Konstantin Khlebnikov cd9e2bb827 proc: use down_read_killable mmap_sem for /proc/pid/map_files ... Do not remain stuck forever if something goes wrong. Using a killable lock permits cleanup of stuck tasks and simplifies investigation. It seems ->d_revalidate() could return any error (except ECHILD) to abort validation and pass error as result of lookup sequence. [akpm@linux-foundation.org: fix proc_map_files_lookup() return value, per Andrei] Link: http://lkml.kernel.org/r/156007493995.3335.9595044802115356911.stgit@buzz Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Reviewed-by: Roman Gushchin <guro@fb.com> Reviewed-by: Cyrill Gorcunov <gorcunov@gmail.com> Reviewed-by: Kirill Tkhai <ktkhai@virtuozzo.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2019-07-12 11:05:47 -07:00
..
array.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-07-08 16:39:53 -07:00
base.c	proc: use down_read_killable mmap_sem for /proc/pid/map_files	2019-07-12 11:05:47 -07:00
cmdline.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
consoles.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191	2019-05-30 11:29:21 -07:00
cpuinfo.c	x86 / CPU: Always show current CPU frequency in /proc/cpuinfo	2017-11-15 19:46:50 +01:00
devices.c	proc: introduce proc_create_seq{,_data}	2018-05-16 07:23:35 +02:00
fd.c	proc: use "unsigned int" in proc_fill_cache()	2018-06-07 17:34:38 -07:00
fd.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
generic.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
inode.c	procfs: switch to ->free_inode()	2019-05-01 22:43:25 -04:00
internal.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
interrupts.c	proc: introduce proc_create_seq{,_data}	2018-05-16 07:23:35 +02:00
Kconfig	proc: Add /proc/<pid>/arch_status	2019-06-12 11:42:13 +02:00
kcore.c	fs/proc/kcore.c: make kcore_modules static	2019-03-29 10:01:37 -07:00
kmsg.c	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
loadavg.c	sched: loadavg: consolidate LOAD_INT, LOAD_FRAC, CALC_LOAD	2018-10-26 16:26:32 -07:00
Makefile	proc: : uninline name_to_int()	2017-11-17 16:10:00 -08:00
meminfo.c	mm, proc: add KReclaimable to /proc/meminfo	2018-10-26 16:26:32 -07:00
namespaces.c	procfs: switch instantiate_t to d_splice_alias()	2018-05-26 14:20:50 -04:00
nommu.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
page.c	mm: convert PG_balloon to PG_offline	2019-03-05 21:07:14 -08:00
proc_net.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
proc_sysctl.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-05-02 22:14:21 -04:00
proc_tty.c	tty: replace ->proc_fops with ->proc_show	2018-05-16 07:24:30 +02:00
root.c	fanotify: Disallow permission events for proc filesystem	2019-05-28 18:10:07 +02:00
self.c	fs/proc/self.c: code cleanup for proc_setup_self()	2019-03-05 21:07:21 -08:00
softirqs.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
stat.c	Merge branch 'akpm' (patches from Andrew)	2019-03-06 10:31:36 -08:00
task_mmu.c	proc: use down_read_killable mmap_sem for /proc/pid/clear_refs	2019-07-12 11:05:47 -07:00
task_nommu.c	proc: use down_read_killable mmap_sem for /proc/pid/maps	2019-07-12 11:05:46 -07:00
thread_self.c	fs/proc/thread_self.c: code cleanup for proc_setup_thread_self()	2019-03-05 21:07:21 -08:00
uptime.c	fs/proc/uptime.c: use ktime_get_boottime_ts64	2018-08-22 10:52:45 -07:00
util.c	fs/proc/util.c: include fs/proc/internal.h for name_to_int()	2019-01-04 13:13:45 -08:00
version.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
vmcore.c	fs/proc/vmcore: Enable dumping of encrypted memory when SEV was active	2019-06-20 10:07:49 +02:00