John Ogness wrote:
I would prefer to know why generic_file_readonly_mmap() isn't working
as we expect: as read-only. Perhaps we are simply using the generic
functions incorrectly. DazukoFS is not the only filesystem that does
not support mmap-writing. Others are jffs2, afs, 9p.
I dont know if there is anything wrong with our mmap() solution.
But I am sure that simply removing these lines
.aio_read = generic_file_aio_read,
.aio_write = generic_file_aio_write,
from the dazukofs_main_fops will be sufficient to avoid the bug
http://lists.gnu.org/archive/html/dazuko-devel/2009-10/msg00002.html
for the reasons I gave in my former post.
IMO this bug has nothing to do with mmap().
Regards,
Lino Sanfilippo
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