diff options
| author |   Christoph Hellwig <hch@lst.de> | 2015-01-14 10:42:30 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@fb.com> | 2015-01-20 14:02:54 -0700 |
| commit | a7a2c680a2ad81b3181a335ee76e23d5195007ee (patch) | |
| tree | 6755c100ab14f95ab78eba709f2de737b16e3d02 /fs/kernfs | |
| parent | Linux 3.19-rc5 (diff) | |
| download | linux-dev-a7a2c680a2ad81b3181a335ee76e23d5195007ee.tar.xz linux-dev-a7a2c680a2ad81b3181a335ee76e23d5195007ee.zip | |
fs: deduplicate noop_backing_dev_info
hugetlbfs, kernfs and dlmfs can simply use noop_backing_dev_info instead
of creating a local duplicate.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'fs/kernfs')
| -rw-r--r-- | fs/kernfs/inode.c | 14 | ||||
| -rw-r--r-- | fs/kernfs/kernfs-internal.h | 1 | ||||
| -rw-r--r-- | fs/kernfs/mount.c | 1 |
3 files changed, 1 insertions, 15 deletions
diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c index 985217626e66..06f06887b2d2 100644 --- a/fs/kernfs/inode.c +++ b/fs/kernfs/inode.c @@ -24,12 +24,6 @@ static const struct address_space_operations kernfs_aops = { .write_end = simple_write_end, }; -static struct backing_dev_info kernfs_bdi = { - .name = "kernfs", - .ra_pages = 0, /* No readahead */ - .capabilities = BDI_CAP_NO_ACCT_AND_WRITEBACK, -}; - static const struct inode_operations kernfs_iops = { .permission = kernfs_iop_permission, .setattr = kernfs_iop_setattr, @@ -40,12 +34,6 @@ static const struct inode_operations kernfs_iops = { .listxattr = kernfs_iop_listxattr, }; -void __init kernfs_inode_init(void) -{ - if (bdi_init(&kernfs_bdi)) - panic("failed to init kernfs_bdi"); -} - static struct kernfs_iattrs *kernfs_iattrs(struct kernfs_node *kn) { static DEFINE_MUTEX(iattr_mutex); @@ -298,7 +286,7 @@ static void kernfs_init_inode(struct kernfs_node *kn, struct inode *inode) kernfs_get(kn); inode->i_private = kn; inode->i_mapping->a_ops = &kernfs_aops; - inode->i_mapping->backing_dev_info = &kernfs_bdi; + inode->i_mapping->backing_dev_info = &noop_backing_dev_info; inode->i_op = &kernfs_iops; set_default_inode_attr(inode, kn->mode); diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h index dc84a3ef9ca2..af9fa7499919 100644 --- a/fs/kernfs/kernfs-internal.h +++ b/fs/kernfs/kernfs-internal.h @@ -88,7 +88,6 @@ int kernfs_iop_removexattr(struct dentry *dentry, const char *name); ssize_t kernfs_iop_getxattr(struct dentry *dentry, const char *name, void *buf, size_t size); ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size); -void kernfs_inode_init(void); /* * dir.c diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c index f973ae9b05f1..8eaf417187f1 100644 --- a/fs/kernfs/mount.c +++ b/fs/kernfs/mount.c @@ -246,5 +246,4 @@ void __init kernfs_init(void) kernfs_node_cache = kmem_cache_create("kernfs_node_cache", sizeof(struct kernfs_node), 0, SLAB_PANIC, NULL); - kernfs_inode_init(); } |