Sorry imeant 3blocks Sankar P <[email protected]> wrote:
>On Mon, May 13, 2013 at 1:35 PM, shampavman <[email protected]> wrote: >> Hi all, >> >> Supposing i create a file of size 10K, it will occupy 2 blocks (4K each). >> Now if i want to read only 1 block from it how can i do it? >> > >It will require 3 blocks. > > >> read(fd, buf, 4096) ; >> would this mean i would read the first block and all its contents? >> > >It may be read even further (readahead) > >If you are in kernel mode, and if you want to implement your own >filesystem and want to read a single block, you can use the sb_bread >function. > > >-- >Sankar P >http://psankar.blogspot.com _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
