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authorLinus Torvalds <torvalds@linux-foundation.org>2016-07-26 15:03:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-26 15:03:07 -0700
commitd05d7f40791ccbb6e543cc5dd6a6aa08fc71d635 (patch)
treedc0039fe490a41a70de10d58fe8e6136db46463a /fs/btrfs/extent_io.c
parent75a442efb1ca613f8d1cc71a32c2c9b0aefae4a5 (diff)
parent17007f3994cdb4643355c73f54f0adad006cf59e (diff)
downloadlinux-d05d7f40791ccbb6e543cc5dd6a6aa08fc71d635.tar.bz2
Merge branch 'for-4.8/core' of git://git.kernel.dk/linux-block
Pull core block updates from Jens Axboe: - the big change is the cleanup from Mike Christie, cleaning up our uses of command types and modified flags. This is what will throw some merge conflicts - regression fix for the above for btrfs, from Vincent - following up to the above, better packing of struct request from Christoph - a 2038 fix for blktrace from Arnd - a few trivial/spelling fixes from Bart Van Assche - a front merge check fix from Damien, which could cause issues on SMR drives - Atari partition fix from Gabriel - convert cfq to highres timers, since jiffies isn't granular enough for some devices these days. From Jan and Jeff - CFQ priority boost fix idle classes, from me - cleanup series from Ming, improving our bio/bvec iteration - a direct issue fix for blk-mq from Omar - fix for plug merging not involving the IO scheduler, like we do for other types of merges. From Tahsin - expose DAX type internally and through sysfs. From Toshi and Yigal * 'for-4.8/core' of git://git.kernel.dk/linux-block: (76 commits) block: Fix front merge check block: do not merge requests without consulting with io scheduler block: Fix spelling in a source code comment block: expose QUEUE_FLAG_DAX in sysfs block: add QUEUE_FLAG_DAX for devices to advertise their DAX support Btrfs: fix comparison in __btrfs_map_block() block: atari: Return early for unsupported sector size Doc: block: Fix a typo in queue-sysfs.txt cfq-iosched: Charge at least 1 jiffie instead of 1 ns cfq-iosched: Fix regression in bonnie++ rewrite performance cfq-iosched: Convert slice_resid from u64 to s64 block: Convert fifo_time from ulong to u64 blktrace: avoid using timespec block/blk-cgroup.c: Declare local symbols static block/bio-integrity.c: Add #include "blk.h" block/partition-generic.c: Remove a set-but-not-used variable block: bio: kill BIO_MAX_SIZE cfq-iosched: temporarily boost queue priority for idle classes block: drbd: avoid to use BIO_MAX_SIZE block: bio: remove BIO_MAX_SECTORS ...
Diffstat (limited to 'fs/btrfs/extent_io.c')
-rw-r--r--fs/btrfs/extent_io.c91
1 files changed, 44 insertions, 47 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 75533adef998..27c214941004 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2049,9 +2049,10 @@ int repair_io_failure(struct inode *inode, u64 start, u64 length, u64 logical,
return -EIO;
}
bio->bi_bdev = dev->bdev;
+ bio->bi_rw = WRITE_SYNC;
bio_add_page(bio, page, length, pg_offset);
- if (btrfsic_submit_bio_wait(WRITE_SYNC, bio)) {
+ if (btrfsic_submit_bio_wait(bio)) {
/* try to remap that extent elsewhere? */
btrfs_bio_counter_dec(fs_info);
bio_put(bio);
@@ -2386,7 +2387,7 @@ static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset,
int read_mode;
int ret;
- BUG_ON(failed_bio->bi_rw & REQ_WRITE);
+ BUG_ON(bio_op(failed_bio) == REQ_OP_WRITE);
ret = btrfs_get_io_failure_record(inode, start, end, &failrec);
if (ret)
@@ -2412,12 +2413,12 @@ static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset,
free_io_failure(inode, failrec);
return -EIO;
}
+ bio_set_op_attrs(bio, REQ_OP_READ, read_mode);
pr_debug("Repair Read Error: submitting new read[%#x] to this_mirror=%d, in_validation=%d\n",
read_mode, failrec->this_mirror, failrec->in_validation);
- ret = tree->ops->submit_bio_hook(inode, read_mode, bio,
- failrec->this_mirror,
+ ret = tree->ops->submit_bio_hook(inode, bio, failrec->this_mirror,
failrec->bio_flags, 0);
if (ret) {
free_io_failure(inode, failrec);
@@ -2723,8 +2724,8 @@ struct bio *btrfs_io_bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs)
}
-static int __must_check submit_one_bio(int rw, struct bio *bio,
