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authorLinus Torvalds <torvalds@linux-foundation.org>2009-10-04 15:39:14 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-10-04 15:39:14 -0400
commit58e57fbd1c7e8833314459555e337364fe5521f3 (patch)
tree242a3859387588889c9dcc45915b0dec951f84c3 /fs
parent8a0382f6fceaf0c6479e582e1054f36333ea3d24 (diff)
parent0f78ab9899e9d6acb09d5465def618704255963b (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: (41 commits) Revert "Seperate read and write statistics of in_flight requests" cfq-iosched: don't delay async queue if it hasn't dispatched at all block: Topology ioctls cfq-iosched: use assigned slice sync value, not default cfq-iosched: rename 'desktop' sysfs entry to 'low_latency' cfq-iosched: implement slower async initiate and queue ramp up cfq-iosched: delay async IO dispatch, if sync IO was just done cfq-iosched: add a knob for desktop interactiveness Add a tracepoint for block request remapping block: allow large discard requests block: use normal I/O path for discard requests swapfile: avoid NULL pointer dereference in swapon when s_bdev is NULL fs/bio.c: move EXPORT* macros to line after function Add missing blk_trace_remove_sysfs to be in pair with blk_trace_init_sysfs cciss: fix build when !PROC_FS block: Do not clamp max_hw_sectors for stacking devices block: Set max_sectors correctly for stacking devices cciss: cciss_host_attr_groups should be const cciss: Dynamically allocate the drive_info_struct for each logical drive. cciss: Add usage_count attribute to each logical drive in /sys ...
Diffstat (limited to 'fs')
-rw-r--r--fs/bio.c49
-rw-r--r--fs/partitions/check.c12
2 files changed, 24 insertions, 37 deletions
diff --git a/fs/bio.c b/fs/bio.c
index 76738005c8e8..402cb84a92a1 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -249,6 +249,7 @@ void bio_free(struct bio *bio, struct bio_set *bs)
249 249
250 mempool_free(p, bs->bio_pool); 250 mempool_free(p, bs->bio_pool);
251} 251}
252EXPORT_SYMBOL(bio_free);
252 253
253void bio_init(struct bio *bio) 254void bio_init(struct bio *bio)
254{ 255{
@@ -257,6 +258,7 @@ void bio_init(struct bio *bio)
257 bio->bi_comp_cpu = -1; 258 bio->bi_comp_cpu = -1;
258 atomic_set(&bio->bi_cnt, 1); 259 atomic_set(&bio->bi_cnt, 1);
259} 260}
261EXPORT_SYMBOL(bio_init);
260 262
261/** 263/**
262 * bio_alloc_bioset - allocate a bio for I/O 264 * bio_alloc_bioset - allocate a bio for I/O
@@ -311,6 +313,7 @@ err_free:
311 mempool_free(p, bs->bio_pool); 313 mempool_free(p, bs->bio_pool);
312 return NULL; 314 return NULL;
313} 315}
316EXPORT_SYMBOL(bio_alloc_bioset);
314 317
315static void bio_fs_destructor(struct bio *bio) 318static void bio_fs_destructor(struct bio *bio)
316{ 319{
@@ -337,6 +340,7 @@ struct bio *bio_alloc(gfp_t gfp_mask, int nr_iovecs)
337 340
338 return bio; 341 return bio;
339} 342}
343EXPORT_SYMBOL(bio_alloc);
340 344
341static void bio_kmalloc_destructor(struct bio *bio) 345static void bio_kmalloc_destructor(struct bio *bio)
342{ 346{
@@ -380,6 +384,7 @@ struct bio *bio_kmalloc(gfp_t gfp_mask, int nr_iovecs)
380 384
381 return bio; 385 return bio;
382} 386}
387EXPORT_SYMBOL(bio_kmalloc);
383 388
384void zero_fill_bio(struct bio *bio) 389void zero_fill_bio(struct bio *bio)
385{ 390{
@@ -416,6 +421,7 @@ void bio_put(struct bio *bio)
416 bio->bi_destructor(bio); 421 bio->bi_destructor(bio);
417 } 422 }
