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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-ia64/unistd.h
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@ -290,12 +290,13 @@
#define __NR_get_robust_list 1299
#define __NR_sync_file_range 1300
#define __NR_tee 1301
#define __NR_vmsplice 1302
#ifdef __KERNEL__
#include <linux/config.h>
#define NR_syscalls 278 /* length of syscall table */
#define NR_syscalls 279 /* length of syscall table */
#define __ARCH_WANT_SYS_RT_SIGACTION