Peter Zijlstra 536ebe9ca9 sched, fanotify: Deal with nested sleeps ... As per e23738a730 ("sched, inotify: Deal with nested sleeps"). fanotify_read is a wait loop with sleeps in. Wait loops rely on task_struct::state and sleeps do too, since that's the only means of actually sleeping. Therefore the nested sleeps destroy the wait loop state and the wait loop breaks the sleep functions that assume TASK_RUNNING (mutex_lock). Fix this by using the new woken_wake_function and wait_woken() stuff, which registers wakeups in wait and thereby allows shrinking the task_state::state changes to the actual sleep part. Reported-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reported-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Takashi Iwai <tiwai@suse.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Eric Paris <eparis@redhat.com> Link: http://lkml.kernel.org/r/20141216152838.GZ3337@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org>		2015-01-09 11:18:12 +01:00
..
fanotify_user.c	sched, fanotify: Deal with nested sleeps	2015-01-09 11:18:12 +01:00
fanotify.c	fanotify: fix double free of pending permission events	2014-08-06 18:01:12 -07:00
fanotify.h	fanotify: use fanotify event structure for permission response processing	2014-04-03 16:20:51 -07:00
Kconfig	treewide: fix typo of "suport" in various comments and Kconfig	2012-11-19 14:16:09 +01:00
Makefile	fanotify: fanotify_init syscall declaration	2010-07-28 09:58:55 -04:00