Re: linux-next: manual merge of the vfs-scale tree with Linus' tree

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[cc'ing Christoph properly this time.  The author field in the commit in
Liunus' tree has an unqualified email address which I copy-and-pasted ...]

On Fri, 31 Dec 2010 10:54:32 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> Today's linux-next merge of the vfs-scale tree got a conflict in
> Documentation/filesystems/Locking between commit
> b83be6f20a0e468f715b14225c9f897538dfe5ad ("update
> Documentation/filesystems/Locking") from Linus' tree and various commits
> from the vfs-scale tree.
> 
> I fixed it up (as best I could - see below) and can carry the fix as
> necessary.
> -- 
> Cheers,
> Stephen Rothwell                    sfr@xxxxxxxxxxxxxxxx
> 
> diff --cc Documentation/filesystems/Locking
> index 7686e76,c1a7e72..0000000
> --- a/Documentation/filesystems/Locking
> +++ b/Documentation/filesystems/Locking
> @@@ -18,13 -22,15 +22,14 @@@ prototypes
>   	char *(*d_dname)((struct dentry *dentry, char *buffer, int buflen);
>   
>   locking rules:
> - 		dcache_lock	rename_lock	->d_lock	may block
> - d_revalidate:	no		no		no		yes
> - d_hash		no		no		no		yes
> - d_compare:	no		yes		no		no 
> - d_delete:	yes		no		yes		no
> - d_release:	no		no		no		yes
> - d_iput:		no		no		no		yes
>  -	none have BKL
> + 		rename_lock	->d_lock	may block	rcu-walk
> + d_revalidate:	no		no		yes		no
> + d_revalidate_rcu:no		no		yes (ref-walk)	maybe
> + d_hash		no		no		no		maybe
> + d_compare:	yes		no		no		maybe
> + d_delete:	no		yes		no		no
> + d_release:	no		no		yes		no
> + d_iput:		no		no		yes		no
>   d_dname:	no		no		no		no
>   
>   --------------------------- inode_operations --------------------------- 
> @@@ -41,11 -47,12 +46,13 @@@ ata *)
>   	int (*rename) (struct inode *, struct dentry *,
>   			struct inode *, struct dentry *);
>   	int (*readlink) (struct dentry *, char __user *,int);
>  -	int (*follow_link) (struct dentry *, struct nameidata *);
>  +	void * (*follow_link) (struct dentry *, struct nameidata *);
>  +	void (*put_link) (struct dentry *, struct nameidata *, void *);
>   	void (*truncate) (struct inode *);
> - 	int (*permission) (struct inode *, int, struct nameidata *);
> + 	int (*permission) (struct inode *, int);
> + 	int (*permission_rcu) (struct inode *, int, unsigned int);
>   	int (*check_acl)(struct inode *, int);
> + 	int (*check_acl_rcu)(struct inode *, int, unsigned int);
>   	int (*setattr) (struct dentry *, struct iattr *);
>   	int (*getattr) (struct vfsmount *, struct dentry *, struct kstat *);
>   	int (*setxattr) (struct dentry *, const char *,const void *,size_t,int);
> @@@ -74,7 -77,7 +81,8 @@@ put_link:	n
>   truncate:	yes		(see below)
>   setattr:	yes
>   permission:	no
> + permission_rcu: no (may not block if called in rcu-walk mode)
>  +check_acl:	no
>   getattr:	no
>   setxattr:	yes
>   getxattr:	no


-- 
Cheers,
Stephen Rothwell                    sfr@xxxxxxxxxxxxxxxx
http://www.canb.auug.org.au/~sfr/

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