linux-stable.git/include/linux/bio.h, branch linux-2.6.29.y

block: Add gfp_mask parameter to bio_integrity_clone()

2009-03-14T20:06:51+00:00

Stricter gfp_mask might be required for clone allocation.
For example, request-based dm may clone bio in interrupt context
so it has to use GFP_ATOMIC.

Signed-off-by: Kiyoshi Ueda 
Signed-off-by: Jun'ichi Nomura 
Acked-by: Martin K. Petersen 
Cc: Alasdair G Kergon 
Signed-off-by: Jens Axboe

block: fix bad definition of BIO_RW_SYNC

2009-02-18T09:32:00+00:00

We can't OR shift values, so get rid of BIO_RW_SYNC and use BIO_RW_SYNCIO
and BIO_RW_UNPLUG explicitly. This brings back the behaviour from before
213d9417fec62ef4c3675621b9364a667954d4dd.

Signed-off-by: Jens Axboe

bio.h: If they MUST be inlined, then use __always_inline

2009-02-02T11:41:07+00:00

bvec_kmap_irq() and bvec_kunmap_irq() comments say they MUST be inlined,
so mark them as __always_inline.

Signed-off-by: Alberto Bertogli 
Signed-off-by: Jens Axboe

Fix misleading comment in bio.h

2009-02-02T11:41:07+00:00

The comment says "remember to add offset!", but the function already adds
it.

Signed-off-by: Alberto Bertogli 
Signed-off-by: Jens Axboe

block: add bio_rw_flagged() for testing bio->bi_rw

2009-01-30T11:34:37+00:00

The existing functions for checking bio->bi_rw are badly named. So lets
mirror what we do for bio->bi_flags testing, use a properly named
function so that it's immediately obvious what is being tested.

Maintain compatability names for the old macros, eventually we'll get
rid of these.

Signed-off-by: Jens Axboe

block: seperate bio/request unplug and sync bits

2009-01-30T11:34:37+00:00

Signed-off-by: Jens Axboe

Fix small typo in bio.h's documentation

2009-01-30T11:34:37+00:00

Signed-off-by: Alberto Bertogli 
Signed-off-by: Jens Axboe

block: Don't verify integrity metadata on read error

2009-01-30T11:34:36+00:00

If we get an I/O error on a read request there is no point in doing a
verify pass on the integrity buffer.  Adjust the completion path
accordingly.

Signed-off-by: Martin K. Petersen 
Signed-off-by: Jens Axboe

bio: add support for inlining a number of bio_vecs inside the bio

2008-12-29T07:29:50+00:00

When we go and allocate a bio for IO, we actually do two allocations.
One for the bio itself, and one for the bi_io_vec that holds the
actual pages we are interested in.

This feature inlines a definable amount of io vecs inside the bio
itself, so we eliminate the bio_vec array allocation for IO's up
to a certain size. It defaults to 4 vecs, which is typically 16k
of IO.

Signed-off-by: Jens Axboe

bio: allow individual slabs in the bio_set

2008-12-29T07:29:23+00:00

Instead of having a global bio slab cache, add a reference to one
in each bio_set that is created. This allows for personalized slabs
in each bio_set, so that they can have bios of different sizes.

This means we can personalize the bios we return. File systems may
want to embed the bio inside another structure, to avoid allocation
more items (and stuffing them in ->bi_private) after the get a bio.
Or we may want to embed a number of bio_vecs directly at the end
of a bio, to avoid doing two allocations to return a bio. This is now
possible.

Signed-off-by: Jens Axboe