>>>>> " " == Petr Vandrovec <VANDROVE@vc.cvut.cz> writes:
> It does not change anything on the brokeness of apache2 (or
> maybe glibc). It must be able to revert to read/write loop if
> sendfile fails with EINVAL. There is no guarantee that existing
> sendfile() API means that you can use it with all filesystems.
I disagree. Sendfile can *always* be emulated using the standard file
'read' method.
For most filesystems, that means just reading directly from the page
cache, and that is precisely what generic_file_sendfile() does. IIRC,
the sendfile() inode op was added so that those few filesystems which
don't support direct reading of the page cache could roll their own.
Cheers,
Trond
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This archive was generated by hypermail 2b29 : Fri Nov 15 2002 - 22:00:39 EST