On 05/25/2010 08:47 PM, Nick Piggin wrote: >>> I hope that should provide a more elegant solution to your problem. I >>> would really like you to take a look at that, because we already have >>> filesystem code (NFS) relying on it, and more code we have relying on >>> this synchronization, the more chance we would find a subtle problem >>> with it (also it should be just nicer). >> >> So if I undestand it correctly, using the "new" calling convention I should just lock the page on fb_deferred_io_mkwrite() and return VM_FAULT_LOCKED to fix the described race for fb_defio. > > As far as I can see from quick reading of the fb_defio code, yes > that should solve it (provided you lock the page inside the mutex, > of course). > Ok, thanks. I'm posting a new version as RFT. Cheers, Albert -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>