redonkable/alistair23-linux
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alistair23-linux/fs
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Amir Goldstein b1f9d3858f ovl: use ovl_inode_lock in ovl_llseek() 
In ovl_llseek() we use the overlay inode rwsem to protect against
concurrent modifications to real file f_pos, because we copy the overlay
file f_pos to/from the real file f_pos.

This caused a lockdep warning of locking order violation when the
ovl_llseek() operation was called on a lower nested overlay layer while the
upper layer fs sb_writers is held (with patch improving copy-up efficiency
for big sparse file).

Use the internal ovl_inode_lock() instead of the overlay inode rwsem in
those cases. It is meant to be used for protecting against concurrent
changes to overlay inode internal state changes.

The locking order rules are documented to explain this case.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2020-01-22 20:11:41 +01:00
..
9p 9p pull request for inclusion in 5.4 2019-09-27 15:10:34 -07:00
adfs
affs affs: fix a memory leak in affs_remount 2019-11-18 14:26:43 +01:00
afs Merge branch 'dhowells' (patches from DavidH) 2020-01-14 09:56:31 -08:00
autofs Merge branch 'next.autofs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-12-05 17:11:48 -08:00
befs
bfs
btrfs for-5.5-rc6-tag 2020-01-17 11:21:05 -08:00
cachefiles
ceph ceph: add more debug info when decoding mdsmap 2019-12-09 20:55:10 +01:00
cifs cifs: Optimize readdir on reparse points 2019-12-23 09:04:44 -06:00
coda y2038: add inode timestamp clamping 2019-09-19 09:42:37 -07:00
configfs configfs: calculate the depth of parent item 2019-11-06 18:36:01 +01:00
cramfs cramfs: fix usage on non-MTD device 2019-11-23 21:44:49 -05:00
crypto treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
debugfs Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-12-06 09:06:58 -08:00
devpts devpts_pty_kill(): don't bother with d_delete() 2019-09-03 09:30:56 -04:00
dlm
ecryptfs compat_ioctl: remove most of fs/compat_ioctl.c 2019-12-01 13:46:15 -08:00
efivarfs
efs
erofs Changes since last update: 2019-12-11 12:25:32 -08:00
exportfs race in exportfs_decode_fh() 2019-11-11 09:21:59 -05:00
ext2 \n 2019-11-30 11:16:07 -08:00
ext4 Ext4 bug fixes (including a regression fix) for 5.5 2019-12-22 10:41:48 -08:00
f2fs compat_ioctl: remove most of fs/compat_ioctl.c 2019-12-01 13:46:15 -08:00
fat compat_ioctl: move drivers to compat_ptr_ioctl 2019-10-23 17:23:43 +02:00
freevxfs
fscache
fuse fuse: fix fuse_send_readpages() in the syncronous read case 2020-01-16 11:09:36 +01:00
gfs2 GFS2 changes for this merge window: 2019-12-05 13:20:11 -08:00
hfs
hfsplus
hostfs
hpfs fs: compat_ioctl: move FITRIM emulation into file systems 2019-10-23 17:23:46 +02:00
hugetlbfs mm/hugetlbfs: fix for_each_hstate() loop in init_hugetlbfs_fs() 2020-01-03 10:39:08 -08:00
iomap iomap: stop using ioend after it's been freed in iomap_finish_ioend() 2019-12-05 07:41:16 -08:00
isofs y2038: add inode timestamp clamping 2019-09-19 09:42:37 -07:00
jbd2 This merge window saw the the following new featuers added to ext4: 2019-11-30 10:53:02 -08:00
jffs2 Revert "jffs2: Fix possible null-pointer dereferences in jffs2_add_frag_to_fragtree()" 2019-11-29 11:29:58 +01:00
