On Tue, 2 Oct 2007 19:54:53 +0200 (CEST) Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx> wrote: > [PATCH]: Fill the size of pipes > > Instead of reporting 0 in size when stating() a pipe, we give the number of > queued bytes. This might avoid using ioctl(FIONREAD) to get this information. > > References and derived from: http://lkml.org/lkml/2007/4/2/138 > Cc: Eric Dumazet <dada1@xxxxxxxxxxxxx> > Signed-off-by: Jan Engelhardt <jengelh@xxxxxx> Cute feature, but it is (I assume) a Linux-specific extension and is something which we'll need to maintain for ever and it invites unportability to older Linuxes and other OSes and it introduces some risk of breakage of existing applications. And it slows down fstat on a pipe. Given that the info can already be obtained via ioctl(FIONREAD) anyway, I don't think that (gain > pain)? - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
