On Fri, May 01, 2020 at 04:20:20AM +0100, Al Viro wrote: > On Fri, May 01, 2020 at 03:37:34AM +0100, Al Viro wrote: > > On Thu, Apr 30, 2020 at 01:38:44PM -0700, ira.weiny@xxxxxxxxx wrote: > > > > > -static inline void *kmap_atomic(struct page *page) > > > +static inline void *kmap_atomic_prot(struct page *page, pgprot_t prot) > > > { > > > preempt_disable(); > > > pagefault_disable(); > > > if (!PageHighMem(page)) > > > return page_address(page); > > > - return kmap_atomic_high(page); > > > + return kmap_atomic_high_prot(page, prot); > > > } > > > +#define kmap_atomic(page) kmap_atomic_prot(page, kmap_prot) > > > > OK, so it *was* just a bisect hazard - you return to original semantics > > wrt preempt_disable()... > > FWIW, how about doing the following: just before #5/10 have a patch > that would touch only microblaze, ppc and x86 splitting their > kmap_atomic_prot() into an inline helper + kmap_atomic_high_prot(). > Then your #5 would leave their kmap_atomic_prot() as-is (it would > use kmap_atomic_prot_high() instead). The rest of the series plays > out pretty much the same way it does now, and wrappers on those > 3 architectures would go away when an identical generic one is > introduced in this commit (#9/10). > > AFAICS, that would avoid the bisect hazard and might even end > up with less noise in the patches... This works. V2 coming out shortly. Thanks for catching this, Ira _______________________________________________ linux-snps-arc mailing list linux-snps-arc@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-snps-arc