diff options
author | 2016-04-11 10:41:07 +0300 | |
---|---|---|
committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/md/dm-bufio.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/md/dm-bufio.c')
-rw-r--r-- | kernel/drivers/md/dm-bufio.c | 44 |
1 files changed, 23 insertions, 21 deletions
diff --git a/kernel/drivers/md/dm-bufio.c b/kernel/drivers/md/dm-bufio.c index 86dbbc737..2dd33085b 100644 --- a/kernel/drivers/md/dm-bufio.c +++ b/kernel/drivers/md/dm-bufio.c @@ -545,7 +545,8 @@ static void dmio_complete(unsigned long error, void *context) { struct dm_buffer *b = context; - b->bio.bi_end_io(&b->bio, error ? -EIO : 0); + b->bio.bi_error = error ? -EIO : 0; + b->bio.bi_end_io(&b->bio); } static void use_dmio(struct dm_buffer *b, int rw, sector_t block, @@ -575,13 +576,16 @@ static void use_dmio(struct dm_buffer *b, int rw, sector_t block, b->bio.bi_end_io = end_io; r = dm_io(&io_req, 1, ®ion, NULL); - if (r) - end_io(&b->bio, r); + if (r) { + b->bio.bi_error = r; + end_io(&b->bio); + } } -static void inline_endio(struct bio *bio, int error) +static void inline_endio(struct bio *bio) { bio_end_io_t *end_fn = bio->bi_private; + int error = bio->bi_error; /* * Reset the bio to free any attached resources @@ -589,7 +593,8 @@ static void inline_endio(struct bio *bio, int error) */ bio_reset(bio); - end_fn(bio, error); + bio->bi_error = error; + end_fn(bio); } static void use_inline_bio(struct dm_buffer *b, int rw, sector_t block, @@ -661,13 +666,14 @@ static void submit_io(struct dm_buffer *b, int rw, sector_t block, * Set the error, clear B_WRITING bit and wake anyone who was waiting on * it. */ -static void write_endio(struct bio *bio, int error) +static void write_endio(struct bio *bio) { struct dm_buffer *b = container_of(bio, struct dm_buffer, bio); - b->write_error = error; - if (unlikely(error)) { + b->write_error = bio->bi_error; + if (unlikely(bio->bi_error)) { struct dm_bufio_client *c = b->c; + int error = bio->bi_error; (void)cmpxchg(&c->async_write_error, 0, error); } @@ -1026,11 +1032,11 @@ found_buffer: * The endio routine for reading: set the error, clear the bit and wake up * anyone waiting on the buffer. */ -static void read_endio(struct bio *bio, int error) +static void read_endio(struct bio *bio) { struct dm_buffer *b = container_of(bio, struct dm_buffer, bio); - b->read_error = error; + b->read_error = bio->bi_error; BUG_ON(!test_bit(B_READING, &b->state)); @@ -1592,11 +1598,11 @@ struct dm_bufio_client *dm_bufio_client_create(struct block_device *bdev, unsign c->bdev = bdev; c->block_size = block_size; - c->sectors_per_block_bits = ffs(block_size) - 1 - SECTOR_SHIFT; - c->pages_per_block_bits = (ffs(block_size) - 1 >= PAGE_SHIFT) ? - ffs(block_size) - 1 - PAGE_SHIFT : 0; - c->blocks_per_page_bits = (ffs(block_size) - 1 < PAGE_SHIFT ? - PAGE_SHIFT - (ffs(block_size) - 1) : 0); + c->sectors_per_block_bits = __ffs(block_size) - SECTOR_SHIFT; + c->pages_per_block_bits = (__ffs(block_size) >= PAGE_SHIFT) ? + __ffs(block_size) - PAGE_SHIFT : 0; + c->blocks_per_page_bits = (__ffs(block_size) < PAGE_SHIFT ? + PAGE_SHIFT - __ffs(block_size) : 0); c->aux_size = aux_size; c->alloc_callback = alloc_callback; @@ -1855,12 +1861,8 @@ static void __exit dm_bufio_exit(void) cancel_delayed_work_sync(&dm_bufio_work); destroy_workqueue(dm_bufio_wq); - for (i = 0; i < ARRAY_SIZE(dm_bufio_caches); i++) { - struct kmem_cache *kc = dm_bufio_caches[i]; - - if (kc) - kmem_cache_destroy(kc); - } + for (i = 0; i < ARRAY_SIZE(dm_bufio_caches); i++) + kmem_cache_destroy(dm_bufio_caches[i]); for (i = 0; i < ARRAY_SIZE(dm_bufio_cache_names); i++) kfree(dm_bufio_cache_names[i]); |