David Herrmann 31bbe16f6d drm: add pseudo filesystem for shared inodes ... Our current DRM design uses a single address_space for all users of the same DRM device. However, there is no way to create an anonymous address_space without an underlying inode. Therefore, we wait for the first ->open() callback on a registered char-dev and take-over the inode of the char-dev. This worked well so far, but has several drawbacks: - We screw with FS internals and rely on some non-obvious invariants like inode->i_mapping being the same as inode->i_data for char-devs. - We don't have any address_space prior to the first ->open() from user-space. This leads to ugly fallback code and we cannot allocate global objects early. As pointed out by Al-Viro, fs/anon_inode.c is *not* supposed to be used by drivers for anonymous inode-allocation. Therefore, this patch follows the proposed alternative solution and adds a pseudo filesystem mount-point to DRM. We can then allocate private inodes including a private address_space for each DRM device at initialization time. Note that we could use: sysfs_get_inode(sysfs_mnt->mnt_sb, drm_device->dev->kobj.sd); to get access to the underlying sysfs-inode of a "struct device" object. However, most of this information is currently hidden and it's not clear whether this address_space is suitable for driver access. Thus, unless linux allows anonymous address_space objects or driver-core provides a public inode per device, we're left with our own private internal mount point. Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David Herrmann <dh.herrmann@gmail.com>		2014-03-16 12:17:03 +01:00
..
9p	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-01-28 08:38:04 -08:00
adfs	…
affs	affs: use ->kill_sb() to simplify ->put_super() and failure exits of ->mount()	2014-01-25 03:13:01 -05:00
afs	afs: proc cells and rootcell are writeable	2014-02-01 10:59:39 -08:00
autofs4	autofs: fix symlinks aren't checked for expiry	2014-01-23 16:36:59 -08:00
befs	befs: iget_locked() doesn't return an ERR_PTR	2014-01-25 03:14:38 -05:00
bfs	…
btrfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2014-02-16 11:05:27 -08:00
cachefiles	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-11-13 15:34:18 +09:00
ceph	ceph: fix __dcache_readdir()	2014-02-17 12:37:13 -08:00
cifs	Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6	2014-02-17 13:50:11 -08:00
coda	coda_revalidate_inode(): switch to passing inode...	2013-11-09 00:16:21 -05:00
configfs	configfs: fix race between dentry put and lookup	2013-11-21 16:42:27 -08:00
cramfs	cramfs: take headers to fs/cramfs	2014-01-25 03:13:02 -05:00
debugfs	debugfs: use list_next_entry() in debugfs_remove_recursive()	2013-11-13 12:09:24 +09:00
devpts	devpts: plug the memory leak in kill_sb	2013-11-13 12:09:36 +09:00
dlm	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-01-25 11:17:34 -08:00
ecryptfs	ecryptfs: fix failure handling in ->readlink()	2014-01-25 03:13:00 -05:00
efivarfs	consolidate simple ->d_delete() instances	2013-11-15 22:04:17 -05:00
efs	efs: get rid of ->put_super()	2014-01-25 03:13:02 -05:00
exofs	exofs: Print less in r4w	2014-01-23 18:54:14 +02:00
exportfs	exportfs: fix quadratic behavior in filehandle lookup	2013-11-09 00:16:38 -05:00
ext2	ext2/3/4: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00
ext3	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-01-28 08:38:04 -08:00
ext4	ext4: don't leave i_crtime.tv_sec uninitialized	2014-02-16 19:29:32 -05:00
