author | Florian Westphal <fw@strlen.de> |
Thu, 09 Apr 2009 12:07:21 +0200 | |
changeset 2 | d1f6d8b6f81c |
parent 0 | aa628870c1d3 |
permissions | -rw-r--r-- |
0
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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/* |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* 2.5 block I/O model |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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* |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* Copyright (C) 2001 Jens Axboe <axboe@suse.de> |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* This program is free software; you can redistribute it and/or modify |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* it under the terms of the GNU General Public License version 2 as |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* published by the Free Software Foundation. |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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Port of Linux 2.6.28 for use with network simulation cradle.
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|
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Port of Linux 2.6.28 for use with network simulation cradle.
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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* GNU General Public License for more details. |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* |
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* You should have received a copy of the GNU General Public Licens |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111- |
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Port of Linux 2.6.28 for use with network simulation cradle.
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*/ |
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#ifndef __LINUX_BIO_H |
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#define __LINUX_BIO_H |
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|
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#include <linux/highmem.h> |
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#include <linux/mempool.h> |
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#include <linux/ioprio.h> |
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|
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#ifdef CONFIG_BLOCK |
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#include <asm/io.h> |
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#define BIO_DEBUG |
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|
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#ifdef BIO_DEBUG |
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#define BIO_BUG_ON BUG_ON |
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#else |
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#define BIO_BUG_ON |
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#endif |
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|
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#define BIO_MAX_PAGES 256 |
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#define BIO_MAX_SIZE (BIO_MAX_PAGES << PAGE_CACHE_SHIFT) |
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#define BIO_MAX_SECTORS (BIO_MAX_SIZE >> 9) |
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|
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/* |
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* was unsigned short, but we might as well be ready for > 64kB I/O pages |
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*/ |
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struct bio_vec { |
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struct page *bv_page; |
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unsigned int bv_len; |
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unsigned int bv_offset; |
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}; |
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|
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struct bio_set; |
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struct bio; |
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struct bio_integrity_payload; |
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typedef void (bio_end_io_t) (struct bio *, int); |
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typedef void (bio_destructor_t) (struct bio *); |
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|
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/* |
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* main unit of I/O for the block layer and lower layers (ie drivers and |
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* stacking drivers) |
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*/ |
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struct bio { |
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sector_t bi_sector; /* device address in 512 byte |
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sectors */ |
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struct bio *bi_next; /* request queue link */ |
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struct block_device *bi_bdev; |
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unsigned long bi_flags; /* status, command, etc */ |
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unsigned long bi_rw; /* bottom bits READ/WRITE, |
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* top bits priority |
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*/ |
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|
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unsigned short bi_vcnt; /* how many bio_vec's */ |
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unsigned short bi_idx; /* current index into bvl_vec */ |
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|
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/* Number of segments in this BIO after |
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* physical address coalescing is performed. |
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*/ |
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unsigned int bi_phys_segments; |
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unsigned int bi_size; /* residual I/O count */ |
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|
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/* |
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* To keep track of the max segment size, we account for the |
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* sizes of the first and last mergeable segments in this bio. |
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*/ |
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unsigned int bi_seg_front_size; |
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unsigned int bi_seg_back_size; |
