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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 <axboe@suse.de>
This commit is contained in:
Jens Axboe
2006-04-26 10:59:21 +02:00
parent 016b661e2f
commit 912d35f867
9 changed files with 268 additions and 43 deletions
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arch/ia64/kernel/entry.S
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@@ -1610,5 +1610,6 @@ sys_call_table:
data8 sys_get_robust_list
data8 sys_sync_file_range // 1300
data8 sys_tee
data8 sys_vmsplice
.org sys_call_table + 8*NR_syscalls // guard against failures to increase NR_syscalls