jfs y2038: add inode timestamp clamping 2019-09-19 09:42:37 -07:00
kernfs Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-12-06 09:06:58 -08:00
lockd NFSv4.1: Don't rebind to the same source port when reconnecting to the server 2019-11-03 21:28:45 -05:00
minix
nfs reimplement path_mountpoint() with less magic 2020-01-15 01:36:06 -05:00
nfs_common
nfsd This is a relatively quiet cycle for nfsd, mainly various bugfixes. 2019-12-07 16:56:00 -08:00
nilfs2 fs: compat_ioctl: move FITRIM emulation into file systems 2019-10-23 17:23:46 +02:00
nls
notify fs: call fsnotify_sb_delete after evict_inodes 2019-12-18 00:03:01 -05:00
ntfs ntfs: remove (un)?likely() from IS_ERR() conditions 2019-09-26 10:10:44 -07:00
ocfs2 ocfs2: fix the crash due to call ocfs2_get_dlm_debug once less 2020-01-04 13:55:09 -08:00
omfs
openpromfs
orangefs orangefs: posix open permission checking... 2019-12-04 08:52:55 -05:00
overlayfs ovl: use ovl_inode_lock in ovl_llseek() 2020-01-22 20:11:41 +01:00
proc sched/cputime, proc/stat: Fix incorrect guest nice cpustat value 2019-12-11 07:09:58 +01:00
pstore pstore/ram: Regularize prz label allocation lifetime 2020-01-08 17:05:45 -08:00
qnx4
qnx6
quota fs: avoid softlockups in s_inodes iterators 2019-12-18 00:03:01 -05:00
ramfs vfs: Convert ramfs, shmem, tmpfs, devtmpfs, rootfs to use the new mount API 2019-09-12 21:05:34 -04:00
reiserfs reiserfs: replace open-coded atomic_dec_and_mutex_lock() 2019-11-05 12:25:22 +01:00
romfs Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-09-19 10:06:57 -07:00
squashfs Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-09-19 10:06:57 -07:00
sysfs
sysv
tracefs tracing: Do not create tracefs files if tracefs lockdown is in effect 2019-10-12 20:49:07 -04:00
ubifs ubifs: ubifs_tnc_start_commit: Fix OOB in layout_in_gaps 2019-11-17 22:22:54 +01:00
udf fs-udf: Delete an unnecessary check before brelse() 2019-09-04 18:19:43 +02:00
ufs y2038: add inode timestamp clamping 2019-09-19 09:42:37 -07:00
unicode unicode: make array 'token' static const, makes object smaller 2019-09-17 11:48:24 -04:00
verity treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
xfs xfs: Make the symbol 'xfs_rtalloc_log_count' static 2019-12-20 08:07:31 -08:00
aio.c y2038: syscall implementation cleanups 2019-12-01 14:00:59 -08:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf.c fs/binfmt_elf.c: extract elf_read() function 2019-12-04 19:44:13 -08:00
binfmt_elf_fdpic.c y2038: elfcore: Use __kernel_old_timeval for process times 2019-11-15 14:38:29 +01:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
block_dev.c block: don't send uevent for empty disk when not invalidating 2019-12-02 18:49:30 -07:00
buffer.c fs: move guard_bio_eod() after bio_set_op_attrs 2020-01-09 08:16:12 -07:00
char_dev.c chardev: Avoid potential use-after-free in 'chrdev_open()' 2020-01-06 20:10:26 +01:00
compat.c
compat_binfmt_elf.c y2038: elfcore: Use __kernel_old_timeval for process times 2019-11-15 14:38:29 +01:00
compat_ioctl.c New code for 5.5: 2019-12-02 14:46:22 -08:00
coredump.c
d_path.c
dax.c New code for 5.5: 2019-11-30 10:44:49 -08:00
dcache.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-12-08 11:08:28 -08:00
