K 10
svn:author
V 7
glebius
K 8
svn:date
V 27
2013-11-26T13:06:31.571735Z
K 7
svn:log
V 427
In sendfile() move the I/O out of the inner loop. Now we collect a chain
of mbufs, with attached sfbufs, with attached pages, and then pass it
once to sendfile_read(). The latter scans for the first invalid page,
and then initiates I/O.

Thus, now number of VFS I/Os is equal to number of writes to the socket.

Right now sendfile() on shared memory file descriptors is broken.

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.

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