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unsigned int bi_max_vecs; /* max bvl_vecs we can hold */ |
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unsigned int bi_comp_cpu; /* completion CPU */ |
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atomic_t bi_cnt; /* pin count */ |
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||
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struct bio_vec *bi_io_vec; /* the actual vec list */ |
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bio_end_io_t *bi_end_io; |
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void *bi_private; |
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#if defined(CONFIG_BLK_DEV_INTEGRITY) |
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struct bio_integrity_payload *bi_integrity; /* data integrity */ |
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#endif |
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|
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bio_destructor_t *bi_destructor; /* destructor */ |
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/* |
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* We can inline a number of vecs at the end of the bio, to avoid |
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* double allocations for a small number of bio_vecs. This member |
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* MUST obviously be kept at the very end of the bio. |
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*/ |
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struct bio_vec bi_inline_vecs[0]; |
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0
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}; |
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|
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/* |
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* bio flags |
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*/ |
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#define BIO_UPTODATE 0 /* ok after I/O completion */ |
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#define BIO_RW_BLOCK 1 /* RW_AHEAD set, and read/write would block */ |
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#define BIO_EOF 2 /* out-out-bounds error */ |
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#define BIO_SEG_VALID 3 /* bi_phys_segments valid */ |
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#define BIO_CLONED 4 /* doesn't own data */ |
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#define BIO_BOUNCED 5 /* bio is a bounce bio */ |
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#define BIO_USER_MAPPED 6 /* contains user pages */ |
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#define BIO_EOPNOTSUPP 7 /* not supported */ |
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#define BIO_CPU_AFFINE 8 /* complete bio on same CPU as submitted */ |
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#define BIO_NULL_MAPPED 9 /* contains invalid user pages */ |
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#define BIO_FS_INTEGRITY 10 /* fs owns integrity data, not block layer */ |
2 | 128 |
#define BIO_QUIET 11 /* Make BIO Quiet */ |
0
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#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag))) |
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|
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/* |
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* top 4 bits of bio flags indicate the pool this bio came from |
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*/ |
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#define BIO_POOL_BITS (4) |
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#define BIO_POOL_OFFSET (BITS_PER_LONG - BIO_POOL_BITS) |
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#define BIO_POOL_MASK (1UL << BIO_POOL_OFFSET) |
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#define BIO_POOL_IDX(bio) ((bio)->bi_flags >> BIO_POOL_OFFSET) |
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|
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/* |
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* bio bi_rw flags |
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141 |
* |
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* bit 0 -- data direction |
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* If not set, bio is a read from device. If set, it's a write to device. |
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* bit 1 -- rw-ahead when set |
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* bit 2 -- barrier |
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* Insert a serialization point in the IO queue, forcing previously |
2 | 147 |
* submitted IO to be completed before this one is issued. |
0
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* bit 3 -- synchronous I/O hint: the block layer will unplug immediately |
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* Note that this does NOT indicate that the IO itself is sync, just |
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* that the block layer will not postpone issue of this IO by plugging. |
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* bit 4 -- metadata request |
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* Used for tracing to differentiate metadata and data IO. May also |
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* get some preferential treatment in the IO scheduler |
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* bit 5 -- discard sectors |
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* Informs the lower level device that this range of sectors is no longer |
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* used by the file system and may thus be freed by the device. Used |
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* for flash based storage. |
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* bit 6 -- fail fast device errors |
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* bit 7 -- fail fast transport errors |
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* bit 8 -- fail fast driver errors |
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* Don't want driver retries for any fast fail whatever the reason. |
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162 |
*/ |
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#define BIO_RW 0 /* Must match RW in req flags (blkdev.h) */ |
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#define BIO_RW_AHEAD 1 /* Must match FAILFAST in req flags */ |
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#define BIO_RW_BARRIER 2 |
2 | 166 |
#define BIO_RW_SYNCIO 3 |
167 |
#define BIO_RW_UNPLUG 4 |
|
168 |
#define BIO_RW_META 5 |
|
169 |
#define BIO_RW_DISCARD 6 |
|
170 |
#define BIO_RW_FAILFAST_DEV 7 |
