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android_kernel_xiaomi_sm8350/fs
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Simon Horman 85a0ee342e kdump: add is_vmcore_usable() and vmcore_unusable() 
The usage of elfcorehdr_addr has changed recently such that being set to
ELFCORE_ADDR_MAX is used by is_kdump_kernel() to indicate if the code is
executing in a kernel executed as a crash kernel.

However, arch/ia64/kernel/setup.c:reserve_elfcorehdr will rest
elfcorehdr_addr to ELFCORE_ADDR_MAX on error, which means any subsequent
calls to is_kdump_kernel() will return 0, even though they should return
1.

Ok, at this point in time there are no subsequent calls, but I think its
fair to say that there is ample scope for error or at the very least
confusion.

This patch add an extra state, ELFCORE_ADDR_ERR, which indicates that
elfcorehdr_addr was passed on the command line, and thus execution is
taking place in a crashdump kernel, but vmcore can't be used for some
reason.  This is tested for using is_vmcore_usable() and set using
vmcore_unusable().  A subsequent patch makes use of this new code.

To summarise, the states that elfcorehdr_addr can now be in are as follows:

ELFCORE_ADDR_MAX: not a crashdump kernel
ELFCORE_ADDR_ERR: crashdump kernel but vmcore is unusable
any other value:  crash dump kernel and vmcore is usable

