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f2fs: mark gc_thread as NULL when thread creation is failed 

When gc thread creation is failed, mark gc_thread as NULL to avoid
crash while trying to stop invalid thread in stop_gc_thread->kthread_stop.
Instead make it return from:
	if (!gc_th)
       return;

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Namjae Jeon 2013-02-02 23:52:42 +09:00 committed by Jaegeuk Kim
parent ec7b1f2dd1
commit 25718423ea
1 changed files with 1 additions and 0 deletions
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fs/f2fs/gc.c
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@ -104,6 +104,7 @@ int start_gc_thread(struct f2fs_sb_info *sbi)
"f2fs_gc-%u:%u", MAJOR(dev), MINOR(dev)); "f2fs_gc-%u:%u", MAJOR(dev), MINOR(dev));
if (IS_ERR(gc_th->f2fs_gc_task)) { if (IS_ERR(gc_th->f2fs_gc_task)) {
kfree(gc_th); kfree(gc_th);
sbi->gc_thread = NULL;
return -ENOMEM; return -ENOMEM;
} }
return 0; return 0;