On Thu, Nov 09, 2006 at 10:24:39AM -0500, Jeff Layton wrote:
> +/**
> + * new_inode_autonum - obtain an inode with a unique i_ino value
> + * @sb: superblock
> + *
> + * Allocates a new inode for given superblock. Ensures that i_ino is
> + * unique on the filesystem.
> + */
> +struct inode *new_inode_autonum(struct super_block *sb)
> +{
> + struct inode *inode;
> +
> + inode = __new_inode(sb);
> + inode->i_ino = iunique(sb, 0);
> + return inode;
Why do we need this wrapper? The callers could aswell just do the
iunique call themselves. It's already exported aswell.
> +/**
> + * new_inode - obtain an inode -- i_ino not guaranteed unique
> + * @sb: superblock
> + *
> + * Allocates a new inode for given superblock. i_ino is not guaranteed to
> + * be unique. Should only be used when i_ino is going to be clobbered.
> + */
> +struct inode *new_inode(struct super_block *sb)
> +{
> + struct inode *inode;
> +
> + inode = __new_inode(sb);
> + inode->i_ino = 0; /* 0 to try to catch callers that don't reset it */
> + return inode;
And this wrapper is rather pointless as inode_init_once already zeroes the
whole inode. Just keep the name new_inode for the basic don't assigned
inode number thing.
> --- a/include/linux/fs.h
> +++ b/include/linux/fs.h
> @@ -961,6 +961,14 @@ #endif
> /* Granularity of c/m/atime in ns.
> Cannot be worse than a second */
> u32 s_time_gran;
> +
> + /* per-sb inode counter for new_inode. Make it a 32-bit counter when
> + we have the possibility of dealing with 32-bit apps */
> +#ifdef CONFIG_COMPAT
> + unsigned int s_nextino;
> +#else
> + unsigned long s_nextino;
> +#endif
This is more thanb ugly. CONFIG_COMPAT should not modify core kernel
behaviour. It's also short sightened as we once again plan to support
64bit inode numbers on 32bit hosts.
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