|
171 |
#define BIO_RW_FAILFAST_TRANSPORT 8 |
|
172 |
#define BIO_RW_FAILFAST_DRIVER 9 |
|
173 |
||
174 |
#define bio_rw_flagged(bio, flag) ((bio)->bi_rw & (1 << (flag))) |
|
175 |
||
176 |
/* |
|
177 |
* Old defines, these should eventually be replaced by direct usage of |
|
178 |
* bio_rw_flagged() |
|
179 |
*/ |
|
180 |
#define bio_barrier(bio) bio_rw_flagged(bio, BIO_RW_BARRIER) |
|
181 |
#define bio_sync(bio) bio_rw_flagged(bio, BIO_RW_SYNCIO) |
|
182 |
#define bio_unplug(bio) bio_rw_flagged(bio, BIO_RW_UNPLUG) |
|
183 |
#define bio_failfast_dev(bio) bio_rw_flagged(bio, BIO_RW_FAILFAST_DEV) |
|
184 |
#define bio_failfast_transport(bio) \ |
|
185 |
bio_rw_flagged(bio, BIO_RW_FAILFAST_TRANSPORT) |
|
186 |
#define bio_failfast_driver(bio) \ |
|
187 |
bio_rw_flagged(bio, BIO_RW_FAILFAST_DRIVER) |
|
188 |
#define bio_rw_ahead(bio) bio_rw_flagged(bio, BIO_RW_AHEAD) |
|
189 |
#define bio_rw_meta(bio) bio_rw_flagged(bio, BIO_RW_META) |
|
190 |
#define bio_discard(bio) bio_rw_flagged(bio, BIO_RW_DISCARD) |
|
0
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191 |
|
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192 |
/* |
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* upper 16 bits of bi_rw define the io priority of this bio |
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194 |
*/ |
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195 |
#define BIO_PRIO_SHIFT (8 * sizeof(unsigned long) - IOPRIO_BITS) |
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196 |
#define bio_prio(bio) ((bio)->bi_rw >> BIO_PRIO_SHIFT) |
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#define bio_prio_valid(bio) ioprio_valid(bio_prio(bio)) |
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198 |
|
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199 |
#define bio_set_prio(bio, prio) do { \ |
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WARN_ON(prio >= (1 << IOPRIO_BITS)); \ |
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201 |
(bio)->bi_rw &= ((1UL << BIO_PRIO_SHIFT) - 1); \ |
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202 |
(bio)->bi_rw |= ((unsigned long) (prio) << BIO_PRIO_SHIFT); \ |
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203 |
} while (0) |
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204 |
|
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205 |
/* |
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206 |
* various member access, note that bio_data should of course not be used |
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207 |
* on highmem page vectors |
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208 |
*/ |
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209 |
#define bio_iovec_idx(bio, idx) (&((bio)->bi_io_vec[(idx)])) |
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#define bio_iovec(bio) bio_iovec_idx((bio), (bio)->bi_idx) |
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#define bio_page(bio) bio_iovec((bio))->bv_page |
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212 |
#define bio_offset(bio) bio_iovec((bio))->bv_offset |
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213 |
#define bio_segments(bio) ((bio)->bi_vcnt - (bio)->bi_idx) |
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#define bio_sectors(bio) ((bio)->bi_size >> 9) |
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#define bio_empty_barrier(bio) (bio_barrier(bio) && !bio_has_data(bio) && !bio_discard(bio)) |
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216 |
|
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217 |
static inline unsigned int bio_cur_sectors(struct bio *bio) |
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218 |
{ |
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219 |
if (bio->bi_vcnt) |
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220 |
return bio_iovec(bio)->bv_len >> 9; |
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221 |
else /* dataless requests such as discard */ |
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222 |
return bio->bi_size >> 9; |
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|
223 |
} |
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224 |
|
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225 |
static inline void *bio_data(struct bio *bio) |
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226 |
{ |
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227 |
if (bio->bi_vcnt) |
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228 |
return page_address(bio_page(bio)) + bio_offset(bio); |
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229 |
|
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230 |
return NULL; |
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231 |
} |
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|
232 |
|
2 | 233 |
static inline int bio_has_allocated_vec(struct bio *bio) |
234 |
{ |
|
235 |
return bio->bi_io_vec && bio->bi_io_vec != bio->bi_inline_vecs; |
|
236 |
} |
|
237 |
||
0
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|
238 |
/* |
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239 |
* will die |
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240 |
*/ |
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241 |
#define bio_to_phys(bio) (page_to_phys(bio_page((bio))) + (unsigned long) bio_offset((bio))) |
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242 |
#define bvec_to_phys(bv) (page_to_phys((bv)->bv_page) + (unsigned long) (bv)->bv_offset) |
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243 |
|
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244 |
/* |
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245 |
* queues that have highmem support enabled may still need to revert to |
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246 |
* PIO transfers occasionally and thus map high pages temporarily. For |
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247 |
* permanent PIO fall back, user is probably better off disabling highmem |
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248 |
* I/O completely on that queue (see ide-dma for example) |
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249 |
*/ |
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|
250 |
#define __bio_kmap_atomic(bio, idx, kmtype) \ |
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|
251 |
(kmap_atomic(bio_iovec_idx((bio), (idx))->bv_page, kmtype) + \ |
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|
252 |
bio_iovec_idx((bio), (idx))->bv_offset) |
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|
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#define __bio_kunmap_atomic(addr, kmtype) kunmap_atomic(addr, kmtype) |
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|
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/* |
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* merge helpers etc |
