Hi Prasanna, --- prasanna wakhare <prasannawakhare@xxxxxxxxx> wrote: > hi all, > EXT2 and many disk based filesystems used the > generic_file_read/write provided by VFS layer for > readinf and writing but EXT3 and NFS have their > custom > functions for that, The VFS provides a generic interface for implementing various filesystems.Considering that EXT2 was the native filesystem for Linux, I think most of the work for opening a file in this fs type is done by VFS using the generic_file_read/write.But EXT3 and NFS have too specialized requirements from a read and write operation, thats why they are implemented separately.Since the VFS generic_file_read/write are also needed by other filesystem types they cannot be changed. > i mean to say why networked file systems needs > special > call for that can VFS will not handle that too, Again, VFS is only a generic interface for filesystems and not a 'universal file system services provider' sort of a thing. > thanks > and Sorry if i have'n't dont my homework proper in > filesystems You can google for and read the vfs.txt in kernel docs and the VFS commentary by Neil Brown for starters. > thanks > Prasanna -Shehjar __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - 100MB free storage! http://promotions.yahoo.com/new_mail -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