- int mirror_num, unsigned long bio_flags)
+static int __must_check submit_one_bio(struct bio *bio, int mirror_num,
+ unsigned long bio_flags)
{
int ret = 0;
struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1;
@@ -2735,33 +2736,32 @@ static int __must_check submit_one_bio(int rw, struct bio *bio,
start = page_offset(page) + bvec->bv_offset;
bio->bi_private = NULL;
-
bio_get(bio);
if (tree->ops && tree->ops->submit_bio_hook)
- ret = tree->ops->submit_bio_hook(page->mapping->host, rw, bio,
+ ret = tree->ops->submit_bio_hook(page->mapping->host, bio,
mirror_num, bio_flags, start);
else
- btrfsic_submit_bio(rw, bio);
+ btrfsic_submit_bio(bio);
bio_put(bio);
return ret;
}
-static int merge_bio(int rw, struct extent_io_tree *tree, struct page *page,
+static int merge_bio(struct extent_io_tree *tree, struct page *page,
unsigned long offset, size_t size, struct bio *bio,
unsigned long bio_flags)
{
int ret = 0;
if (tree->ops && tree->ops->merge_bio_hook)
- ret = tree->ops->merge_bio_hook(rw, page, offset, size, bio,
+ ret = tree->ops->merge_bio_hook(page, offset, size, bio,
bio_flags);
BUG_ON(ret < 0);
return ret;
}
-static int submit_extent_page(int rw, struct extent_io_tree *tree,
+static int submit_extent_page(int op, int op_flags, struct extent_io_tree *tree,
struct writeback_control *wbc,
struct page *page, sector_t sector,
size_t size, unsigned long offset,
@@ -2789,10 +2789,9 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree,
if (prev_bio_flags != bio_flags || !contig ||
force_bio_submit ||
- merge_bio(rw, tree, page, offset, page_size, bio, bio_flags) ||
+ merge_bio(tree, page, offset, page_size, bio, bio_flags) ||
bio_add_page(bio, page, page_size, offset) < page_size) {
- ret = submit_one_bio(rw, bio, mirror_num,
- prev_bio_flags);
+ ret = submit_one_bio(bio, mirror_num, prev_bio_flags);
if (ret < 0) {
*bio_ret = NULL;
return ret;
@@ -2813,6 +2812,7 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree,
bio_add_page(bio, page, page_size, offset);
bio->bi_end_io = end_io_func;
bio->bi_private = tree;
+ bio_set_op_attrs(bio, op, op_flags);
if (wbc) {
wbc_init_bio(wbc, bio);
wbc_account_io(wbc, page, page_size);
@@ -2821,7 +2821,7 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree,
if (bio_ret)
*bio_ret = bio;
else
- ret = submit_one_bio(rw, bio, mirror_num, bio_flags);
+ ret = submit_one_bio(bio, mirror_num, bio_flags);
return ret;
}
@@ -2885,7 +2885,7 @@ static int __do_readpage(struct extent_io_tree *tree,
get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw,
+ unsigned long *bio_flags, int read_flags,
u64 *prev_em_start)
{
struct inode *inode = page->mapping->host;
@@ -3068,8 +3068,8 @@ static int __do_readpage(struct extent_io_tree *tree,
}
pnr -= page->index;
- ret = submit_extent_page(rw, tree, NULL, page,
- sector, disk_io_size, pg_offset,
+ ret = submit_extent_page(REQ_OP_READ, read_flags, tree, NULL,
+ page, sector, disk_io_size, pg_offset,
bdev, bio, pnr,
end_bio_extent_readpage, mirror_num,
*bio_flags,
@@ -3100,7 +3100,7 @@ static inline void __do_contiguous_readpages(struct extent_io_tree *tree,
get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw,
+ unsigned long *bio_flags,
u64 *prev_em_start)
{
struct inode *inode;
@@ -3121,7 +3121,7 @@ static inline void __do_contiguous_readpages(struct extent_io_tree *tree,
for (index = 0; index < nr_pages; index++) {
__do_readpage(tree, pages[index], get_extent, em_cached, bio,
- mirror_num, bio_flags, rw, prev_em_start);
+ mirror_num, bio_flags, 0, prev_em_start);
put_page(pages[index]);
}
}
@@ -3131,7 +3131,7 @@ static void __extent_readpages(struct extent_io_tree *tree,
int nr_pages, get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw,
+ unsigned long *bio_flags,
u64 *prev_em_start)
{
u64 start = 0;
@@ -3153,7 +3153,7 @@ static void __extent_readpages(struct extent_io_tree *tree,
index - first_index, start,
end, get_extent, em_cached,
bio, mirror_num, bio_flags,
- rw, prev_em_start);
+ prev_em_start);
start = page_start;
end = start + PAGE_SIZE - 1;
first_index = index;
@@ -3164,7 +3164,7 @@ static void __extent_readpages(struct extent_io_tree *tree,
