RE: doubt about 99% of the cases if the first byte of the file is cached.

On Tue, 23 Apr 2002, Liang Yang wrote:

> Yes, Hard disk LED flashes for sometime even the server received the
> request of the same 10MB file for the 3rd, 4th,5th time. [...]

do you have the 'noatime' mount-option enabled? Otherwise the atime field
will be updated on disk.

> I know how to read the first byte of a specific file(set
> req->desc.count=1 before I invoke do_generic_file_read ), but I don't
> know how to read just the last byte of file.

set in_file.f_pos to be inode->i_size-1, and use desc.count=1.

	Ingo