity_slab);
|
||||
if (!bio_integrity_pool)
|
||||
panic("bio_integrity: can't allocate bip pool\n");
|
||||
|
||||
integrity_bio_set = bioset_create(BIO_POOL_SIZE, 0);
|
||||
if (!integrity_bio_set)
|
||||
panic("bio_integrity: can't allocate bio_set\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
subsys_initcall(integrity_init);
|
||||
subsys_initcall(bio_integrity_init);
|
||||
|
|
|
|||
89
fs/bio.c
89
fs/bio.c
|
|
@ -248,7 +248,7 @@ void bio_free(struct bio *bio, struct bio_set *bs)
|
|||
bvec_free_bs(bs, bio->bi_io_vec, BIO_POOL_IDX(bio));
|
||||
|
||||
if (bio_integrity(bio))
|
||||
bio_integrity_free(bio, bs);
|
||||
bio_integrity_free(bio);
|
||||
|
||||
/*
|
||||
* If we have front padding, adjust the bio pointer before freeing
|
||||
|
|
@ -301,48 +301,51 @@ void bio_init(struct bio *bio)
|
|||
**/
|
||||
struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
|
||||
{
|
||||
struct bio_vec *bvl = NULL;
|
||||
struct bio *bio = NULL;
|
||||
void *uninitialized_var(p);
|
||||
unsigned long idx = 0;
|
||||
void *p = NULL;
|
||||
|
||||
if (bs) {
|
||||
p = mempool_alloc(bs->bio_pool, gfp_mask);
|
||||
|
||||
if (p)
|
||||
bio = p + bs->front_pad;
|
||||
} else
|
||||
if (!p)
|
||||
goto err;
|
||||
bio = p + bs->front_pad;
|
||||
} else {
|
||||
bio = kmalloc(sizeof(*bio), gfp_mask);
|
||||
|
||||
if (likely(bio)) {
|
||||
struct bio_vec *bvl = NULL;
|
||||
|
||||
bio_init(bio);
|
||||
if (likely(nr_iovecs)) {
|
||||
unsigned long uninitialized_var(idx);
|
||||
|
||||
if (nr_iovecs <= BIO_INLINE_VECS) {
|
||||
idx = 0;
|
||||
bvl = bio->bi_inline_vecs;
|
||||
nr_iovecs = BIO_INLINE_VECS;
|
||||
} else {
|
||||
bvl = bvec_alloc_bs(gfp_mask, nr_iovecs, &idx,
|
||||
bs);
|
||||
nr_iovecs = bvec_nr_vecs(idx);
|
||||
}
|
||||
if (unlikely(!bvl)) {
|
||||
if (bs)
|
||||
mempool_free(p, bs->bio_pool);
|
||||
else
|
||||
kfree(bio);
|
||||
bio = NULL;
|
||||
goto out;
|
||||
}
|
||||
bio->bi_flags |= idx << BIO_POOL_OFFSET;
|
||||
bio->bi_max_vecs = nr_iovecs;
|
||||
}
|
||||
bio->bi_io_vec = bvl;
|
||||
if (!bio)
|
||||
goto err;
|
||||
}
|
||||
out:
|
||||
|
||||
bio_init(bio);
|
||||
|
||||
if (unlikely(!nr_iovecs))
|
||||
goto out_set;
|
||||
|
||||
if (nr_iovecs <= BIO_INLINE_VECS) {
|
||||
bvl = bio->bi_inline_vecs;
|
||||
nr_iovecs = BIO_INLINE_VECS;
|
||||
} else {
|
||||
bvl = bvec_alloc_bs(gfp_mask, nr_iovecs, &idx, bs);
|
||||
if (unlikely(!bvl))
|
||||
goto err_free;
|
||||
|
||||
nr_iovecs = bvec_nr_vecs(idx);
|
||||
}
|
||||
bio->bi_flags |= idx << BIO_POOL_OFFSET;
|
||||
bio->bi_max_vecs = nr_iovecs;
|
||||
out_set:
|
||||
bio->bi_io_vec = bvl;
|
||||
|
||||
return bio;
|
||||
|
||||
err_free:
|
||||
if (bs)
|
||||
mempool_free(p, bs->bio_pool);
|
||||
else
|
||||
kfree(bio);
|
||||
err:
|
||||
return NULL;
|
||||
}
|
||||
|
||||
struct bio *bio_alloc(gfp_t gfp_mask, int nr_iovecs)
|
||||
|
|
@ -463,7 +466,7 @@ struct bio *bio_clone(struct bio *bio, gfp_t gfp_mask)
|
|||
if (bio_integrity(bio)) {
|
||||
int ret;
|
||||
|
||||
ret = bio_integrity_clone(b, bio, gfp_mask, fs_bio_set);
|
||||
