On Tue, Jul 3, 2012 at 9:48 AM, James Litchfield <jim.litchfi...@oracle.com> wrote: > On 07/02/12 15:00, Nico Williams wrote: >> You can't count on any writes to mmap(2)ed files hitting disk until >> you msync(2) with MS_SYNC. The system should want to wait as long as >> possible before committing any mmap(2)ed file writes to disk. >> Conversely you can't expect that no writes will hit disk until you >> msync(2) or munmap(2). > > Driven by fsflush which will scan memory (in chunks) looking for dirty, > unlocked, non-kernel pages to flush to disk.
Right, but one just cannot count on that -- it's not part of the API specification. Nico -- _______________________________________________ zfs-discuss mailing list email@example.com http://mail.opensolaris.org/mailman/listinfo/zfs-discuss