Messages in this thread |  | | From | (Alan Cox) | Subject | Re: linux/fs/open.c:sys_open() & filename zero copy patch | Date | Sun, 1 Dec 1996 17:32:44 +0000 (GMT) |
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> we currently do getname() to copy the pathname from user-space to > kernel-space. Is this necessary?
Yes. At the moment anyway. Your name reading routines can now sleep paging in user data. The originals do not. I can believe its possible to avoid getname but the overhead and extra races to avoid might not make it useful.
Alan
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