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authorDavid Teigland <teigland@redhat.com>2006-01-16 11:48:01 +0000
committerSteven Whitehouse <swhiteho@redhat.com>2006-01-16 15:50:40 +0000
commitfba7b940194465ac7a8f0cdf793959fb5fbb8834 (patch)
tree132a2af94f6e500f66080ff207f89a878ae1647f
parentb346671fa196abaf82ed3e1842f981209f7887af (diff)
[PATCH] Add fs_subsys to enable filesystems to use sysfs
This creates an "fs" subdirectory in sysfs so that GFS2 (or any other filesystem, come to that) can make use of sysfs. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
-rw-r--r--fs/namespace.c5
-rw-r--r--include/linux/fs.h3
2 files changed, 8 insertions, 0 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index 8bc15b362d2..ce97becff46 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -48,6 +48,10 @@ static int hash_mask __read_mostly, hash_bits __read_mostly;
static kmem_cache_t *mnt_cache;
static struct rw_semaphore namespace_sem;
+/* /sys/fs */
+decl_subsys(fs, NULL, NULL);
+EXPORT_SYMBOL_GPL(fs_subsys);
+
static inline unsigned long hash(struct vfsmount *mnt, struct dentry *dentry)
{
unsigned long tmp = ((unsigned long)mnt / L1_CACHE_BYTES);
@@ -1725,6 +1729,7 @@ void __init mnt_init(unsigned long mempages)
i--;
} while (i);
sysfs_init();
+ subsystem_register(&fs_subsys);
init_rootfs();
init_mount_tree();
}
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 552cedfa606..eabc80d22bb 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1293,6 +1293,9 @@ extern int vfs_statfs(struct super_block *, struct kstatfs *);
#define FLOCK_VERIFY_READ 1
#define FLOCK_VERIFY_WRITE 2
+/* /sys/fs */
+extern struct subsystem fs_subsys;
+
extern int locks_mandatory_locked(struct inode *);
extern int locks_mandatory_area(int, struct inode *, struct file *, loff_t, size_t);