ret = bio_integrity_clone(b, bio, gfp_mask);
|
||||
|
||||
if (ret < 0) {
|
||||
bio_put(b);
|
||||
|
|
@ -1526,7 +1529,6 @@ void bioset_free(struct bio_set *bs)
|
|||
if (bs->bio_pool)
|
||||
mempool_destroy(bs->bio_pool);
|
||||
|
||||
bioset_integrity_free(bs);
|
||||
biovec_free_pools(bs);
|
||||
bio_put_slab(bs);
|
||||
|
||||
|
|
@ -1567,9 +1569,6 @@ struct bio_set *bioset_create(unsigned int pool_size, unsigned int front_pad)
|
|||
if (!bs->bio_pool)
|
||||
goto bad;
|
||||
|
||||
if (bioset_integrity_create(bs, pool_size))
|
||||
goto bad;
|
||||
|
||||
if (!biovec_create_pools(bs, pool_size))
|
||||
return bs;
|
||||
|
||||
|
|
@ -1586,6 +1585,13 @@ static void __init biovec_init_slabs(void)
|
|||
int size;
|
||||
struct biovec_slab *bvs = bvec_slabs + i;
|
||||
|
||||
#ifndef CONFIG_BLK_DEV_INTEGRITY
|
||||
if (bvs->nr_vecs <= BIO_INLINE_VECS) {
|
||||
bvs->slab = NULL;
|
||||
continue;
|
||||
}
|
||||
#endif
|
||||
|
||||
size = bvs->nr_vecs * sizeof(struct bio_vec);
|
||||
bvs->slab = kmem_cache_create(bvs->name, size, 0,
|
||||
SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
|
||||
|
|
@ -1600,7 +1606,6 @@ static int __init init_bio(void)
|
|||
if (!bio_slabs)
|
||||
panic("bio: can't allocate bios\n");
|
||||
|
||||
bio_integrity_init_slab();
|
||||
biovec_init_slabs();
|
||||
|
||||
fs_bio_set = bioset_create(BIO_POOL_SIZE, 0);
|
||||
|
|
|
|||
|
|
@ -2385,7 +2385,7 @@ void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)
|
|||
unsigned long thresh = 32 * 1024 * 1024;
|
||||
tree = &BTRFS_I(root->fs_info->btree_inode)->io_tree;
|
||||
|
||||
if (current_is_pdflush() || current->flags & PF_MEMALLOC)
|
||||
if (current->flags & PF_MEMALLOC)
|
||||
return;
|
||||
|
||||
num_dirty = count_range_bits(tree, &start, (u64)-1,
|
||||
|
|
|
|||
11
fs/super.c
11
fs/super.c
|
|
@ -674,7 +674,7 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void do_emergency_remount(unsigned long foo)
|
||||
static void do_emergency_remount(struct work_struct *work)
|
||||
{
|
||||
struct super_block *sb;
|
||||
|
||||
|
|
@ -697,12 +697,19 @@ static void do_emergency_remount(unsigned long foo)
|
|||
spin_lock(&sb_lock);
|
||||
}
|
||||
spin_unlock(&sb_lock);
|
||||
kfree(work);
|
||||
printk("Emergency Remount complete\n");
|
||||
}
|
||||
|
||||
void emergency_remount(void)
|
||||
{
|
||||
pdflush_operation(do_emergency_remount, 0);
|
||||
struct work_struct *work;
|
||||
|
||||
work = kmalloc(sizeof(*work), GFP_ATOMIC);
|
||||
if (work) {
|
||||
INIT_WORK(work, do_emergency_remount);
|
||||
schedule_work(work);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
14
fs/sync.c
14
fs/sync.c
|
|
@ -42,9 +42,21 @@ SYSCALL_DEFINE0(sync)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void do_sync_work(struct work_struct *work)
|
||||
{
|
||||
do_sync(0);
|
||||
kfree(work);
|
||||
}
|
||||
|
||||
void emergency_sync(void)
|
||||
{
|
||||
pdflush_operation(do_sync, 0);
|
||||
struct work_struct *work;
|
||||
|
||||
work = kmalloc(sizeof(*work), GFP_ATOMIC);
|
||||
if (work) {
|
||||
INIT_WORK(work, do_sync_work);
|
||||
