WeiXiong Liao 17639f67c1 pstore/blk: Introduce backend for block devices ... pstore/blk is similar to pstore/ram, but uses a block device as the storage rather than persistent ram. The pstore/blk backend solves two common use-cases that used to preclude using pstore/ram: - not all devices have a battery that could be used to persist regular RAM across power failures. - most embedded intelligent equipment have no persistent ram, which increases costs, instead preferring cheaper solutions, like block devices. pstore/blk provides separate configurations for the end user and for the block drivers. User configuration determines how pstore/blk operates, such as record sizes, max kmsg dump reasons, etc. These can be set by Kconfig and/or module parameters, but module parameter have priority over Kconfig. Driver configuration covers all the details about the target block device, such as total size of the device and how to perform read/write operations. These are provided by block drivers, calling pstore_register_blkdev(), including an optional panic_write callback used to bypass regular IO APIs in an effort to avoid potentially destabilized kernel code during a panic. Signed-off-by: WeiXiong Liao <liaoweixiong@allwinnertech.com> Link: https://lore.kernel.org/lkml/20200511233229.27745-3-keescook@chromium.org/ Co-developed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Kees Cook <keescook@chromium.org>		2020-05-30 10:34:03 -07:00
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9p	9p: read only once on O_NONBLOCK	2020-03-27 09:29:56 +00:00
adfs	…
affs	…
afs	afs: Fix unpinned address list during probing	2020-03-26 16:04:29 -07:00
autofs	LOOKUP_MOUNTPOINT: fold path_mountpointat() into path_lookupat()	2020-03-13 21:08:17 -04:00
befs	…
bfs	…
btrfs	btrfs: fix missing semaphore unlock in btrfs_sync_file	2020-03-25 16:29:16 +01:00
cachefiles	…
ceph	ceph: fix snapshot directory timestamps	2020-03-30 12:42:43 +02:00
cifs	smb3: enable swap on SMB3 mounts	2020-04-10 13:32:32 -05:00
coda	…
configfs	…
cramfs	…
crypto	fscrypt updates for 5.7	2020-03-31 12:58:36 -07:00
debugfs	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2020-04-01 14:47:40 -07:00
devpts	…
dlm	…
ecryptfs	…
efivarfs	…
efs	…
erofs	…
exfat	…
exportfs	…
ext2	ext2: fix empty body warnings when -Wextra is used	2020-03-23 13:01:37 +01:00
ext4	1) Replace ext4's bmap and iopoll implementations to use iomap.	2020-04-05 10:54:03 -07:00
f2fs	f2fs-for-5.7-rc1	2020-04-07 13:48:26 -07:00
fat	…
freevxfs	…
fscache	…
fuse	…
gfs2	We've got a lot of patches (39) for this merge window. Most of these patches	2020-03-31 14:16:03 -07:00
hfs	…
hfsplus	hfsplus: fix crash and filesystem corruption when deleting files	2020-04-10 15:36:20 -07:00
hostfs	hostfs: Use kasprintf() instead of fixed buffer formatting	2020-03-29 23:23:00 +02:00
hpfs	…
hugetlbfs	hugetlbfs: Use i_mmap_rwsem to address page fault/truncate race	2020-04-02 09:35:32 -07:00
iomap	Bug fixes for 5.7:	2020-04-08 21:37:18 -07:00
isofs	…
jbd2	…
jffs2	…
jfs	…
kernfs	kernfs: Add option to enable user xattrs	2020-03-16 15:53:47 -04:00
lockd	…
minix	…
nfs	NFS client bugfix for Linux 5.7	2020-04-12 09:39:47 -07:00
nfs_common	…
nfsd	nfsd: fsnotify on rmdir under nfsd/clients/	2020-03-19 11:33:42 -04:00
nilfs2	…
nls	…
notify	fanotify: Fix the checks in fanotify_fsid_equal	2020-03-30 12:40:53 +02:00
ntfs	fs/buffer: Make BH_Uptodate_Lock bit_spin_lock a regular spinlock_t	2020-03-28 13:21:08 +01:00
ocfs2	ocfs2: no need try to truncate file beyond i_size	2020-04-10 15:36:21 -07:00
omfs	…
openpromfs	…
orangefs	orangefs: don't mess with I_DIRTY_TIMES in orangefs_flush	2020-04-08 09:39:11 -04:00
overlayfs	ovl: enable xino automatically in more cases	2020-03-27 16:51:02 +01:00
