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fs/nilfs2: convert timers to use timer_setup() 

In preparation for unconditionally passing the struct timer_list pointer
to all timer callbacks, switch to using the new timer_setup() and
from_timer() to pass the timer pointer explicitly.  This requires adding
a pointer to hold the timer's target task, as the lifetime of sc_task
doesn't appear to match the timer's task.

Link: http://lkml.kernel.org/r/20171016235900.GA102729@beast
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kees Cook 2017-11-17 15:29:32 -08:00 committed by Linus Torvalds
parent fb910c42cc
commit 7554e9c4cf
2 changed files with 6 additions and 6 deletions
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11
fs/nilfs2/segment.c
View File

@ -2400,11 +2400,11 @@ static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode)
return err;
}
static void nilfs_construction_timeout(unsigned long data)
static void nilfs_construction_timeout(struct timer_list *t)
{
struct task_struct *p = (struct task_struct *)data;
struct nilfs_sc_info *sci = from_timer(sci, t, sc_timer);
wake_up_process(p);
wake_up_process(sci->sc_timer_task);
}
static void
@ -2542,8 +2542,7 @@ static int nilfs_segctor_thread(void *arg)
struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
int timeout = 0;
sci->sc_timer.data = (unsigned long)current;
sci->sc_timer.function = nilfs_construction_timeout;
sci->sc_timer_task = current;
/* start sync. */
sci->sc_task = current;
@ -2674,7 +2673,7 @@ static struct nilfs_sc_info *nilfs_segctor_new(struct super_block *sb,
INIT_LIST_HEAD(&sci->sc_gc_inodes);
INIT_LIST_HEAD(&sci->sc_iput_queue);
INIT_WORK(&sci->sc_iput_work, nilfs_iput_work_func);
init_timer(&sci->sc_timer);
timer_setup(&sci->sc_timer, nilfs_construction_timeout, 0);
sci->sc_interval = HZ * NILFS_SC_DEFAULT_TIMEOUT;
sci->sc_mjcp_freq = HZ * NILFS_SC_DEFAULT_SR_FREQ;

1
fs/nilfs2/segment.h
View File

@ -180,6 +180,7 @@ struct nilfs_sc_info {
unsigned long sc_watermark;
struct timer_list sc_timer;
struct task_struct *sc_timer_task;
struct task_struct *sc_task;
};