On Fri, 27 Mar 2015 09:30:46 -0700 Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > I expect that this situation (first part in cache, latter part not in > cache) is rare - for reasonably small requests the common cases will be > "all cached" and "nothing cached". So perhaps the best approach here > is for samba to add special handling for the short read, to work out > the reason for its occurrence. > > Alternatively we could add another flag to pread2() to select this > "throw away my data and return -EAGAIN" behaviour. Presumably > implemented with an i_size check, but it's gonna be racy. Here's a better way: nr_read = pread2(buf, len); if (nr_read < len) nr_read += pread(buf + nr_read, len - nr_read); if (nr_read < len) we_hit_eof(); -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