proc	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2020-04-10 12:59:56 -07:00
pstore	pstore/blk: Introduce backend for block devices	2020-05-30 10:34:03 -07:00
qnx4	…
qnx6	…
quota	…
ramfs	…
reiserfs	reiserfs: clean up several indentation issues	2020-04-07 10:43:44 -07:00
romfs	…
squashfs	…
sysfs	sysfs: remove redundant __compat_only_sysfs_link_entry_to_kobj fn	2020-04-05 11:34:35 -07:00
sysv	…
tracefs	…
ubifs	This pull request contains fixes for UBI and UBIFS:	2020-04-07 12:40:56 -07:00
udf	change email address for Pali Rohár	2020-04-10 15:36:22 -07:00
ufs	…
unicode	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
vboxsf	…
verity	…
xfs	xfs: reflink should force the log out if mounted with wsync	2020-04-06 08:44:39 -07:00
zonefs	zonfs: Fix handling of read-only zones	2020-03-25 11:28:26 +09:00
Kconfig	…
Kconfig.binfmt	…
Makefile	…
aio.c	…
anon_inodes.c	…
attr.c	…
bad_inode.c	…
binfmt_aout.c	…
binfmt_elf.c	fs/binfmt_elf.c: don't free interpreter's ELF pheaders on common path	2020-04-07 10:43:44 -07:00
binfmt_elf_fdpic.c	…
binfmt_em86.c	…
binfmt_flat.c	…
binfmt_misc.c	…
binfmt_script.c	…
block_dev.c	New code for 5.7:	2020-04-02 12:59:36 -07:00
buffer.c	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2020-03-30 16:17:15 -07:00
char_dev.c	…
compat.c	…
compat_binfmt_elf.c	…
coredump.c	…
d_path.c	…
dax.c	dax,iomap: Add helper dax_iomap_zero() to zero a range	2020-04-02 19:15:03 -07:00
dcache.c	…
dcookies.c	…
direct-io.c	…
drop_caches.c	…
eventfd.c	…
eventpoll.c	fs/epoll: make nesting accounting safe for -rt kernel	2020-04-07 10:43:44 -07:00
exec.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2020-04-02 11:22:17 -07:00
fcntl.c	…
fhandle.c	…
file.c	io_uring: make sure openat/openat2 honor rlimit nofile	2020-03-20 08:47:27 -06:00
file_table.c	…
filesystems.c	fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()	2020-04-10 15:36:22 -07:00
fs-writeback.c	…
fs_context.c	…
fs_parser.c	fs_parse: remove pr_notice() about each validation	2020-04-02 09:35:26 -07:00
fs_pin.c	…
fs_struct.c	…
fs_types.c	…
fsopen.c	…
inode.c	…
internal.h	Merge branch 'work.dotdot1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-04-02 12:30:08 -07:00
io-wq.c	io_uring: use io-wq manager as backup task if task is exiting	2020-04-03 11:35:57 -06:00
io-wq.h	io_uring: use io-wq manager as backup task if task is exiting	2020-04-03 11:35:57 -06:00
io_uring.c	io_uring: punt final io_ring_ctx wait-and-free to workqueue	2020-04-09 18:45:27 -06:00
ioctl.c	…
libfs.c	libfs: fix infoleak in simple_attr_read()	2020-03-24 13:27:16 +01:00
locks.c	locks: reinstate locks_delete_block optimization	2020-03-18 13:03:38 -07:00
mbcache.c	…
mount.h	…
mpage.c	…
namei.c	fix a braino in legitimize_path()	2020-04-06 10:38:59 -04:00
namespace.c	LOOKUP_MOUNTPOINT: fold path_mountpointat() into path_lookupat()	2020-03-13 21:08:17 -04:00
no-block.c	…
nsfs.c	fs/nsfs.c: Added ns_match	2020-03-12 17:33:11 -07:00
open.c	Merge branch 'work.dotdot1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-04-02 12:30:08 -07:00
pipe.c	mm: kmem: rename memcg_kmem_(un)charge() into memcg_kmem_(un)charge_page()	2020-04-02 09:35:28 -07:00
pnode.c	…
pnode.h	…
posix_acl.c	…
proc_namespace.c	…
read_write.c	powerpc: Add back __ARCH_WANT_SYS_LLSEEK macro	2020-04-03 00:09:59 +11:00
readdir.c	…
select.c	…
seq_file.c	fs/seq_file.c: seq_read(): add info message about buggy .next functions	2020-04-10 15:36:22 -07:00
signalfd.c	…
splice.c	…
stack.c	…
stat.c	…
statfs.c	…
super.c	…
sync.c	…
timerfd.c	…
userfaultfd.c	userfaultfd: wp: declare _UFFDIO_WRITEPROTECT conditionally	2020-04-07 10:43:40 -07:00
utimes.c	…
xattr.c	kernfs: Add removed_size out param for simple_xattr_set	2020-03-16 15:53:47 -04:00