[PATCH] splice: add direct fd <-> fd splicing support

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It's more efficient for sendfile() emulation. Basically we cache an
internal private pipe and just use that as the intermediate area for
pages. Direct splicing is not available from sys_splice(), it is only
meant to be used for sendfile() emulation.

Additional patch from Ingo Molnar to avoid the PIPE_BUFFERS loop at
exit for the normal fast path.

Signed-off-by: Jens Axboe <axboe@suse.de>

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This commit is contained in:

Jens Axboe 2006-04-11 13:52:07 +02:00

parent 529565dcb1

commit b92ce55893

6 changed files with 150 additions and 21 deletions

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10

fs/pipe.c

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148

fs/splice.c

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2

include/linux/fs.h

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1

include/linux/pipe_fs_i.h

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6

include/linux/sched.h

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4

kernel/exit.c

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