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Thu, 18 Jun 2020 22:51:42 +0200 Subject: Re: rename probe_kernel_* and probe_user_* To: Linus Torvalds , Christoph Hellwig , Russell King , Tony Luck , Michael Ellerman References: <20200617073755.8068-1-hch@lst.de> From: Helge Deller Autocrypt: addr=deller@gmx.de; keydata= mQINBF3Ia3MBEAD3nmWzMgQByYAWnb9cNqspnkb2GLVKzhoH2QD4eRpyDLA/3smlClbeKkWT HLnjgkbPFDmcmCz5V0Wv1mKYRClAHPCIBIJgyICqqUZo2qGmKstUx3pFAiztlXBANpRECgwJ r+8w6mkccOM9GhoPU0vMaD/UVJcJQzvrxVHO8EHS36aUkjKd6cOpdVbCt3qx8cEhCmaFEO6u CL+k5AZQoABbFQEBocZE1/lSYzaHkcHrjn4cQjc3CffXnUVYwlo8EYOtAHgMDC39s9a7S90L 69l6G73lYBD/Br5lnDPlG6dKfGFZZpQ1h8/x+Qz366Ojfq9MuuRJg7ZQpe6foiOtqwKym/zV dVvSdOOc5sHSpfwu5+BVAAyBd6hw4NddlAQUjHSRs3zJ9OfrEx2d3mIfXZ7+pMhZ7qX0Axlq Lq+B5cfLpzkPAgKn11tfXFxP+hcPHIts0bnDz4EEp+HraW+oRCH2m57Y9zhcJTOJaLw4YpTY GRUlF076vZ2Hz/xMEvIJddRGId7UXZgH9a32NDf+BUjWEZvFt1wFSW1r7zb7oGCwZMy2LI/G aHQv/N0NeFMd28z+deyxd0k1CGefHJuJcOJDVtcE1rGQ43aDhWSpXvXKDj42vFD2We6uIo9D 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, Andrew Morton , linuxppc-dev Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 18.06.20 21:48, Linus Torvalds wrote: > [ Explicitly added architecture lists and developers to the cc to make > this more visible ] > > On Wed, Jun 17, 2020 at 12:38 AM Christoph Hellwig wrote: >> >> Andrew and I decided to drop the patches implementing your suggested >> rename of the probe_kernel_* and probe_user_* helpers from -mm as there >> were way to many conflicts. After -rc1 might be a good time for this a= s >> all the conflicts are resolved now. > > So I've merged this renaming now, together with my changes to make > 'get_kernel_nofault()' look and act a lot more like 'get_user()'. > > It just felt wrong (and potentially dangerous) to me to have a > 'get_kernel_nofault()' naming that implied semantics that we're all > familiar with from 'get_user()', but acting very differently. > > But part of the fixups I made for the type checking are for > architectures where I didn't even compile-test the end result. I > looked at every case individually, and the patch looks sane, but I > could have screwed something up. > > Basically, 'get_kernel_nofault()' doesn't do the same automagic type > munging from the pointer to the target that 'get_user()' does, but at > least now it checks that the types are superficially compatible. > There should be build failures if they aren't, but I hopefully fixed > everything up properly for all architectures. > > This email is partly to ask people to double-check, but partly just as > a heads-up so that _if_ I screwed something up, you'll have the > background and it won't take you by surprise. Linus. thanks for the heads-up! With your change it compiles cleanly on 32- and 64-bit parisc. Helge