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*/ |
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|
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#define __BVEC_END(bio) bio_iovec_idx((bio), (bio)->bi_vcnt - 1) |
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#define __BVEC_START(bio) bio_iovec_idx((bio), (bio)->bi_idx) |
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|
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/* Default implementation of BIOVEC_PHYS_MERGEABLE */ |
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#define __BIOVEC_PHYS_MERGEABLE(vec1, vec2) \ |
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((bvec_to_phys((vec1)) + (vec1)->bv_len) == bvec_to_phys((vec2))) |
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|
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/* |
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* allow arch override, for eg virtualized architectures (put in asm/io.h) |
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*/ |
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#ifndef BIOVEC_PHYS_MERGEABLE |
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#define BIOVEC_PHYS_MERGEABLE(vec1, vec2) \ |
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__BIOVEC_PHYS_MERGEABLE(vec1, vec2) |
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#endif |
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|
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#define __BIO_SEG_BOUNDARY(addr1, addr2, mask) \ |
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(((addr1) | (mask)) == (((addr2) - 1) | (mask))) |
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#define BIOVEC_SEG_BOUNDARY(q, b1, b2) \ |
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__BIO_SEG_BOUNDARY(bvec_to_phys((b1)), bvec_to_phys((b2)) + (b2)->bv_len, (q)->seg_boundary_mask) |
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#define BIO_SEG_BOUNDARY(q, b1, b2) \ |
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BIOVEC_SEG_BOUNDARY((q), __BVEC_END((b1)), __BVEC_START((b2))) |
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|
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#define bio_io_error(bio) bio_endio((bio), -EIO) |
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|
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/* |
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* drivers should not use the __ version unless they _really_ want to |
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* run through the entire bio and not just pending pieces |
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*/ |
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#define __bio_for_each_segment(bvl, bio, i, start_idx) \ |
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for (bvl = bio_iovec_idx((bio), (start_idx)), i = (start_idx); \ |
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i < (bio)->bi_vcnt; \ |
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bvl++, i++) |
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|
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#define bio_for_each_segment(bvl, bio, i) \ |
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__bio_for_each_segment(bvl, bio, i, (bio)->bi_idx) |
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|
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/* |
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297 |
* get a reference to a bio, so it won't disappear. the intended use is |
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* something like: |
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* |
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* bio_get(bio); |
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* submit_bio(rw, bio); |
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* if (bio->bi_flags ...) |
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* do_something |
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* bio_put(bio); |
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* |
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* without the bio_get(), it could potentially complete I/O before submit_bio |
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* returns. and then bio would be freed memory when if (bio->bi_flags ...) |
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* runs |
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*/ |
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#define bio_get(bio) atomic_inc(&(bio)->bi_cnt) |
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|
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#if defined(CONFIG_BLK_DEV_INTEGRITY) |
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/* |
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* bio integrity payload |
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315 |
*/ |
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struct bio_integrity_payload { |
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struct bio *bip_bio; /* parent bio */ |
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struct bio_vec *bip_vec; /* integrity data vector */ |
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319 |
|
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320 |
sector_t bip_sector; /* virtual start sector */ |
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321 |
|
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void *bip_buf; /* generated integrity data */ |
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bio_end_io_t *bip_end_io; /* saved I/O completion fn */ |
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324 |
|
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unsigned int bip_size; |
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326 |
|
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unsigned short bip_pool; /* pool the ivec came from */ |
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unsigned short bip_vcnt; /* # of integrity bio_vecs */ |
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unsigned short bip_idx; /* current bip_vec index */ |
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|
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struct work_struct bip_work; /* I/O completion */ |
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332 |
}; |
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333 |
#endif /* CONFIG_BLK_DEV_INTEGRITY */ |
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334 |
|
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335 |
/* |
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336 |
* A bio_pair is used when we need to split a bio. |
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337 |
* This can only happen for a bio that refers to just one |
