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| author | Ryusuke Konishi <konishi.ryusuke@gmail.com> | 2024-08-26 20:41:14 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-02 06:43:43 +0300 |
| commit | cfdfe9e17c4142cb556f34f25f93f4f85ca494f0 (patch) | |
| tree | ef5d09fa07a278a48e7d1b60376b34017578a90f | |
| parent | 33d23d849610df330ffb02420df705730a79f8e8 (diff) | |
| download | linux-cfdfe9e17c4142cb556f34f25f93f4f85ca494f0.tar.xz | |
nilfs2: remove sc_timer_task
After commit f5d4e04634c9 ("nilfs2: fix use-after-free of timer for log
writer thread") is applied, nilfs_construct_timeout(), which is called by
a timer and wakes up the log writer thread, is never called after the log
writer thread has terminated.
As a result, the member variable "sc_timer_task" of the "nilfs_sc_info"
structure, which was added when timer_setup() was adopted to retain a
reference to the log writer thread's task even after it had terminated, is
no longer needed, as it should be; we can simply use "sc_task" instead,
which holds a reference to the log writer thread's task for its lifetime.
So, eliminate "sc_timer_task" by this means.
Link: https://lkml.kernel.org/r/20240826174116.5008-7-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: Huang Xiaojia <huangxiaojia2@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | fs/nilfs2/segment.c | 3 | ||||
| -rw-r--r-- | fs/nilfs2/segment.h | 2 |
2 files changed, 1 insertions, 4 deletions
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index e4ec36d66607..ed14e5d4a354 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -2502,7 +2502,7 @@ static void nilfs_construction_timeout(struct timer_list *t) { struct nilfs_sc_info *sci = from_timer(sci, t, sc_timer); - wake_up_process(sci->sc_timer_task); + wake_up_process(sci->sc_task); } static void @@ -2640,7 +2640,6 @@ static int nilfs_segctor_thread(void *arg) struct the_nilfs *nilfs = sci->sc_super->s_fs_info; int timeout = 0; - sci->sc_timer_task = current; timer_setup(&sci->sc_timer, nilfs_construction_timeout, 0); /* start sync. */ diff --git a/fs/nilfs2/segment.h b/fs/nilfs2/segment.h index 2499721ebcc9..7d1160a266df 100644 --- a/fs/nilfs2/segment.h +++ b/fs/nilfs2/segment.h @@ -115,7 +115,6 @@ struct nilfs_segsum_pointer { * @sc_lseg_stime: Start time of the latest logical segment * @sc_watermark: Watermark for the number of dirty buffers * @sc_timer: Timer for segctord - * @sc_timer_task: Thread woken up by @sc_timer * @sc_task: current thread of segctord */ struct nilfs_sc_info { @@ -172,7 +171,6 @@ struct nilfs_sc_info { unsigned long sc_watermark; struct timer_list sc_timer; - struct task_struct *sc_timer_task; struct task_struct *sc_task; }; |