linux-toradex.git/fs/bio-integrity.c, branch v2.6.30-rc5

block: add private bio_set for bio integrity allocations

2009-03-24T11:35:17+00:00

The integrity bio allocation needs its own bio_set to avoid violating
the mempool allocation rules and risking deadlocks.

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

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: Remove obsolete BUG_ON

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

Now that bio_vecs are no longer cleared in bvec_alloc_bs() the following
BUG_ON must go.

Signed-off-by: Martin K. Petersen 
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: 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

block: Introduce integrity data ownership flag

2008-10-09T06:56:21+00:00

A filesystem might supply its own integrity metadata.  Introduce a
flag that indicates whether the filesystem or the block layer owns the
integrity buffer.

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

block: revert part of d7533ad0e132f92e75c1b2eb7c26387b25a583c1

2008-10-09T06:56:21+00:00

We need bdev_get_integrity() to support the pending md/dm patches.

Signed-off-by: Jens Axboe

block: cleanup some of the integrity stuff in blkdev.h

2008-10-09T06:56:17+00:00

Don't put functions that are only used in fs/bio-integrity.c in
blkdev.h, it's much cleaner to just keep it in there. Also kill
completely unused bdev_get_tag_size()

Signed-off-by: Jens Axboe

bio-integrity: remove EXPORT_SYMBOL for bio_integrity_init_slab()

2008-07-28T23:30:21+00:00

I got section mismatch message about bio_integrity_init_slab().

WARNING: fs/built-in.o(__ksymtab+0xb60): Section mismatch in reference from the variable __ksymtab_bio_integrity_init_slab to the function .init.text:bio_integrity_init_slab()

The symbol bio_integrity_init_slab is exported and annotated __init Fix
this by removing the __init annotation of bio_integrity_init_slab or drop
the export.

It only call from init_bio().  The EXPORT_SYMBOL() can be removed.

Signed-off-by: Yoichi Yuasa 
Cc: "Martin K. Petersen" 
Cc: Jens Axboe 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

block: integrity checkpatch cleanups

2008-07-03T11:21:13+00:00

> 80 char lines and that sort of thing.

Signed-off-by: Jens Axboe