__do_contiguous_readpages(tree, &pages[first_index],
index - first_index, start,
end, get_extent, em_cached, bio,
- mirror_num, bio_flags, rw,
+ mirror_num, bio_flags,
prev_em_start);
}
@@ -3172,7 +3172,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
struct page *page,
get_extent_t *get_extent,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw)
+ unsigned long *bio_flags, int read_flags)
{
struct inode *inode = page->mapping->host;
struct btrfs_ordered_extent *ordered;
@@ -3192,7 +3192,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
}
ret = __do_readpage(tree, page, get_extent, NULL, bio, mirror_num,
- bio_flags, rw, NULL);
+ bio_flags, read_flags, NULL);
return ret;
}
@@ -3204,9 +3204,9 @@ int extent_read_full_page(struct extent_io_tree *tree, struct page *page,
int ret;
ret = __extent_read_full_page(tree, page, get_extent, &bio, mirror_num,
- &bio_flags, READ);
+ &bio_flags, 0);
if (bio)
- ret = submit_one_bio(READ, bio, mirror_num, bio_flags);
+ ret = submit_one_bio(bio, mirror_num, bio_flags);
return ret;
}
@@ -3440,8 +3440,8 @@ static noinline_for_stack int __extent_writepage_io(struct inode *inode,
page->index, cur, end);
}
- ret = submit_extent_page(write_flags, tree, wbc, page,
- sector, iosize, pg_offset,
+ ret = submit_extent_page(REQ_OP_WRITE, write_flags, tree, wbc,
+ page, sector, iosize, pg_offset,
bdev, &epd->bio, max_nr,
end_bio_extent_writepage,
0, 0, 0, false);
@@ -3480,13 +3480,11 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc,
size_t pg_offset = 0;
loff_t i_size = i_size_read(inode);
unsigned long end_index = i_size >> PAGE_SHIFT;
- int write_flags;
+ int write_flags = 0;
unsigned long nr_written = 0;
if (wbc->sync_mode == WB_SYNC_ALL)
write_flags = WRITE_SYNC;
- else
- write_flags = WRITE;
trace___extent_writepage(page, inode, wbc);
@@ -3730,7 +3728,7 @@ static noinline_for_stack int write_one_eb(struct extent_buffer *eb,
u64 offset = eb->start;
unsigned long i, num_pages;
unsigned long bio_flags = 0;
- int rw = (epd->sync_io ? WRITE_SYNC : WRITE) | REQ_META;
+ int write_flags = (epd->sync_io ? WRITE_SYNC : 0) | REQ_META;
int ret = 0;
clear_bit(EXTENT_BUFFER_WRITE_ERR, &eb->bflags);
@@ -3744,9 +3742,10 @@ static noinline_for_stack int write_one_eb(struct extent_buffer *eb,
clear_page_dirty_for_io(p);
set_page_writeback(p);
- ret = submit_extent_page(rw, tree, wbc, p, offset >> 9,
- PAGE_SIZE, 0, bdev, &epd->bio,
- -1, end_bio_extent_buffer_writepage,
+ ret = submit_extent_page(REQ_OP_WRITE, write_flags, tree, wbc,
+ p, offset >> 9, PAGE_SIZE, 0, bdev,
+ &epd->bio, -1,
+ end_bio_extent_buffer_writepage,
0, epd->bio_flags, bio_flags, false);
epd->bio_flags = bio_flags;
if (ret) {
@@ -4056,13 +4055,12 @@ retry:
static void flush_epd_write_bio(struct extent_page_data *epd)
{
if (epd->bio) {
- int rw = WRITE;
int ret;
- if (epd->sync_io)
- rw = WRITE_SYNC;
+ bio_set_op_attrs(epd->bio, REQ_OP_WRITE,
+ epd->sync_io ? WRITE_SYNC : 0);
- ret = submit_one_bio(rw, epd->bio, 0, epd->bio_flags);
+ ret = submit_one_bio(epd->bio, 0, epd->bio_flags);
BUG_ON(ret < 0); /* -ENOMEM */
epd->bio = NULL;
}
@@ -4189,19 +4187,19 @@ int extent_readpages(struct extent_io_tree *tree,
if (nr < ARRAY_SIZE(pagepool))
continue;
__extent_readpages(tree, pagepool, nr, get_extent, &em_cached,
- &bio, 0, &bio_flags, READ, &prev_em_start);
+ &bio, 0, &bio_flags, &prev_em_start);
nr = 0;
}
if (nr)
__extent_readpages(tree, pagepool, nr, get_extent, &em_cached,
- &bio, 0, &bio_flags, READ, &prev_em_start);
+ &bio, 0, &bio_flags, &prev_em_start);
if (em_cached)
free_extent_map(em_cached);
BUG_ON(!list_empty(pages));
if (bio)
- return submit_one_bio(READ, bio, 0, bio_flags);
+ return submit_one_bio(bio, 0, bio_flags);
return 0;
}
@@ -5236,7 +5234,7 @@ int read_extent_buffer_pages(struct extent_io_tree *tree,
err = __extent_read_full_page(tree, page,
get_extent, &bio,
mirror_num, &bio_flags,
- READ | REQ_META);
+ REQ_META);
if (err)
ret = err;
} else {
@@ -5245,8 +5243,7 @@ int read_extent_buffer_pages(struct extent_io_tree *tree,
}
if (bio) {
- err = submit_one_bio(READ | REQ_META, bio, mirror_num,
- bio_flags);
+ err = submit_one_bio(bio, mirror_num, bio_flags);
if (err)
return err;
}