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[PATCH] Add support for the sys_vmsplice syscall

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sys_splice() moves data to/from pipes with a file input/output. sys_vmsplice()
moves data to a pipe, with the input being a user address range instead.

This uses an approach suggested by Linus, where we can hold partial ranges
inside the pages[] map. Hopefully this will be useful for network
receive support as well.

Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Jens Axboe 2006-04-26 10:59:21 +02:00
commit 912d35f867
9 changed files with 268 additions and 43 deletions
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3
include/asm-i386/unistd.h
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@ -321,8 +321,9 @@
#define __NR_splice 313
#define __NR_sync_file_range 314
#define __NR_tee 315
#define __NR_vmsplice 316
#define NR_syscalls 316
#define NR_syscalls 317
/*
* user-visible error numbers are in the range -1 - -128: see