• David Howells's avatar
    pipe: Allow buffers to be marked read-whole-or-error for notifications · 8cfba763
    David Howells authored
    Allow a buffer to be marked such that read() must return the entire buffer
    in one go or return ENOBUFS.  Multiple buffers can be amalgamated into a
    single read, but a short read will occur if the next "whole" buffer won't
    fit.
    
    This is useful for watch queue notifications to make sure we don't split a
    notification across multiple reads, especially given that we need to
    fabricate an overrun record under some circumstances - and that isn't in
    the buffers.
    Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
    8cfba763
watch_test.c 3.77 KB