Messages in this thread | | | Date | Sat, 11 Mar 2017 13:44:10 -0800 | From | Eric Biggers <> | Subject | Re: [PATCH] statx: optimize copy of struct statx to userspace |
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On Sat, Mar 11, 2017 at 02:15:10AM -0800, Eric Biggers wrote: > stat() instead initializes its struct on the stack and copies it to > userspace with a single call to copy_to_user(). This turns out to be > much faster, and changing statx to do this makes it almost as fast as > stat:
Hmm, I missed that the access_ok() check in sys_statx() will no longer be needed. I'm sending a revised patch that removes that too.
Eric
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