f2fs	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	2014-01-30 11:19:05 -08:00
fat	…
freevxfs	…
fscache	FS-Cache: Handle removal of unadded object to the fscache_object_list rb tree	2014-02-17 13:47:35 -08:00
fuse	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-01-28 08:38:04 -08:00
gfs2	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	2014-01-30 11:19:05 -08:00
hfs	fs/hfs/btree.h: remove duplicate defines	2013-11-13 12:09:32 +09:00
hfsplus	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-02-01 10:43:45 -08:00
hostfs	um: hostfs: make functions static	2014-01-26 11:51:09 +01:00
hpfs	hpfs: optimize quad buffer loading	2014-02-02 16:24:07 -08:00
hppfs	…
hugetlbfs	…
isofs	…
jbd	jbd: Revise KERN_EMERG error messages	2013-12-04 12:27:46 +01:00
jbd2	jbd2: fix use after free in jbd2_journal_start_reserved()	2014-02-17 20:33:01 -05:00
jffs2	MTD updates for 3.14:	2014-01-28 18:56:37 -08:00
jfs	jfs: set i_ctime when setting ACL	2014-02-13 15:56:05 -06:00
kernfs	kernfs: make kernfs_deactivate() honor KERNFS_LOCKDEP flag	2014-02-05 11:44:04 -08:00
lockd	lockd: send correct lock when granting a delayed lock.	2014-02-13 14:55:02 -05:00
logfs	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	2014-01-30 11:19:05 -08:00
minix	…
ncpfs	…
nfs	Merge branch 'for-3.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2014-02-20 12:01:09 -08:00
nfs_common	…
nfsd	nfsd4: fix acl buffer overrun	2014-02-11 13:48:11 -05:00
nilfs2	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	2014-01-30 11:19:05 -08:00
nls	nls: have register_nls() set ->owner	2014-01-25 03:14:05 -05:00
notify	fanotify: Fix use after free for permission events	2014-01-29 13:57:17 +01:00
ntfs	fix O_SYNC|O_APPEND syncing the wrong range on write()	2014-02-09 15:18:09 -05:00
ocfs2	ocfs2: check existence of old dentry in ocfs2_link()	2014-02-10 16:01:43 -08:00
omfs	…
openpromfs	…
proc	vmcore: prevent PT_NOTE p_memsz overflow during header update	2014-02-10 16:01:40 -08:00
pstore	pstore: Don't allow high traffic options on fragile devices	2013-12-20 13:12:01 -08:00
qnx4	qnx4: clean qnx4_fill_super() up	2014-01-25 03:13:03 -05:00
qnx6	…
quota	genetlink: make multicast groups const, prevent abuse	2013-11-19 16:39:06 -05:00
ramfs	fs/ramfs: move ramfs_aops to inode.c	2014-01-23 16:36:58 -08:00
reiserfs	reiserfs: fix utterly brain-damaged indentation.	2014-02-17 13:46:33 -08:00
romfs	romfs: fix returm err while getting inode in fill_super	2014-01-23 16:37:04 -08:00
squashfs	Squashfs: fix failure to unlock pages on decompress error	2013-11-24 01:02:50 +00:00
sysfs	Revert "kernfs, sysfs, driver-core: implement kernfs_remove_self() and its wrappers"	2014-01-13 14:05:13 -08:00
sysv	…
ubifs	fs/ubifs: use rbtree postorder iteration helper instead of opencoding	2014-01-23 16:37:03 -08:00
udf	udf: Fix lockdep warning from udf_symlink()	2013-12-23 22:02:16 +01:00
ufs	…
xfs	Merge branch 'xfs-fixes-for-3.14-rc4' of git://oss.sgi.com/xfs/xfs	2014-02-22 08:26:01 -08:00
Kconfig	fs: remove generic_acl	2014-01-26 08:26:40 -05:00
Kconfig.binfmt	…
Makefile	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-01-28 08:38:04 -08:00
aio.c	Merge git://git.kvack.org/~bcrl/aio-next	2013-12-22 11:03:49 -08:00
anon_inodes.c	... and kill anon_inode_getfile_private()	2013-11-09 00:16:28 -05:00
attr.c	fs: fix iversion handling	2013-12-05 16:36:21 -06:00
bad_inode.c	…
binfmt_aout.c	dump_skip(): dump_seek() replacement taking coredump_params	2013-11-09 00:16:26 -05:00
binfmt_elf.c	fs: binfmt_elf: remove unused defines INTERPRETER_NONE and INTERPRETER_ELF	2014-01-23 16:36:58 -08:00
binfmt_elf_fdpic.c	elf{,_fdpic} coredump: get rid of pointless if (siginfo->si_signo)	2013-11-09 00:16:30 -05:00
binfmt_em86.c	…
binfmt_flat.c	…
binfmt_misc.c	…
binfmt_script.c	…
binfmt_som.c	…
bio-integrity.c	fs: Mark function as static in fs/bio-integrity.c	2014-02-09 13:56:23 -07:00
bio.c	block: Fix cloning of discard/write same bios	2014-02-11 08:40:45 -07:00
block_dev.c	…
buffer.c	mm: __set_page_dirty uses spin_lock_irqsave instead of spin_lock_irq	2014-02-06 13:48:51 -08:00
char_dev.c	Merge branch 'for-3.13/core' of git://git.kernel.dk/linux-block	2013-11-14 12:08:14 +09:00
compat.c	…
compat_binfmt_elf.c	…
compat_ioctl.c	fs/compat_ioctl.c: fix an underflow issue (harmless)	2014-01-21 16:19:42 -08:00
coredump.c	coredump: make __get_dumpable/get_dumpable inline, kill fs/coredump.h	2014-01-23 16:37:01 -08:00
dcache.c	drm: add pseudo filesystem for shared inodes	2014-03-16 12:17:03 +01:00
dcookies.c	fs/compat: fix lookup_dcookie() parameter handling	2014-01-29 16:22:40 -08:00
direct-io.c	block: Abstract out bvec iterator	2013-11-23 22:33:47 -08:00
drop_caches.c	…
eventfd.c	eventfd_ctx_fdget(): use fdget() instead of fget()	2014-01-25 03:13:04 -05:00
eventpoll.c	epoll: do not take the nested ep->mtx on EPOLL_CTL_DEL	2014-01-02 14:40:30 -08:00
exec.c	execve: use 'struct filename *' for executable name passing	2014-02-05 12:54:53 -08:00
fcntl.c	…
fhandle.c	…
file.c	fs/file.c:fdtable: avoid triggering OOMs from alloc_fdmem	2014-02-10 16:01:41 -08:00
file_table.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-11-13 15:34:18 +09:00
filesystems.c	…
fs-writeback.c	writeback: Fix data corruption on NFS	2013-12-14 04:21:26 +08:00
fs_struct.c	…
inode.c	locks: break delegations on any attribute modification	2013-11-09 00:16:44 -05:00
internal.h	get rid of s_files and files_lock	2013-11-09 00:16:20 -05:00
ioctl.c	…
ioprio.c	…
libfs.c	consolidate simple ->d_delete() instances	2013-11-15 22:04:17 -05:00
locks.c	locks: missing unlock on error in generic_add_lease()	2013-11-13 07:30:53 -05:00
mbcache.c	…
mount.h	vfs: Is mounted should be testing mnt_ns for NULL or error.	2014-01-26 08:26:42 -05:00
mpage.c	block: Abstract out bvec iterator	2013-11-23 22:33:47 -08:00
namei.c	execve: use 'struct filename *' for executable name passing	2014-02-05 12:54:53 -08:00
namespace.c	Driver core / sysfs patches for 3.14-rc1	2014-01-20 15:49:44 -08:00
no-block.c	…
open.c	locks: break delegations on any attribute modification	2013-11-09 00:16:44 -05:00
pipe.c	fs/pipe.c: skip file_update_time on frozen fs	2014-01-23 16:37:00 -08:00
pnode.c	…
pnode.h	…
posix_acl.c	fs: get_acl() must be allowed to return EOPNOTSUPP	2014-02-03 17:12:37 -05:00
proc_namespace.c	fs/proc_namespace.c: simplify testing nsp and nsp->mnt_ns	2014-01-23 16:37:02 -08:00
read_write.c	fs/compat: fix parameter handling for compat readv/writev syscalls	2014-01-29 16:22:39 -08:00
readdir.c	…
select.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-11-13 15:34:18 +09:00
seq_file.c	seq_file: always clear m->count when we free m->buf	2013-11-18 19:07:53 -08:00
signalfd.c	…
splice.c	fuse: fix pipe_buf_operations	2014-01-22 19:36:57 +01:00
stack.c	…
stat.c	vfs: split out vfs_getattr_nosec	2013-11-09 00:16:31 -05:00
statfs.c	…
super.c	fs/super.c: sync ro remount after blocking writers	2014-01-31 14:29:36 -05:00
sync.c	fix O_SYNC|O_APPEND syncing the wrong range on write()	2014-02-09 15:18:09 -05:00
timerfd.c	…
utimes.c	locks: break delegations on any attribute modification	2013-11-09 00:16:44 -05:00
xattr.c	…