On Wed, Jul 25, 2007 at 07:39:53AM +0100, Al Viro wrote:
> For superblocks and inodes that is different - if we go looking for a method,
> we *are* going to hit the method table anyway; it's not going to be NULL in
> anything resembling a normal case. So having the pointer to table initialized
"
On Wed, Jul 25, 2007 at 01:21:19PM +0800, rae l wrote:
> But there are also many other subsystems will do
> fs/dcache.c:
> void dput(struct dentry *dentry)
> if (dentry->d_op && dentry->d_op->d_delete) {
> Do you think it's worth optimizing it with a static d_op filled?
>
> we can add a st
On 7/25/07, Al Viro <[EMAIL PROTECTED]> wrote:
On Wed, Jul 25, 2007 at 12:29:17PM +0800, rae l wrote:
> But is it valuable? Compared to a waste of sizeof(struct super_block)
> bytes memory.
It's less that struct super_block, actually.
> When some code want to refer fs_type->s_op, it almost alwa
On Wed, Jul 25, 2007 at 12:29:17PM +0800, rae l wrote:
> But is it valuable? Compared to a waste of sizeof(struct super_block)
> bytes memory.
It's less that struct super_block, actually.
> When some code want to refer fs_type->s_op, it almost always want to
> refer some function pointer in s_op
On 7/25/07, Al Viro <[EMAIL PROTECTED]> wrote:
On Wed, Jul 25, 2007 at 11:48:35AM +0800, rae l wrote:
> Why alloc_super use a static variable default_op?
> the static struct super_operations default_op is just all zeros, and
> just referenced as the initial value of a new allocated super_block,
>
On Wed, Jul 25, 2007 at 11:48:35AM +0800, rae l wrote:
> Why alloc_super use a static variable default_op?
> the static struct super_operations default_op is just all zeros, and
> just referenced as the initial value of a new allocated super_block,
> what does it for?
So that we would not have to
Why alloc_super use a static variable default_op?
the static struct super_operations default_op is just all zeros, and
just referenced as the initial value of a new allocated super_block,
what does it for?
the filesystem dependent code such as ext2_fill_super would fill this
field eventually,
and
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