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|
338 |
* page of data, and in the unusual situation when the |
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339 |
* page crosses a chunk/device boundary |
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340 |
* |
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341 |
* The address of the master bio is stored in bio1.bi_private |
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342 |
* The address of the pool the pair was allocated from is stored |
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* in bio2.bi_private |
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344 |
*/ |
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345 |
struct bio_pair { |
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346 |
struct bio bio1, bio2; |
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347 |
struct bio_vec bv1, bv2; |
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#if defined(CONFIG_BLK_DEV_INTEGRITY) |
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349 |
struct bio_integrity_payload bip1, bip2; |
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struct bio_vec iv1, iv2; |
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351 |
#endif |
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352 |
atomic_t cnt; |
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353 |
int error; |
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354 |
}; |
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355 |
extern struct bio_pair *bio_split(struct bio *bi, int first_sectors); |
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356 |
extern void bio_pair_release(struct bio_pair *dbio); |
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357 |
|
2 | 358 |
extern struct bio_set *bioset_create(unsigned int, unsigned int); |
0
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359 |
extern void bioset_free(struct bio_set *); |
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360 |
|
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361 |
extern struct bio *bio_alloc(gfp_t, int); |
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362 |
extern struct bio *bio_kmalloc(gfp_t, int); |
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|
363 |
extern struct bio *bio_alloc_bioset(gfp_t, int, struct bio_set *); |
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|
364 |
extern void bio_put(struct bio *); |
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Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
365 |
extern void bio_free(struct bio *, struct bio_set *); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
366 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
367 |
extern void bio_endio(struct bio *, int); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
368 |
struct request_queue; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
369 |
extern int bio_phys_segments(struct request_queue *, struct bio *); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
diff
changeset
|
370 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
371 |
extern void __bio_clone(struct bio *, struct bio *); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
372 |
extern struct bio *bio_clone(struct bio *, gfp_t); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
diff
changeset
|
373 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
374 |
extern void bio_init(struct bio *); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
375 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
376 |
extern int bio_add_page(struct bio *, struct page *, unsigned int,unsigned int); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
377 |
extern int bio_add_pc_page(struct request_queue *, struct bio *, struct page *, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
378 |
unsigned int, unsigned int); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
379 |
extern int bio_get_nr_vecs(struct block_device *); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
380 |
extern sector_t bio_sector_offset(struct bio *, unsigned short, unsigned int); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
381 |
extern struct bio *bio_map_user(struct request_queue *, struct block_device *, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
382 |
unsigned long, unsigned int, int, gfp_t); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
383 |
struct sg_iovec; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
384 |
struct rq_map_data; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
385 |
extern struct bio *bio_map_user_iov(struct request_queue *, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
386 |
struct block_device *, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
387 |
struct sg_iovec *, int, int, gfp_t); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
388 |
extern void bio_unmap_user(struct bio *); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
389 |
extern struct bio *bio_map_kern(struct request_queue *, void *, unsigned int, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
390 |
gfp_t); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
391 |
extern struct bio *bio_copy_kern(struct request_queue *, void *, unsigned int, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
392 |
gfp_t, int); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
393 |
extern void bio_set_pages_dirty(struct bio *bio); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
394 |
extern void bio_check_pages_dirty(struct bio *bio); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
395 |
extern struct bio *bio_copy_user(struct request_queue *, struct rq_map_data *, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
396 |
unsigned long, unsigned int, int, gfp_t); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
397 |
extern struct bio *bio_copy_user_iov(struct request_queue *, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
398 |
struct rq_map_data *, struct sg_iovec *, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
399 |
int, int, gfp_t); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
400 |
extern int bio_uncopy_user(struct bio *); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
401 |
void zero_fill_bio(struct bio *bio); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
402 |
extern struct bio_vec *bvec_alloc_bs(gfp_t, int, unsigned long *, struct bio_set *); |
2 | 403 |
extern void bvec_free_bs(struct bio_set *, struct bio_vec *, unsigned int); |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
404 |
extern unsigned int bvec_nr_vecs(unsigned short idx); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
405 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
406 |
/* |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
407 |
* Allow queuer to specify a completion CPU for this bio |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
