user/sven/linux.git/kernel/relay.c, branch v2.6.27.8

relay: fix "full buffer with exactly full last subbuffer" accounting problem

2008-08-05T21:33:46Z

In relay's current read implementation, if the buffer is completely full but hasn't triggered the buffer-full condition (i.e. the last write didn't cross the subbuffer boundary) and the last subbuffer is exactly full, the subbuffer accounting code erroneously finds nothing available. This patch fixes the problem. Signed-off-by: Tom Zanussi Cc: Eduard - Gabriel Munteanu Cc: Pekka Enberg Cc: Jens Axboe Cc: Mathieu Desnoyers Cc: Andrea Righi Cc: [2.6.25.x, 2.6.26.x] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

relay: add buffer-only channels; useful for early logging

2008-07-26T19:00:04Z

Allows one to create and use a channel with no associated files. Files can be initialized later. This is useful in scenarios such as logging in early code, before VFS is up. Therefore, such channels can be created and used as soon as kmem_cache_init() completed. This is needed by kmemtrace to do tracing in early kernel code. [kosaki.motohiro@jp.fujitsu.com: build fix] Signed-off-by: Eduard - Gabriel Munteanu Cc: Tom Zanussi Signed-off-by: KOSAKI Motohiro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

splice: fix sendfile() issue with relay

2008-05-28T12:49:27Z

Splice isn't always incrementing the ppos correctly, which broke relay splice. Signed-off-by: Tom Zanussi Tested-by: Dan Williams Signed-off-by: Jens Axboe

Revert "relay: fix splice problem"

2008-05-08T12:06:19Z

This reverts commit c3270e577c18b3d0e984c3371493205a4807db9d.

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

2008-04-29T15:18:03Z

* '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

2008-04-29T15:06:28Z

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

2008-04-29T07:48:15Z

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

2008-03-26T11:04:09Z

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)

2008-03-26T11:01:28Z

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

2008-03-17T08:04:59Z

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