dcookies.c
direct-io.c fs/direct-io.c: include fs/internal.h for missing prototype 2020-01-04 13:55:09 -08:00
drop_caches.c fs: avoid softlockups in s_inodes iterators 2019-12-18 00:03:01 -05:00
eventfd.c
eventpoll.c fs/epoll: remove unnecessary wakeups of nested epoll 2019-12-04 19:44:13 -08:00
exec.c Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-12-03 12:20:25 -08:00
fcntl.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-12-08 11:08:28 -08:00
fhandle.c
file.c Revert "fs: remove ksys_dup()" 2020-01-02 16:15:33 -08:00
file_table.c
filesystems.c
fs-writeback.c cgroup,writeback: don't switch wbs immediately on dead wbs if the memcg is dead 2019-11-08 13:37:24 -07:00
fs_context.c vfs: subtype handling moved to fuse 2019-09-06 21:28:49 +02:00
fs_parser.c vfs: Make fs_parse() handle fs_param_is_fd-type params better 2019-09-12 21:06:14 -04:00
fs_pin.c
fs_struct.c
fs_types.c
fsopen.c
inode.c fs: avoid softlockups in s_inodes iterators 2019-12-18 00:03:01 -05:00
internal.h fs: move guard_bio_eod() after bio_set_op_attrs 2020-01-09 08:16:12 -07:00
io-wq.c io-wq: cancel work if we fail getting a mm reference 2020-01-14 22:06:11 -07:00
io-wq.h io-wq: re-add io_wq_current_is_worker() 2019-12-17 19:57:20 -07:00
io_uring.c io_uring: only allow submit from owning task 2020-01-16 21:43:24 -07:00
ioctl.c New code for 5.5: 2019-12-02 14:46:22 -08:00
Kconfig io-wq: small threadpool implementation for io_uring 2019-10-29 12:43:00 -06:00
Kconfig.binfmt
libfs.c fs/libfs.c: fix kernel-doc warning 2019-10-14 15:04:01 -07:00
locks.c locks: print unsigned ino in /proc/locks 2019-12-29 09:00:58 -05:00
Makefile io-wq: small threadpool implementation for io_uring 2019-10-29 12:43:00 -06:00
mbcache.c
mount.h
mpage.c fs: move guard_bio_eod() after bio_set_op_attrs 2020-01-09 08:16:12 -07:00
namei.c fix autofs regression caused by follow_managed() changes 2020-01-15 01:36:46 -05:00
namespace.c fs/namespace.c: make to_mnt_ns() static 2020-01-04 13:55:09 -08:00
no-block.c
nsfs.c fs/nsfs.c: include headers for missing declarations 2020-01-04 13:55:09 -08:00
open.c Revert "vfs: properly and reliably lock f_pos in fdget_pos()" 2019-11-26 11:34:06 -08:00
pipe.c pipe: fix empty pipe check in pipe_write() 2019-12-22 09:47:47 -08:00
pnode.c
pnode.h
posix_acl.c fs/posix_acl.c: fix kernel-doc warnings 2020-01-04 13:55:09 -08:00
proc_namespace.c vfs: subtype handling moved to fuse 2019-09-06 21:28:49 +02:00
read_write.c
readdir.c filldir[64]: remove WARN_ON_ONCE() for bad directory entries 2019-10-18 18:41:16 -04:00
select.c y2038: syscalls: change remaining timeval to __kernel_old_timeval 2019-11-15 14:38:29 +01:00
seq_file.c
signalfd.c
splice.c pipe: remove 'waiting_writers' merging logic 2019-12-07 13:21:01 -08:00
stack.c
stat.c
statfs.c vfs: Fix EOVERFLOW testing in put_compat_statfs64 2019-10-03 14:21:35 -07:00
super.c fs: call fsnotify_sb_delete after evict_inodes 2019-12-18 00:03:01 -05:00
sync.c
timerfd.c y2038: timerfd: Use timespec64 internally 2019-11-15 14:38:30 +01:00
userfaultfd.c Merge branch 'akpm' (patches from Andrew) 2019-12-01 20:36:41 -08:00
utimes.c y2038: syscalls: change remaining timeval to __kernel_old_timeval 2019-11-15 14:38:29 +01:00
xattr.c