linux-toradex.git/kernel/relay.c, branch v2.6.26-rc3

Revert "relay: fix splice problem"

2008-05-08T12:06:19+00:00

This reverts commit c3270e577c18b3d0e984c3371493205a4807db9d.

Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

2008-04-29T15:18:03+00:00

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  block: Skip I/O merges when disabled
  block: add large command support
  block: replace sizeof(rq->cmd) with BLK_MAX_CDB
  ide: use blk_rq_init() to initialize the request
  block: use blk_rq_init() to initialize the request
  block: rename and export rq_init()
  block: no need to initialize rq->cmd with blk_get_request
  block: no need to initialize rq->cmd in prepare_flush_fn hook
  block/blk-barrier.c:blk_ordered_cur_seq() mustn't be inline
  block/elevator.c:elv_rq_merge_ok() mustn't be inline
  block: make queue flags non-atomic
  block: add dma alignment and padding support to blk_rq_map_kern
  unexport blk_max_pfn
  ps3disk: Remove superfluous cast
  block: make rq_init() do a full memset()
  relay: fix splice problem

relayfs: support larger relay buffer

2008-04-29T15:06:28+00:00

Use vmalloc() and memset() instead of kcalloc() to allocate a page* array when
the array size is bigger than one page.  This enables relayfs to support
bigger relay buffers than 64MB on 4k-page system, 512MB on 16k-page system.

[akpm@linux-foundation.org: cleanup]
Signed-off-by: Masami Hiramatsu 
Cc: David Wilder 
Reviewed-by: Tom Zanussi 
Reviewed-by: Pekka Enberg 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

relay: fix splice problem

2008-04-29T07:48:15+00:00

Splice isn't always incrementing the ppos correctly, which broke
relay splice.

Signed-off-by: Tom Zanussi 
Signed-off-by: Jens Axboe

relay: set an spd_release() hook for splice

2008-03-26T11:04:09+00:00

relay doesn't reference the pages it adds, however we need a non-NULL
hook or splice_to_pipe() can oops.

Signed-off-by: Jens Axboe

set relay file can not be read by pread(2)

2008-03-26T11:01:28+00:00

I found that relay files can be read by pread(2). I fix it,
for relay files are not capable of seeking.

Signed-off-by: Lai Jiangshan 
Signed-off-by: Jens Axboe

relay: fix subbuf_splice_actor() adding too many pages

2008-03-17T08:04:59+00:00

If subbuf_pages was larger than the max number of pages the pipe
buffer will hold, subbuf_splice_actor() would happily go beyond
the array size.

Signed-off-by: Jens Axboe

relay: nopage

2008-02-06T18:41:07+00:00

Convert relay from nopage to fault.
Remove redundant vma range checks.
Switch from OOM to SIGBUS if the resource is not available.

Signed-off-by: Nick Piggin 
Cc: Tom Zanussi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

vm audit: add VM_DONTEXPAND to mmap for drivers that need it

2008-02-04T15:55:38+00:00

Drivers that register a ->fault handler, but do not range-check the
offset argument, must set VM_DONTEXPAND in the vm_flags in order to
prevent an expanding mremap from overflowing the resource.

I've audited the tree and attempted to fix these problems (usually by
adding VM_DONTEXPAND where it is not obvious).

Signed-off-by: Nick Piggin 
Signed-off-by: Linus Torvalds

whitespace fixes: relayfs

2007-10-18T21:37:24+00:00

Signed-off-by: Daniel Walker 
Cc: Tom Zanussi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds