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SubjectRe: [PATCH] get_empty_inode() cleanup
replying to myself before someone flames me :)

I missed the word "inline" in Alexander's email (maybe because his code
snippet did not have it) so the "issues" I raised are in fact
"non-issues". (and if they were issues then there would be a serious bug
in his patch -- namely new_inode would need to be exported).

Regards,
Tigran

On Thu, 16 Nov 2000, Tigran Aivazian wrote:

> On Thu, 16 Nov 2000, Tigran Aivazian wrote:
>
> > On Thu, 16 Nov 2000, Alexander Viro wrote:
> >
> > > Almost all (== all filesystem and then some) callers of
> > > get_empty_inode() follow it with
> > > inode->i_sb = some_sb;
> > > inode->i_dev = some_sb->s_dev;
> > > Some of them do it twice for no good reason (assign the same value,
> > > even though neither ->i_sb nor ->i_dev could change in interval).
> > > Some of them duplicate the initializations already done by get_empty_inode()
> > > (e.g. ->i_size to 0, ->i_nlink to 1, etc.).
> > >
> > > Patch below adds an inlined function
> > > struct inode *new_inode(struct super_block *sb)
> > > {
> > > struct inode *inode = get_empty_inode();
> > > if (inode) {
> > > inode->i_sb = sb;
> > > inode->i_dev = sb->s_dev;
> > > }
> > > return inode;
> > > }
> >
> > Alexander,
> >
> > IMHO, instead of adding a new function, it is cleaner to just add the 'sb'
> > argument to get_empty_inode() and those who do not wish to pass it should
> > just pass NULL. Checking if(sb) inside it is easier than making yet
> > another function call, maybe.
> >
>
> on the other hand, even 1 minute's thought reveals that making strict
> logical separation between "consumers of inode with sb" and "consumers of
> inode without sb" is probably worth the overhead of an extra function
> call. So, I don't strongly feel about the above... maybe you are right :)
>
> Regards,
> Tigran
>
>

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