schedule_work(work);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
|
|
@ -426,9 +426,6 @@ struct bio_set {
|
|||
unsigned int front_pad;
|
||||
|
||||
mempool_t *bio_pool;
|
||||
#if defined(CONFIG_BLK_DEV_INTEGRITY)
|
||||
mempool_t *bio_integrity_pool;
|
||||
#endif
|
||||
mempool_t *bvec_pool;
|
||||
};
|
||||
|
||||
|
|
@ -519,9 +516,8 @@ static inline int bio_has_data(struct bio *bio)
|
|||
|
||||
#define bio_integrity(bio) (bio->bi_integrity != NULL)
|
||||
|
||||
extern struct bio_integrity_payload *bio_integrity_alloc_bioset(struct bio *, gfp_t, unsigned int, struct bio_set *);
|
||||
extern struct bio_integrity_payload *bio_integrity_alloc(struct bio *, gfp_t, unsigned int);
|
||||
extern void bio_integrity_free(struct bio *, struct bio_set *);
|
||||
extern void bio_integrity_free(struct bio *);
|
||||
extern int bio_integrity_add_page(struct bio *, struct page *, unsigned int, unsigned int);
|
||||
extern int bio_integrity_enabled(struct bio *bio);
|
||||
extern int bio_integrity_set_tag(struct bio *, void *, unsigned int);
|
||||
|
|
@ -531,27 +527,21 @@ extern void bio_integrity_endio(struct bio *, int);
|
|||
extern void bio_integrity_advance(struct bio *, unsigned int);
|
||||
extern void bio_integrity_trim(struct bio *, unsigned int, unsigned int);
|
||||
extern void bio_integrity_split(struct bio *, struct bio_pair *, int);
|
||||
extern int bio_integrity_clone(struct bio *, struct bio *, gfp_t, struct bio_set *);
|
||||
extern int bioset_integrity_create(struct bio_set *, int);
|
||||
extern void bioset_integrity_free(struct bio_set *);
|
||||
extern void bio_integrity_init_slab(void);
|
||||
extern int bio_integrity_clone(struct bio *, struct bio *, gfp_t);
|
||||
|
||||
#else /* CONFIG_BLK_DEV_INTEGRITY */
|
||||
|
||||
#define bio_integrity(a) (0)
|
||||
#define bioset_integrity_create(a, b) (0)
|
||||
#define bio_integrity_prep(a) (0)
|
||||
#define bio_integrity_enabled(a) (0)
|
||||
#define bio_integrity_clone(a, b, c,d ) (0)
|
||||
#define bioset_integrity_free(a) do { } while (0)
|
||||
#define bio_integrity_free(a, b) do { } while (0)
|
||||
#define bio_integrity_clone(a, b, c) (0)
|
||||
#define bio_integrity_free(a) do { } while (0)
|
||||
#define bio_integrity_endio(a, b) do { } while (0)
|
||||
#define bio_integrity_advance(a, b) do { } while (0)
|
||||
#define bio_integrity_trim(a, b, c) do { } while (0)
|
||||
#define bio_integrity_split(a, b, c) do { } while (0)
|
||||
#define bio_integrity_set_tag(a, b, c) do { } while (0)
|
||||
#define bio_integrity_get_tag(a, b, c) do { } while (0)
|
||||
#define bio_integrity_init_slab(a) do { } while (0)
|
||||
|
||||
#endif /* CONFIG_BLK_DEV_INTEGRITY */
|
||||
|
||||
|
|
|
|||
|
|
@ -7,6 +7,14 @@
|
|||
#define BSG_SUB_PROTOCOL_SCSI_TMF 1
|
||||
#define BSG_SUB_PROTOCOL_SCSI_TRANSPORT 2
|
||||
|
||||
/*
|
||||
* For flags member below
|
||||
* sg.h sg_io_hdr also has bits defined for it's flags member. However
|
||||
* none of these bits are implemented/used by bsg. The bits below are
|
||||
* allocated to not conflict with sg.h ones anyway.
