Function Pointer Question

[Nicholas Krause]

On April 2, 2015 9:13:38 AM EDT, Valdis.Kletnieks at vt.edu wrote:
>On Thu, 02 Apr 2015 06:54:42 -0400, Nicholas Krause said:
>
>> I looked in to it and the kernel seems to be one of the few places
>where this
>> is done along with in line functions.  Why do we need function
>pointers in the
>> kernel, outside of device drivers is my real question and is there
>any way to
>> do the code using them without function pointers at all, I am
>assuming no.
>
>Geez Nick, you didn't look very hard at all, did you?
>
>[/usr/src/linux-next] find include -type f | xargs egrep '^struct
>.*_op.*{$' | sort
>
>There's 391 of them (at least in yesterday's linux-next tree).
>
>You should *at least* know and understand 'struct file_operations',
>'struct dentry_operations', 'struct inode_operations', and 'struct
>super_operations"
>if you plan to have any realistic hope of understanding the VFS - which
>should
>be important to you, as I seem to recall you were interested in btrfs2.
>
>See include/linux/fs.h for the details.
I do know about those too, however I was just curious about areas that the kernel does this I known the vfs and drivers do this. 
Thanks, 
Nick 

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