418} 423}
424EXPORT_SYMBOL(bio_put);
419 425
420inline int bio_phys_segments(struct request_queue *q, struct bio *bio) 426inline int bio_phys_segments(struct request_queue *q, struct bio *bio)
421{ 427{
@@ -424,6 +430,7 @@ inline int bio_phys_segments(struct request_queue *q, struct bio *bio)
424 430
425 return bio->bi_phys_segments; 431 return bio->bi_phys_segments;
426} 432}
433EXPORT_SYMBOL(bio_phys_segments);
427 434
428/** 435/**
429 * __bio_clone - clone a bio 436 * __bio_clone - clone a bio
@@ -451,6 +458,7 @@ void __bio_clone(struct bio *bio, struct bio *bio_src)
451 bio->bi_size = bio_src->bi_size; 458 bio->bi_size = bio_src->bi_size;
452 bio->bi_idx = bio_src->bi_idx; 459 bio->bi_idx = bio_src->bi_idx;
453} 460}
461EXPORT_SYMBOL(__bio_clone);
454 462
455/** 463/**
456 * bio_clone - clone a bio 464 * bio_clone - clone a bio
@@ -482,6 +490,7 @@ struct bio *bio_clone(struct bio *bio, gfp_t gfp_mask)
482 490
483 return b; 491 return b;
484} 492}
493EXPORT_SYMBOL(bio_clone);
485 494
486/** 495/**
487 * bio_get_nr_vecs - return approx number of vecs 496 * bio_get_nr_vecs - return approx number of vecs
@@ -505,6 +514,7 @@ int bio_get_nr_vecs(struct block_device *bdev)
505 514
506 return nr_pages; 515 return nr_pages;
507} 516}
517EXPORT_SYMBOL(bio_get_nr_vecs);
508 518
509static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page 519static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page
510 *page, unsigned int len, unsigned int offset, 520 *page, unsigned int len, unsigned int offset,
@@ -635,6 +645,7 @@ int bio_add_pc_page(struct request_queue *q, struct bio *bio, struct page *page,
635 return __bio_add_page(q, bio, page, len, offset, 645 return __bio_add_page(q, bio, page, len, offset,
636 queue_max_hw_sectors(q)); 646 queue_max_hw_sectors(q));
637} 647}
648EXPORT_SYMBOL(bio_add_pc_page);
638 649
639/** 650/**
640 * bio_add_page - attempt to add page to bio 651 * bio_add_page - attempt to add page to bio
@@ -655,6 +666,7 @@ int bio_add_page(struct bio *bio, struct page *page, unsigned int len,
655 struct request_queue *q = bdev_get_queue(bio->bi_bdev); 666 struct request_queue *q = bdev_get_queue(bio->bi_bdev);
656 return __bio_add_page(q, bio, page, len, offset, queue_max_sectors(q)); 667 return __bio_add_page(q, bio, page, len, offset, queue_max_sectors(q));
657} 668}
669EXPORT_SYMBOL(bio_add_page);
658 670
659struct bio_map_data { 671struct bio_map_data {
660 struct bio_vec *iovecs; 672 struct bio_vec *iovecs;
@@ -776,6 +788,7 @@ int bio_uncopy_user(struct bio *bio)
776 bio_put(bio); 788 bio_put(bio);
777 return ret; 789 return ret;
778} 790}
791EXPORT_SYMBOL(bio_uncopy_user);
779 792
780/** 793/**
781 * bio_copy_user_iov - copy user data to bio 794 * bio_copy_user_iov - copy user data to bio
@@ -920,6 +933,7 @@ struct bio *bio_copy_user(struct request_queue *q, struct rq_map_data *map_data,
920 933
921 return bio_copy_user_iov(q, map_data, &iov, 1, write_to_vm, gfp_mask); 934 return bio_copy_user_iov(q, map_data, &iov, 1, write_to_vm, gfp_mask);
922} 935}
936EXPORT_SYMBOL(bio_copy_user);
923 937
924static struct bio *__bio_map_user_iov(struct request_queue *q, 938static struct bio *__bio_map_user_iov(struct request_queue *q,
925 struct block_device *bdev, 939 struct block_device *bdev,
@@ -1050,6 +1064,7 @@ struct bio *bio_map_user(struct request_queue *q, struct block_device *bdev,
1050 1064
