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xfs: add a sysfs kset 

Create a sysfs kset to contain all sub-objects associated with the XFS
module. The kset is created and removed on module initialization and
removal respectively. The kset uses fs_obj as a parent. This leads to
the creation of a /sys/fs/xfs directory when the kset exists.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Brian Foster 2014-07-15 07:41:37 +10:00 committed by Dave Chinner
parent a70a4fa528
commit 3d8712265c
1 changed files with 11 additions and 1 deletions
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12
fs/xfs/xfs_super.c
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@ -61,6 +61,7 @@
static const struct super_operations xfs_super_operations;
static kmem_zone_t *xfs_ioend_zone;
mempool_t *xfs_ioend_pool;
struct kset *xfs_kset;
#define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
#define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
@ -1761,9 +1762,15 @@ init_xfs_fs(void)
if (error)
goto out_cleanup_procfs;
xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj);
if (!xfs_kset) {
error = -ENOMEM;
goto out_sysctl_unregister;;
}
error = xfs_qm_init();
if (error)
goto out_sysctl_unregister;
goto out_kset_unregister;
error = register_filesystem(&xfs_fs_type);
if (error)
@ -1772,6 +1779,8 @@ init_xfs_fs(void)
out_qm_exit:
xfs_qm_exit();
out_kset_unregister:
kset_unregister(xfs_kset);
out_sysctl_unregister:
xfs_sysctl_unregister();
out_cleanup_procfs:
@ -1793,6 +1802,7 @@ exit_xfs_fs(void)
{
xfs_qm_exit();
unregister_filesystem(&xfs_fs_type);
kset_unregister(xfs_kset);
xfs_sysctl_unregister();
xfs_cleanup_procfs();
xfs_buf_terminate();