408 |
*/ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
409 |
static inline void bio_set_completion_cpu(struct bio *bio, unsigned int cpu) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
410 |
{ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
411 |
bio->bi_comp_cpu = cpu; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
412 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
413 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
414 |
/* |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
415 |
* bio_set is used to allow other portions of the IO system to |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
416 |
* allocate their own private memory pools for bio and iovec structures. |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
417 |
* These memory pools in turn all allocate from the bio_slab |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
418 |
* and the bvec_slabs[]. |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
419 |
*/ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
420 |
#define BIO_POOL_SIZE 2 |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
421 |
#define BIOVEC_NR_POOLS 6 |
2 | 422 |
#define BIOVEC_MAX_IDX (BIOVEC_NR_POOLS - 1) |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
423 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
424 |
struct bio_set { |
2 | 425 |
struct kmem_cache *bio_slab; |
426 |
unsigned int front_pad; |
|
427 |
||
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
428 |
mempool_t *bio_pool; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
429 |
#if defined(CONFIG_BLK_DEV_INTEGRITY) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
430 |
mempool_t *bio_integrity_pool; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
431 |
#endif |
2 | 432 |
mempool_t *bvec_pool; |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
433 |
}; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
434 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
435 |
struct biovec_slab { |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
436 |
int nr_vecs; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
437 |
char *name; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
438 |
struct kmem_cache *slab; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
439 |
}; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
440 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
441 |
extern struct bio_set *fs_bio_set; |
2 | 442 |
extern struct biovec_slab bvec_slabs[BIOVEC_NR_POOLS] __read_mostly; |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
443 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
444 |
/* |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
445 |
* a small number of entries is fine, not going to be performance critical. |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
446 |
* basically we just need to survive |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
447 |
*/ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
448 |
#define BIO_SPLIT_ENTRIES 2 |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
449 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
450 |
#ifdef CONFIG_HIGHMEM |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
451 |
/* |
2 | 452 |
* remember never ever reenable interrupts between a bvec_kmap_irq and |
453 |
* bvec_kunmap_irq! |
|
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
454 |
* |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
455 |
* This function MUST be inlined - it plays with the CPU interrupt flags. |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
456 |
*/ |
2 | 457 |
static __always_inline char *bvec_kmap_irq(struct bio_vec *bvec, |
458 |
unsigned long *flags) |
|
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
459 |
{ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
460 |
unsigned long addr; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
461 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
462 |
/* |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
463 |
* might not be a highmem page, but the preempt/irq count |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
464 |
* balancing is a lot nicer this way |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
465 |
*/ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
466 |
local_irq_save(*flags); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
467 |
addr = (unsigned long) kmap_atomic(bvec->bv_page, KM_BIO_SRC_IRQ); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
468 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
469 |
BUG_ON(addr & ~PAGE_MASK); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
470 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
471 |
return (char *) addr + bvec->bv_offset; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
472 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
473 |
|
2 | 474 |
static __always_inline void bvec_kunmap_irq(char *buffer, |
475 |
unsigned long *flags) |
|
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
476 |
{ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
477 |
unsigned long ptr = (unsigned long) buffer & PAGE_MASK; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
478 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
479 |
kunmap_atomic((void *) ptr, KM_BIO_SRC_IRQ); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
480 |
local_irq_restore(*flags); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
481 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
482 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
483 |
#else |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
484 |
#define bvec_kmap_irq(bvec, flags) (page_address((bvec)->bv_page) + (bvec)->bv_offset) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
485 |
#define bvec_kunmap_irq(buf, flags) do { *(flags) = 0; } while (0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
486 |
#endif |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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changeset
|
487 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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488 |
static inline char *__bio_kmap_irq(struct bio *bio, unsigned short idx, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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|
489 |
unsigned long *flags) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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|
490 |
{ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
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|
491 |
return bvec_kmap_irq(bio_iovec_idx(bio, idx), flags); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
492 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
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|
493 |