1051 return bio_map_user_iov(q, bdev, &iov, 1, write_to_vm, gfp_mask); 1065 return bio_map_user_iov(q, bdev, &iov, 1, write_to_vm, gfp_mask);
1052} 1066}
1067EXPORT_SYMBOL(bio_map_user);
1053 1068
1054/** 1069/**
1055 * bio_map_user_iov - map user sg_iovec table into bio 1070 * bio_map_user_iov - map user sg_iovec table into bio
@@ -1117,13 +1132,13 @@ void bio_unmap_user(struct bio *bio)
1117 __bio_unmap_user(bio); 1132 __bio_unmap_user(bio);
1118 bio_put(bio); 1133 bio_put(bio);
1119} 1134}
1135EXPORT_SYMBOL(bio_unmap_user);
1120 1136
1121static void bio_map_kern_endio(struct bio *bio, int err) 1137static void bio_map_kern_endio(struct bio *bio, int err)
1122{ 1138{
1123 bio_put(bio); 1139 bio_put(bio);
1124} 1140}
1125 1141
1126
1127static struct bio *__bio_map_kern(struct request_queue *q, void *data, 1142static struct bio *__bio_map_kern(struct request_queue *q, void *data,
1128 unsigned int len, gfp_t gfp_mask) 1143 unsigned int len, gfp_t gfp_mask)
1129{ 1144{
@@ -1189,6 +1204,7 @@ struct bio *bio_map_kern(struct request_queue *q, void *data, unsigned int len,
1189 bio_put(bio); 1204 bio_put(bio);
1190 return ERR_PTR(-EINVAL); 1205 return ERR_PTR(-EINVAL);
1191} 1206}
1207EXPORT_SYMBOL(bio_map_kern);
1192 1208
1193static void bio_copy_kern_endio(struct bio *bio, int err) 1209static void bio_copy_kern_endio(struct bio *bio, int err)
1194{ 1210{
@@ -1250,6 +1266,7 @@ struct bio *bio_copy_kern(struct request_queue *q, void *data, unsigned int len,
1250 1266
1251 return bio; 1267 return bio;
1252} 1268}
1269EXPORT_SYMBOL(bio_copy_kern);
1253 1270
1254/* 1271/*
1255 * bio_set_pages_dirty() and bio_check_pages_dirty() are support functions 1272 * bio_set_pages_dirty() and bio_check_pages_dirty() are support functions
@@ -1400,6 +1417,7 @@ void bio_endio(struct bio *bio, int error)
1400 if (bio->bi_end_io) 1417 if (bio->bi_end_io)
1401 bio->bi_end_io(bio, error); 1418 bio->bi_end_io(bio, error);
1402} 1419}
1420EXPORT_SYMBOL(bio_endio);
1403 1421
1404void bio_pair_release(struct bio_pair *bp) 1422void bio_pair_release(struct bio_pair *bp)
1405{ 1423{
@@ -1410,6 +1428,7 @@ void bio_pair_release(struct bio_pair *bp)
1410 mempool_free(bp, bp->bio2.bi_private); 1428 mempool_free(bp, bp->bio2.bi_private);
1411 } 1429 }
1412} 1430}
1431EXPORT_SYMBOL(bio_pair_release);
1413 1432
1414static void bio_pair_end_1(struct bio *bi, int err) 1433static void bio_pair_end_1(struct bio *bi, int err)
1415{ 1434{
@@ -1477,6 +1496,7 @@ struct bio_pair *bio_split(struct bio *bi, int first_sectors)
1477 1496
1478 return bp; 1497 return bp;
1479} 1498}
1499EXPORT_SYMBOL(bio_split);
1480 1500
1481/** 1501/**
1482 * bio_sector_offset - Find hardware sector offset in bio 1502 * bio_sector_offset - Find hardware sector offset in bio
@@ -1547,6 +1567,7 @@ void bioset_free(struct bio_set *bs)
1547 1567
1548 kfree(bs); 1568 kfree(bs);
1549} 1569}
1570EXPORT_SYMBOL(bioset_free);
1550 1571
1551/** 1572/**
1552 * bioset_create - Create a bio_set 1573 * bioset_create - Create a bio_set
@@ -1592,6 +1613,7 @@ bad:
1592 bioset_free(bs); 1613 bioset_free(bs);
1593 return NULL; 1614 return NULL;
1594} 1615}
1616EXPORT_SYMBOL(bioset_create);
1595 1617
1596static void __init biovec_init_slabs(void) 1618static void __init biovec_init_slabs(void)
1597{ 1619{
@@ -1636,29 +1658,4 @@ static int __init init_bio(void)
1636 1658
1637 return 0; 1659 return 0;
1638} 1660}