Signed-off-by: Simon Horman <horms@verge.net.au>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20 08:52:40 -07:00
..
9p vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
adfs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
affs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
afs afs: convert to new aops 2008-10-16 11:21:48 -07:00
autofs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
autofs4 autofs4: add miscellaneous device for ioctls 2008-10-16 11:21:39 -07:00
befs befs: annotate fs32 on tests for superblock endianness 2008-10-16 11:21:46 -07:00
bfs bfs: fix Lockdep warning 2008-09-13 14:41:51 -07:00
cifs vmscan: split LRU lists into anon & file sets 2008-10-20 08:50:25 -07:00
coda device create: misc: convert device_create_drvdata to device_create 2008-10-16 09:24:43 -07:00
configfs [PATCH] configfs: Consolidate locking around configfs_detach_prep() in configfs_rmdir() 2008-08-22 11:09:02 -07:00
cramfs cramfs: fix named-pipe handling 2008-08-20 15:40:32 -07:00
debugfs integrity: special fs magic 2008-10-13 09:47:43 +11:00
devpts vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
dlm dlm: choose better identifiers 2008-09-05 09:51:30 -05:00
ecryptfs eCryptfs: remove netlink transport 2008-10-16 11:21:39 -07:00
efs EFS: Don't set f_fsid in statfs(). 2008-09-02 23:15:22 +01:00
exportfs
ext2 ext2: avoid printk floods in the face of directory corruption 2008-10-16 11:21:46 -07:00
ext3 ext3: avoid printk floods in the face of directory corruption 2008-10-20 08:52:38 -07:00
ext4 ext4: Remove automatic enabling of the HUGE_FILE feature flag 2008-10-16 22:50:48 -04:00
fat vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
freevxfs
fuse vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
gfs2 vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
hfs hfs: fix namelength memory corruption 2008-10-16 11:21:46 -07:00
hfsplus hfsplus: fix possible deadlock when handling corrupted extents 2008-10-20 08:52:38 -07:00
hostfs
hpfs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
hppfs
hugetlbfs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
isofs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
jbd jbd: ordered data integrity fix 2008-10-20 08:52:37 -07:00
jbd2 ext4: Replace hackish ext4_mb_poll_new_transaction with commit callback 2008-10-16 20:00:24 -04:00
jffs2 removed unused #include <linux/version.h>'s 2008-08-23 12:14:12 -07:00
jfs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
lockd NLM: Remove "proto" argument from lockd_up() 2008-10-04 17:12:27 -04:00
minix
msdos
ncpfs
nfs vmscan: split LRU lists into anon & file sets 2008-10-20 08:50:25 -07:00
nfs_common
nfsd NLM: Remove unused argument from svc_addsock() function 2008-10-04 17:12:27 -04:00
nls remove CONFIG_KMOD from fs 2008-10-17 02:38:36 +11:00
ntfs vmscan: split LRU lists into anon & file sets 2008-10-20 08:50:25 -07:00
ocfs2 ocfs2: fix build error 2008-10-14 18:31:46 -07:00
omfs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
openpromfs
partitions block: add partition attribute for partition number 2008-10-17 08:46:56 +02:00
proc kdump: add is_vmcore_usable() and vmcore_unusable() 2008-10-20 08:52:40 -07:00
qnx4
ramfs Ramfs and Ram Disk pages are unevictable 2008-10-20 08:50:26 -07:00
reiserfs fs/reiserfs: use an IS_ERR test rather than a NULL test 2008-10-16 11:21:46 -07:00
romfs romfs_readpage: don't report errors for pages beyond i_size 2008-07-30 14:30:34 -07:00
smbfs
sysfs kobject: Cleanup kobject_rename and !CONFIG_SYSFS 2008-10-16 09:24:52 -07:00
sysv
ubifs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
udf vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
ufs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
vfat
xfs xfs: fix remount rw with unrecognized options 2008-10-15 10:00:00 -07:00
aio.c
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf_fdpic.c binfmt_elf_fdpic: wire up AT_EXECFD, AT_EXECFN, AT_SECURE 2008-10-16 11:21:46 -07:00
binfmt_elf.c coredump_filter: add hugepage dumping 2008-10-20 08:52:32 -07:00
binfmt_em86.c Allow recursion in binfmt_script and binfmt_misc 2008-10-16 11:21:38 -07:00
binfmt_flat.c uclinux: fix gzip header parsing in binfmt_flat.c 2008-10-16 11:21:29 -07:00
binfmt_misc.c Allow recursion in binfmt_script and binfmt_misc 2008-10-16 11:21:38 -07:00
binfmt_script.c Allow recursion in binfmt_script and binfmt_misc 2008-10-16 11:21:38 -07:00
binfmt_som.c binfmt_som.c: add MODULE_LICENSE 2008-10-16 11:21:38 -07:00
bio-integrity.c block: Introduce integrity data ownership flag 2008-10-09 08:56:21 +02:00
bio.c block: mark bio_split_pool static 2008-10-09 08:57:05 +02:00
block_dev.c block: fix current kernel-doc warnings 2008-10-17 08:46:57 +02:00
buffer.c fs: buffer lock use lock bitops 2008-10-20 08:52:32 -07:00
char_dev.c remove CONFIG_KMOD from fs 2008-10-17 02:38:36 +11:00
compat_binfmt_elf.c
compat_ioctl.c
compat.c compat: move cp_compat_stat to common code 2008-10-16 11:21:33 -07:00
dcache.c Fix NULL pointer dereference in proc_sys_compare 2008-09-29 07:42:57 -07:00
dcookies.c
direct-io.c Remove Andrew Morton's old email accounts 2008-10-16 11:21:32 -07:00
dnotify.c
dquot.c quota: remove CVS keywords 2008-10-16 11:21:46 -07:00
drop_caches.c
eventfd.c
eventpoll.c epoll: drop unnecessary test 2008-10-16 11:21:32 -07:00
exec.c coredump: format_corename: don't append .%pid if multi-threaded 2008-10-20 08:52:39 -07:00
fcntl.c [PATCH] clean dup2() up a bit 2008-08-01 11:25:24 -04:00
fifo.c
file_table.c
file.c [PATCH] merge locate_fd() and get_unused_fd() 2008-08-01 11:25:23 -04:00
filesystems.c
fs-writeback.c Remove Andrew Morton's old email accounts 2008-10-16 11:21:32 -07:00
generic_acl.c
inode.c fs/inode.c: properly init address_space->writeback_index 2008-08-15 08:35:44 -07:00
inotify_user.c inotify: fix lock ordering wrt do_page_fault's mmap_sem 2008-10-02 15:53:13 -07:00
inotify.c
internal.h
ioctl.c provide generic_block_fiemap() only with BLOCK=y 2008-10-12 11:44:37 -07:00
ioprio.c fix setpriority(PRIO_PGRP) thread iterator breakage 2008-08-20 15:40:32 -07:00
Kconfig ext4: Fix Kconfig typo for ext4dev 2008-10-13 09:01:02 -04:00
Kconfig.binfmt add CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS 2008-10-20 08:52:39 -07:00
libfs.c VFS: increase pseudo-filesystem block size to PAGE_SIZE 2008-07-30 09:41:44 -07:00
locks.c
Makefile Configure out AIO support 2008-10-16 11:21:51 -07:00
mbcache.c
mpage.c Remove Andrew Morton's old email accounts 2008-10-16 11:21:32 -07:00
namei.c [patch 3/4] vfs: remove unused nameidata argument of may_create() 2008-08-01 11:25:30 -04:00
namespace.c [PATCH] pass struct path * to do_add_mount() 2008-08-01 11:25:32 -04:00
nfsctl.c
no-block.c
open.c tty: the vhangup syscall is racy 2008-10-13 09:51:41 -07:00
pipe.c
pnode.c
pnode.h
posix_acl.c
quota_v1.c
quota_v2.c
quota.c
read_write.c
read_write.h
readdir.c [PATCH] fix regular readdir() and friends 2008-08-25 01:18:08 -04:00
select.c
seq_file.c seq_file: add seq_cpumask_list(), seq_nodemask_list() 2008-10-20 08:52:39 -07:00
signalfd.c
splice.c Don't allow splice() to files opened with O_APPEND 2008-10-09 14:26:38 -07:00
stack.c
stat.c
super.c
sync.c
timerfd.c
utimes.c
xattr_acl.c
xattr.c