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| author |  Jaegeuk Kim <jaegeuk@kernel.org>
| 2017-05-17 10:36:58 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org>
| 2017-05-23 21:07:18 -0700 |
| commit | 1d7be2708277edfef95171d52fb65ee26eaa076b (patch) | |
| tree | 84cc7366fb88e361cfe381238748744764b349ab /fs/f2fs/segment.c | |
| parent | f2fs: add a new function get_ssr_cost (diff) | |
| download | linux-1d7be2708277edfef95171d52fb65ee26eaa076b.tar.gz linux-1d7be2708277edfef95171d52fb65ee26eaa076b.tar.bz2 linux-1d7be2708277edfef95171d52fb65ee26eaa076b.zip | |
f2fs: try to freeze in gc and discard threads
This allows to freeze gc and discard threads.
Cc: stable@vger.kernel.org
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.c')
| -rw-r--r-- | fs/f2fs/segment.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 3bc36769ec9f..4591239dbae2 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -16,6 +16,7 @@ #include <linux/kthread.h> #include <linux/swap.h> #include <linux/timer.h> +#include <linux/freezer.h> #include "f2fs.h" #include "segment.h" @@ -1059,18 +1060,24 @@ static int issue_discard_thread(void *data) struct f2fs_sb_info *sbi = data; struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; wait_queue_head_t *q = &dcc->discard_wait_queue; -repeat: - if (kthread_should_stop()) - return 0; - __issue_discard_cmd(sbi, true); - __wait_discard_cmd(sbi, true); + set_freezable(); - congestion_wait(BLK_RW_SYNC, HZ/50); + do { + wait_event_interruptible(*q, kthread_should_stop() || + freezing(current) || + atomic_read(&dcc->discard_cmd_cnt)); + if (try_to_freeze()) + continue; + if (kthread_should_stop()) + return 0; - wait_event_interruptible(*q, kthread_should_stop() || - atomic_read(&dcc->discard_cmd_cnt)); - goto repeat; + __issue_discard_cmd(sbi, true); + __wait_discard_cmd(sbi, true); + + congestion_wait(BLK_RW_SYNC, HZ/50); + } while (!kthread_should_stop()); + return 0; } #ifdef CONFIG_BLK_DEV_ZONED |