1639
1640subsys_initcall(init_bio); 1661subsys_initcall(init_bio);
1641
1642EXPORT_SYMBOL(bio_alloc);
1643EXPORT_SYMBOL(bio_kmalloc);
1644EXPORT_SYMBOL(bio_put);
1645EXPORT_SYMBOL(bio_free);
1646EXPORT_SYMBOL(bio_endio);
1647EXPORT_SYMBOL(bio_init);
1648EXPORT_SYMBOL(__bio_clone);
1649EXPORT_SYMBOL(bio_clone);
1650EXPORT_SYMBOL(bio_phys_segments);
1651EXPORT_SYMBOL(bio_add_page);
1652EXPORT_SYMBOL(bio_add_pc_page);
1653EXPORT_SYMBOL(bio_get_nr_vecs);
1654EXPORT_SYMBOL(bio_map_user);
1655EXPORT_SYMBOL(bio_unmap_user);
1656EXPORT_SYMBOL(bio_map_kern);
1657EXPORT_SYMBOL(bio_copy_kern);
1658EXPORT_SYMBOL(bio_pair_release);
1659EXPORT_SYMBOL(bio_split);
1660EXPORT_SYMBOL(bio_copy_user);
1661EXPORT_SYMBOL(bio_uncopy_user);
1662EXPORT_SYMBOL(bioset_create);
1663EXPORT_SYMBOL(bioset_free);
1664EXPORT_SYMBOL(bio_alloc_bioset);
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 7b685e10cbad..f38fee0311a7 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -248,19 +248,11 @@ ssize_t part_stat_show(struct device *dev,
248 part_stat_read(p, merges[WRITE]), 248 part_stat_read(p, merges[WRITE]),
249 (unsigned long long)part_stat_read(p, sectors[WRITE]), 249 (unsigned long long)part_stat_read(p, sectors[WRITE]),
250 jiffies_to_msecs(part_stat_read(p, ticks[WRITE])), 250 jiffies_to_msecs(part_stat_read(p, ticks[WRITE])),
251 part_in_flight(p), 251 p->in_flight,
252 jiffies_to_msecs(part_stat_read(p, io_ticks)), 252 jiffies_to_msecs(part_stat_read(p, io_ticks)),
253 jiffies_to_msecs(part_stat_read(p, time_in_queue))); 253 jiffies_to_msecs(part_stat_read(p, time_in_queue)));
254} 254}
255 255
256ssize_t part_inflight_show(struct device *dev,
257 struct device_attribute *attr, char *buf)
258{
259 struct hd_struct *p = dev_to_part(dev);
260
261 return sprintf(buf, "%8u %8u\n", p->in_flight[0], p->in_flight[1]);
262}
263
264#ifdef CONFIG_FAIL_MAKE_REQUEST 256#ifdef CONFIG_FAIL_MAKE_REQUEST
265ssize_t part_fail_show(struct device *dev, 257ssize_t part_fail_show(struct device *dev,
266 struct device_attribute *attr, char *buf) 258 struct device_attribute *attr, char *buf)
@@ -289,7 +281,6 @@ static DEVICE_ATTR(start, S_IRUGO, part_start_show, NULL);
289static DEVICE_ATTR(size, S_IRUGO, part_size_show, NULL); 281static DEVICE_ATTR(size, S_IRUGO, part_size_show, NULL);
290static DEVICE_ATTR(alignment_offset, S_IRUGO, part_alignment_offset_show, NULL); 282static DEVICE_ATTR(alignment_offset, S_IRUGO, part_alignment_offset_show, NULL);
291static DEVICE_ATTR(stat, S_IRUGO, part_stat_show, NULL); 283static DEVICE_ATTR(stat, S_IRUGO, part_stat_show, NULL);
292static DEVICE_ATTR(inflight, S_IRUGO, part_inflight_show, NULL);
293#ifdef CONFIG_FAIL_MAKE_REQUEST 284#ifdef CONFIG_FAIL_MAKE_REQUEST
294static struct device_attribute dev_attr_fail = 285static struct device_attribute dev_attr_fail =
295 __ATTR(make-it-fail, S_IRUGO|S_IWUSR, part_fail_show, part_fail_store); 286 __ATTR(make-it-fail, S_IRUGO|S_IWUSR, part_fail_show, part_fail_store);
@@ -301,7 +292,6 @@ static struct attribute *part_attrs[] = {
301 &dev_attr_size.attr, 292 &dev_attr_size.attr,
302 &dev_attr_alignment_offset.attr, 293 &dev_attr_alignment_offset.attr,
303 &dev_attr_stat.attr, 294 &dev_attr_stat.attr,
304 &dev_attr_inflight.attr,
305#ifdef CONFIG_FAIL_MAKE_REQUEST 295#ifdef CONFIG_FAIL_MAKE_REQUEST
306 &dev_attr_fail.attr, 296 &dev_attr_fail.attr,
307#endif 297#endif