Messages in this thread Patch in this message | | | From | Thomas Schoebel-Theuer <> | Subject | [PATCH 27/50] mars: add new file include/linux/xio/xio_bio.h | Date | Tue, 1 Jul 2014 23:47:07 +0200 |
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Signed-off-by: Thomas Schoebel-Theuer <tst@schoebel-theuer.de> --- include/linux/xio/xio_bio.h | 69 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 include/linux/xio/xio_bio.h
diff --git a/include/linux/xio/xio_bio.h b/include/linux/xio/xio_bio.h new file mode 100644 index 0000000..73fad4e --- /dev/null +++ b/include/linux/xio/xio_bio.h @@ -0,0 +1,69 @@ +/* (c) 2010 Thomas Schoebel-Theuer / 1&1 Internet AG */ +#ifndef XIO_BIO_H +#define XIO_BIO_H + +#define BIO_SUBMIT_MAX_LATENCY 250 /* 250 us */ +#define BIO_IO_R_MAX_LATENCY 40000 /* 40 ms */ +#define BIO_IO_W_MAX_LATENCY 100000 /* 100 ms */ + +extern struct threshold bio_submit_threshold; +extern struct threshold bio_io_threshold[2]; + +#include <linux/blkdev.h> + +struct bio_aio_aspect { + GENERIC_ASPECT(aio); + struct list_head io_head; + struct bio *bio; + struct bio_output *output; + unsigned long long start_stamp; + int status_code; + int hash_pos; + int alloc_len; + bool do_dealloc; +}; + +struct bio_brick { + XIO_BRICK(bio); + /* tunables */ + int ra_pages; + int bg_threshold; + int bg_maxfly; + bool do_noidle; + bool do_sync; + bool do_unplug; + + /* readonly */ + loff_t total_size; + atomic_t fly_count[XIO_PRIO_NR]; + atomic_t queue_count[XIO_PRIO_NR]; + atomic_t completed_count; + atomic_t total_completed_count[XIO_PRIO_NR]; + + /* private */ + spinlock_t lock; + struct list_head queue_list[XIO_PRIO_NR]; + struct list_head submitted_list[2]; + struct list_head completed_list; + + wait_queue_head_t submit_event; + wait_queue_head_t response_event; + struct mapfree_info *mf; + struct block_device *bdev; + struct task_struct *submit_thread; + struct task_struct *response_thread; + int bvec_max; + bool submitted; +}; + +struct bio_input { + XIO_INPUT(bio); +}; + +struct bio_output { + XIO_OUTPUT(bio); +}; + +XIO_TYPES(bio); + +#endif -- 2.0.0
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