|
||||
*/
|
||||
#define BSG_FLAG_Q_AT_TAIL 0x10 /* default, == 0 at this bit, is Q_AT_HEAD */
|
||||
|
||||
struct sg_io_v4 {
|
||||
__s32 guard; /* [i] 'Q' to differentiate from v3 */
|
||||
__u32 protocol; /* [i] 0 -> SCSI , .... */
|
||||
|
|
|
|||
|
|
@ -333,11 +333,10 @@ static inline void part_dec_in_flight(struct hd_struct *part)
|
|||
part_to_disk(part)->part0.in_flight--;
|
||||
}
|
||||
|
||||
/* drivers/block/ll_rw_blk.c */
|
||||
/* block/blk-core.c */
|
||||
extern void part_round_stats(int cpu, struct hd_struct *part);
|
||||
|
||||
/* drivers/block/genhd.c */
|
||||
extern int get_blkdev_list(char *, int);
|
||||
/* block/genhd.c */
|
||||
extern void add_disk(struct gendisk *disk);
|
||||
extern void del_gendisk(struct gendisk *gp);
|
||||
extern void unlink_gendisk(struct gendisk *gp);
|
||||
|
|
|
|||
|
|
@ -2,11 +2,24 @@
|
|||
#include <linux/wait.h>
|
||||
#include <linux/backing-dev.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/pagemap.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/writeback.h>
|
||||
#include <linux/device.h>
|
||||
|
||||
void default_unplug_io_fn(struct backing_dev_info *bdi, struct page *page)
|
||||
{
|
||||
}
|
||||
EXPORT_SYMBOL(default_unplug_io_fn);
|
||||
|
||||
struct backing_dev_info default_backing_dev_info = {
|
||||
.ra_pages = VM_MAX_READAHEAD * 1024 / PAGE_CACHE_SIZE,
|
||||
.state = 0,
|
||||
.capabilities = BDI_CAP_MAP_COPY,
|
||||
.unplug_io_fn = default_unplug_io_fn,
|
||||
};
|
||||
EXPORT_SYMBOL_GPL(default_backing_dev_info);
|
||||
|
||||
static struct class *bdi_class;
|
||||
|
||||
|
|
@ -166,9 +179,20 @@ static __init int bdi_class_init(void)
|
|||
bdi_debug_init();
|
||||
return 0;
|
||||
}
|
||||
|
||||
postcore_initcall(bdi_class_init);
|
||||
|
||||
static int __init default_bdi_init(void)
|
||||
{
|
||||
int err;
|
||||
|
||||
err = bdi_init(&default_backing_dev_info);
|
||||
if (!err)
|
||||
bdi_register(&default_backing_dev_info, NULL, "default");
|
||||
|
||||
return err;
|
||||
}
|
||||
subsys_initcall(default_bdi_init);
|
||||
|
||||
int bdi_register(struct backing_dev_info *bdi, struct device *parent,
|
||||
const char *fmt, ...)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -17,19 +17,6 @@
|
|||
#include <linux/pagevec.h>
|
||||
#include <linux/pagemap.h>
|
||||
|
||||
void default_unplug_io_fn(struct backing_dev_info *bdi, struct page *page)
|
||||
{
|
||||
}
|
||||
EXPORT_SYMBOL(default_unplug_io_fn);
|
||||
|
||||
struct backing_dev_info default_backing_dev_info = {
|
||||
.ra_pages = VM_MAX_READAHEAD * 1024 / PAGE_CACHE_SIZE,
|
||||
.state = 0,
|
||||
.capabilities = BDI_CAP_MAP_COPY,
|
||||
.unplug_io_fn = default_unplug_io_fn,
|
||||
};
|
||||
EXPORT_SYMBOL_GPL(default_backing_dev_info);
|
||||
|
||||
/*
|
||||
* Initialise a struct file's readahead state. Assumes that the caller has
|
||||
* memset *ra to zero.
|
||||
|
|
@ -233,18 +220,6 @@ unsigned long max_sane_readahead(unsigned long nr)
|
|||
+ node_page_state(numa_node_id(), NR_FREE_PAGES)) / 2);
|
||||
}
|
||||
|
||||
static int __init readahead_init(void)
|
||||
{
|
||||
int err;
|
||||
|
||||
err = bdi_init(&default_backing_dev_info);
|
||||
if (!err)
|
||||
bdi_register(&default_backing_dev_info, NULL, "default");
|
||||
|
||||
return err;
|
||||
}
|
||||
subsys_initcall(readahead_init);
|
||||
|
||||
/*
|
||||
* Submit IO for the read-ahead request in file_ra_state.
|
||||
*/
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче