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Linus Torvalds 14e3e989f6 proc mountinfo: make splice available again 
Since commit 36e2c7421f ("fs: don't allow splice read/write without
explicit ops") we've required that file operation structures explicitly
enable splice support, rather than falling back to the default handlers.

Most /proc files use the indirect 'struct proc_ops' to describe their
file operations, and were fixed up to support splice earlier in commits
40be821d627c..b24c30c67863, but the mountinfo files interact with the
VFS directly using their own 'struct file_operations' and got missed as
a result.

This adds the necessary support for splice to work for /proc/*/mountinfo
and friends.

Reported-by: Joan Bruguera Micó <joanbrugueram@gmail.com>
Reported-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=209971
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-27 12:00:36 -08:00
..
9p 9p for 5.11-rc1 2020-12-21 10:28:02 -08:00
adfs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
affs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
afs afs: Fix memory leak when mounting with multiple source parameters 2020-12-08 15:59:25 -08:00
autofs file: Replace ksys_close with close_fd 2020-12-10 12:42:59 -06:00
befs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
bfs bfs: don't use WARNING: string when it's just info. 2020-12-15 22:46:18 -08:00
btrfs for-5.11/block-2020-12-14 2020-12-16 12:57:51 -08:00
cachefiles cachefiles: Handle readpage error correctly 2020-10-26 10:42:54 -07:00
ceph libceph, ceph: make use of __ceph_auth_get_authorizer() in msgr1 2020-12-14 23:21:50 +01:00
cifs Add SMB 2 support for getting and setting SACLs 2020-12-18 23:32:04 -06:00
coda
configfs configfs: fix kernel-doc markup issue 2020-11-14 10:22:45 +01:00
cramfs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
crypto f2fs-for-5.11-rc1 2020-12-17 11:18:00 -08:00
debugfs debugfs: remove return value of debugfs_create_devm_seqfile() 2020-10-30 08:37:39 +01:00
devpts
dlm fs: dlm: check on existing node address 2020-11-10 12:14:20 -06:00
ecryptfs mm, treewide: rename kzfree() to kfree_sensitive() 2020-08-07 11:33:22 -07:00
efivarfs efivarfs: revert "fix memory leak in efivarfs_create()" 2020-11-25 16:55:02 +01:00
efs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
erofs erofs: avoid using generic_block_bmap 2020-12-10 11:07:40 +08:00
exfat exfat: Avoid allocating upcase table using kcalloc() 2020-12-22 12:31:17 +09:00
exportfs exportfs: Add a function to return the raw output from fh_to_dentry() 2020-12-09 09:39:38 -05:00
ext2 ext2: Fix fall-through warnings for Clang 2020-11-23 10:36:53 +01:00
ext4 Various bug fixes and cleanups for ext4; no new features this cycle. 2020-12-24 14:16:02 -08:00
f2fs f2fs-for-5.11-rc1 2020-12-17 11:18:00 -08:00
fat [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
freevxfs
fscache
fuse fuse: fix bad inode 2020-12-10 15:33:14 +01:00
gfs2 gfs2: in signal_our_withdraw wait for unfreeze of _this_ fs only 2020-12-03 17:04:41 +01:00
hfs fs: Replace zero-length array with flexible-array member 2020-10-29 17:22:59 -05:00
hfsplus fs: Replace zero-length array with flexible-array member 2020-10-29 17:22:59 -05:00
hostfs fix hostfs_open() use of ->f_path.dentry 2020-12-21 21:42:29 -05:00
hpfs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
hugetlbfs hugetlbfs: prevent filesystem stacking of hugetlbfs 2020-08-12 10:57:56 -07:00
iomap mm: memcontrol: Use helpers to read page's memcg data 2020-12-02 18:28:05 -08:00
isofs fs: Replace zero-length array with flexible-array member 2020-10-29 17:22:59 -05:00
jbd2 jbd2: add a helper to find out number of fast commit blocks 2020-12-17 13:30:45 -05:00
jffs2 jffs2: Fix NULL pointer dereference in rp_size fs option parsing 2020-12-13 21:57:21 +01:00
jfs jfs: Fix array index bounds check in dbAdjTree 2020-11-13 16:03:07 -06:00
kernfs fs/kernfs: remove the double check of dentry->inode 2020-12-09 19:03:49 +01:00
lockd fs/lockd: convert comma to semicolon 2020-12-16 07:57:37 -05:00
minix [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
nfs NFS client updates for Linux 5.11 2020-12-17 12:15:03 -08:00
nfs_common nfs_common: need lock during iterate through the list 2020-12-09 09:38:34 -05:00
nfsd \n 2020-12-17 10:56:27 -08:00
nilfs2 fs/nilfs2: remove some unused macros to tame gcc 2020-12-15 22:46:17 -08:00
nls
notify \n 2020-12-17 10:56:27 -08:00
ntfs fs/ntfs: remove unused variable attr_len 2020-12-15 12:13:37 -08:00
ocfs2 ocfs2: ratelimit the 'max lookup times reached' notice 2020-12-15 12:13:37 -08:00
omfs fs: omfs: use kmemdup() rather than kmalloc+memcpy 2020-09-22 23:39:45 -04:00
openpromfs
orangefs orangefs: add splice file operations 2020-12-16 16:14:08 -05:00
overlayfs ovl: unprivieged mounts 2020-12-14 15:26:14 +01:00
proc seccomp updates for v5.11-rc1 2020-12-16 11:30:10 -08:00
pstore Tracing updates for 5.11 2020-12-17 13:22:17 -08:00
qnx4 [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
qnx6 [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
quota \n 2020-12-17 11:00:37 -08:00
ramfs ramfs: fix nommu mmap with gaps in the page cache 2020-10-16 11:11:22 -07:00
reiserfs reiserfs: add check for an invalid ih_entry_count 2020-11-26 16:57:28 +01:00
romfs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
squashfs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
sysfs sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output 2020-10-02 12:02:30 +02:00
sysv [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
tracefs
ubifs This pull request contains changes for JFFS2, UBI and UBIFS: 2020-12-17 17:46:34 -08:00
udf Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
ufs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
unicode unicode: Add utf8_casefold_hash 2020-09-10 14:03:31 -07:00
vboxsf Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2020-10-15 15:11:56 -07:00
verity Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2020-12-14 12:18:19 -08:00
xfs New code for 5.11: 2020-12-18 12:50:18 -08:00
zonefs zonefs: fix page reference and BIO leak 2020-12-10 15:14:19 +09:00
aio.c Merge branch 'akpm' (patches from Andrew) 2020-12-15 12:53:37 -08:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf.c Merge branch 'exec-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2020-12-15 19:29:43 -08:00
binfmt_elf_fdpic.c binfmt_elf, binfmt_elf_fdpic: use a VMA list snapshot 2020-10-16 11:11:21 -07:00
binfmt_em86.c
binfmt_flat.c binfmt_flat: revert "binfmt_flat: don't offset the data start" 2020-08-24 08:49:13 +10:00
binfmt_misc.c
binfmt_script.c
block_dev.c block: update some copyrights 2020-12-22 08:43:06 -07:00
buffer.c for-5.11/block-2020-12-14 2020-12-16 12:57:51 -08:00
char_dev.c
compat_binfmt_elf.c elf: Expose ELF header on arch_setup_additional_pages() 2020-10-26 13:46:47 +01:00
coredump.c Merge branch 'exec-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2020-12-15 19:29:43 -08:00
d_path.c fs: fix NULL dereference due to data race in prepend_path() 2020-10-14 14:54:45 -07:00
dax.c mm: simplify follow_pte{,pmd} 2020-12-15 22:46:19 -08:00
dcache.c fs: Kill DCACHE_DONTCACHE dentry even if DCACHE_REFERENCED is set 2020-12-10 17:33:17 -05:00
dcookies.c
direct-io.c \n 2020-10-15 15:03:10 -07:00
drop_caches.c
eventfd.c eventfd: Export eventfd_ctx_do_read() 2020-11-15 09:49:10 -05:00
eventpoll.c epoll: add syscall epoll_pwait2 2020-12-19 11:18:38 -08:00
exec.c Merge branch 'parisc-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux 2020-12-16 12:10:40 -08:00
fcntl.c fcntl: Fix potential deadlock in send_sig{io, urg}() 2020-11-05 07:44:15 -05:00
fhandle.c
file.c close_range: unshare all fds for CLOSE_RANGE_UNSHARE | CLOSE_RANGE_CLOEXEC 2020-12-19 16:22:18 +01:00
file_table.c epoll: take epitem list out of struct file 2020-10-25 20:02:08 -04:00
filesystems.c
fs-writeback.c writeback: don't warn on an unregistered BDI in __mark_inode_dirty 2020-12-16 11:56:02 +01:00
fs_context.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
fs_parser.c fs_parse: mark fs_param_bad_value() as static 2020-10-13 18:38:27 -07:00
fs_pin.c
fs_struct.c vfs: Use sequence counter with associated spinlock 2020-07-29 16:14:27 +02:00
fs_types.c
fsopen.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
init.c init: add an init_dup helper 2020-08-04 21:02:38 -04:00
inode.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-12-25 10:54:29 -08:00
internal.h for-5.11/block-2020-12-14 2020-12-16 12:57:51 -08:00
io-wq.c io-wq: kill now unused io_wq_cancel_all() 2020-12-20 10:47:42 -07:00
io-wq.h io-wq: kill now unused io_wq_cancel_all() 2020-12-20 10:47:42 -07:00
io_uring.c io_uring: hold uring_lock while completing failed polled io in io_wq_submit_work() 2020-12-22 17:14:53 -07:00
ioctl.c fs: remove ksys_ioctl 2020-07-31 08:16:01 +02:00
Kconfig tmpfs: support 64-bit inums per-sb 2020-08-07 11:33:24 -07:00
Kconfig.binfmt
kernel_read_file.c fs/kernel_file_read: Add "offset" arg for partial reads 2020-10-05 13:37:04 +02:00
libfs.c f2fs-for-5.11-rc1 2020-12-17 11:18:00 -08:00
locks.c Merge branch 'exec-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2020-12-15 19:29:43 -08:00
Makefile Refactored code for 5.10: 2020-10-23 11:33:41 -07:00
mbcache.c
mount.h mnt: Use generic ns_common::count 2020-08-19 14:14:19 +02:00
mpage.c
namei.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-12-25 10:54:29 -08:00
namespace.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-12-25 10:54:29 -08:00
no-block.c
nsfs.c
open.c Merge branch 'exec-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2020-12-15 19:29:43 -08:00
pipe.c block: remove i_bdev 2020-12-01 14:53:39 -07:00
pnode.c
pnode.h fs/namespace.c: WARN if mnt_count has become negative 2020-12-10 17:33:17 -05:00
posix_acl.c
proc_namespace.c proc mountinfo: make splice available again 2020-12-27 12:00:36 -08:00
read_write.c Refactored code for 5.10: 2020-10-23 11:33:41 -07:00
readdir.c fs: remove ksys_getdents64 2020-07-31 08:16:00 +02:00
remap_range.c vfs: verify source area in vfs_dedupe_file_range_one() 2020-12-14 15:26:13 +01:00
select.c fs: Replace zero-length array with flexible-array member 2020-10-29 17:22:59 -05:00
seq_file.c fix return values of seq_read_iter() 2020-11-15 22:12:53 -05:00
signalfd.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
splice.c io_uring-5.10-2020-10-24 2020-10-24 12:40:18 -07:00
stack.c
stat.c fs: remove KSTAT_QUERY_FLAGS 2020-09-26 22:55:05 -04:00
statfs.c block: remove i_bdev 2020-12-01 14:53:39 -07:00
super.c block: remove i_bdev 2020-12-01 14:53:39 -07:00
sync.c
timerfd.c
userfaultfd.c userfaultfd: add user-mode only option to unprivileged_userfaultfd sysctl knob 2020-12-15 12:13:46 -08:00
utimes.c fs: expose utimes_common 2020-07-31 08:16:01 +02:00
xattr.c vfs: move cap_convert_nscap() call into vfs_setxattr() 2020-12-14 15:26:13 +01:00