Am 8/8/2012 14:05, schrieb Nguyen Thai Ngoc Duy:
> uOn Wed, Aug 8, 2012 at 6:17 PM, Thomas Gummerer <t.gummerer@xxxxxxxxx> wrote:
>> +static struct cache_entry *read_entry(struct directory_entry *de,
>> + unsigned long *entry_offset,
>> + void **mmap,
>> + unsigned long mmap_size,
>> + unsigned int *foffsetblock,
>> + int fd)
>> +{
>> ....
>> + if (crc_wrong) {
>> + /* wait for 10 milliseconds */
>> + usleep(10*1000);
>> + munmap(*mmap, mmap_size);
>> + *mmap = xmmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
>> + }
>
> Do we really need to munmap and mmap again?
Yes. mmap may be the pread()-based implementation from compat/mmap.c.
-- Hannes
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