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| author | Tejun Heo <tj@kernel.org> | 2014-04-09 11:07:30 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-25 11:43:31 -0700 |
| commit | 7d568a8383bbb9c1f5167781075906acb2bb1550 (patch) | |
| tree | f25a2d70ce8851e991a53ed6391c899320f097a6 /fs/kernfs/kernfs-internal.h | |
| parent | a798c10faf62a505d24e5f6213fbaf904a39623f (diff) | |
| download | linux-7d568a8383bbb9c1f5167781075906acb2bb1550.tar.gz linux-7d568a8383bbb9c1f5167781075906acb2bb1550.tar.bz2 linux-7d568a8383bbb9c1f5167781075906acb2bb1550.zip | |
kernfs: implement kernfs_root->supers list
Currently, there's no way to find out which super_blocks are
associated with a given kernfs_root. Let's implement it - the planned
inotify extension to kernfs_notify() needs it.
Make kernfs_super_info point back to the super_block and chain it at
kernfs_root->supers.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/kernfs/kernfs-internal.h')
| -rw-r--r-- | fs/kernfs/kernfs-internal.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h index 8be13b2a079b..dc84a3ef9ca2 100644 --- a/fs/kernfs/kernfs-internal.h +++ b/fs/kernfs/kernfs-internal.h @@ -49,6 +49,8 @@ static inline struct kernfs_root *kernfs_root(struct kernfs_node *kn) * mount.c */ struct kernfs_super_info { + struct super_block *sb; + /* * The root associated with this super_block. Each super_block is * identified by the root and ns it's associated with. @@ -62,6 +64,9 @@ struct kernfs_super_info { * an array and compare kernfs_node tag against every entry. */ const void *ns; + + /* anchored at kernfs_root->supers, protected by kernfs_mutex */ + struct list_head node; }; #define kernfs_info(SB) ((struct kernfs_super_info *)(SB->s_fs_info)) |