[Fontconfig] [PATCH 1/2] Use MAP_POPULATE to eliminate startup page faults.

Behdad Esfahbod behdad at behdad.org
Thu Dec 31 12:54:10 PST 2009

On 12/31/2009 09:49 PM, Keith Packard wrote:
> +	cache = mmap (0, fd_stat->st_size, PROT_READ, MAP_SHARED | MAP_POPULATE, fd, 0);

Hi Keith,

The mmap manpage says: MAP_POPULATE is  only  supported  for private mappings 
since Linux 2.6.23.  Does the POPULATE do anything with MAP_SHARED?

An alternative would be calling fadvise().


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