On 05/08/2018 04:57 PM, Florian Weimer wrote: > On 05/08/2018 11:24 PM, Goldwyn Rodrigues wrote: >> While performing copy_file_range(), if superblocks of file_in and >> file_out don't match, instead of returning -EXDEV, perform >> splice for a faster copy. > > We have a userspace emulation in glibc which used to be quite faithful, > including the EXDEV error (which is not strictly necessary to produce). > > Should we change glibc to perform a userspace copy if the system call > returns EXDEV due to an older kernel? > I don't seen any purpose. The user would anyways have to perform a copy if it receives -EXDEV. -- Goldwyn