#define __bio_kunmap_irq(buf, flags) bvec_kunmap_irq(buf, flags) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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|
494 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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changeset
|
495 |
#define bio_kmap_irq(bio, flags) \ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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changeset
|
496 |
__bio_kmap_irq((bio), (bio)->bi_idx, (flags)) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
497 |
#define bio_kunmap_irq(buf,flags) __bio_kunmap_irq(buf, flags) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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changeset
|
498 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
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499 |
/* |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
500 |
* Check whether this bio carries any data or not. A NULL bio is allowed. |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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changeset
|
501 |
*/ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
502 |
static inline int bio_has_data(struct bio *bio) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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changeset
|
503 |
{ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
504 |
return bio && bio->bi_io_vec != NULL; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
505 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
506 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
507 |
#if defined(CONFIG_BLK_DEV_INTEGRITY) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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changeset
|
508 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
509 |
#define bip_vec_idx(bip, idx) (&(bip->bip_vec[(idx)])) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
510 |
#define bip_vec(bip) bip_vec_idx(bip, 0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
511 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
512 |
#define __bip_for_each_vec(bvl, bip, i, start_idx) \ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
513 |
for (bvl = bip_vec_idx((bip), (start_idx)), i = (start_idx); \ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
514 |
i < (bip)->bip_vcnt; \ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
515 |
bvl++, i++) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
516 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
517 |
#define bip_for_each_vec(bvl, bip, i) \ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
518 |
__bip_for_each_vec(bvl, bip, i, (bip)->bip_idx) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
519 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
520 |
#define bio_integrity(bio) (bio->bi_integrity != NULL) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
521 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
522 |
extern struct bio_integrity_payload *bio_integrity_alloc_bioset(struct bio *, gfp_t, unsigned int, struct bio_set *); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
523 |
extern struct bio_integrity_payload *bio_integrity_alloc(struct bio *, gfp_t, unsigned int); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
524 |
extern void bio_integrity_free(struct bio *, struct bio_set *); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
525 |
extern int bio_integrity_add_page(struct bio *, struct page *, unsigned int, unsigned int); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
526 |
extern int bio_integrity_enabled(struct bio *bio); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
527 |
extern int bio_integrity_set_tag(struct bio *, void *, unsigned int); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
528 |
extern int bio_integrity_get_tag(struct bio *, void *, unsigned int); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
529 |
extern int bio_integrity_prep(struct bio *); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
530 |
extern void bio_integrity_endio(struct bio *, int); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
531 |
extern void bio_integrity_advance(struct bio *, unsigned int); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
532 |
extern void bio_integrity_trim(struct bio *, unsigned int, unsigned int); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
533 |
extern void bio_integrity_split(struct bio *, struct bio_pair *, int); |
2 | 534 |
extern int bio_integrity_clone(struct bio *, struct bio *, gfp_t, struct bio_set *); |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
535 |
extern int bioset_integrity_create(struct bio_set *, int); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
536 |
extern void bioset_integrity_free(struct bio_set *); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
537 |
extern void bio_integrity_init_slab(void); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
538 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
539 |
#else /* CONFIG_BLK_DEV_INTEGRITY */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
540 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
541 |
#define bio_integrity(a) (0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
542 |
#define bioset_integrity_create(a, b) (0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
543 |
#define bio_integrity_prep(a) (0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
544 |
#define bio_integrity_enabled(a) (0) |
2 | 545 |
#define bio_integrity_clone(a, b, c,d ) (0) |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
546 |
#define bioset_integrity_free(a) do { } while (0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
547 |
#define bio_integrity_free(a, b) do { } while (0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
548 |
#define bio_integrity_endio(a, b) do { } while (0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
549 |
#define bio_integrity_advance(a, b) do { } while (0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
550 |
#define bio_integrity_trim(a, b, c) do { } while (0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
551 |
#define bio_integrity_split(a, b, c) do { } while (0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
552 |
#define bio_integrity_set_tag(a, b, c) do { } while (0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
553 |
#define bio_integrity_get_tag(a, b, c) do { } while (0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
554 |
#define bio_integrity_init_slab(a) do { } while (0) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
555 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
556 |
#endif /* CONFIG_BLK_DEV_INTEGRITY */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
557 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
558 |
#endif /* CONFIG_BLOCK */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
559 |
#endif /* __LINUX_BIO_H */ |