cvs commit: src/sys/kern sys_pipe.c

[Pierre Beyssac]

pb          2003/07/30 15:50:38 PDT

  FreeBSD src repository

  Modified files:
    sys/kern             sys_pipe.c 
  Log:
  Remove test in pipe_write() which causes write(2) to return EAGAIN
  on a non-blocking pipe in cases where select(2) returns the file
  descriptor as ready for write. This in turns causes libc_r, for
  one, to busy wait in such cases.
  
  Note: it is a quick performance fix, a more complex fix might be
  required in case this turns out to have unexpected side effects.
  
  Reviewed by:    silby
  MFC after:      3 days
  
  Revision  Changes    Path
  1.141     +1 -1      src/sys/kern/sys_pipe.c