to den 01.09.2005 Klokka 20:45 (-0700) skreiv Andrew Morton:
> Trond Myklebust <[email protected]> wrote:
> >
> > +static inline int do_posix_truncate(struct dentry *dentry, loff_t length)
> > +{
> > + /* In SuS/Posix lore, truncate to the current file size is a no-op */
> > + if (length == i_size_read(dentry->d_inode))
> > + return 0;
> > + return do_truncate(dentry, length);
> > +}
>
> We have the same optimisation in inode_setattr()...
Look again. The two are NOT the same.
The code in inode_setattr() will cause truncate() to erroneously update
the ctime/mtime.
Cheers,
Trond
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