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fix:解决disk资源未释放导致的资源泄露问题 

主干存在该问题，还未解决.

因为对于热插入的sd卡，如果被其中一个线程操作拿住锁资源，

热插拔会导致disk资源状态未修改为UNUSED，造成资源泄露

现在修改为在拔出sd卡时，销毁disk锁资源之前，先将disk状态修改成UNUSED

Close #I3ZOIO

Signed-off-by: dong-yiqun <dongyiqun@huawei.com>
This commit is contained in:
dong-yiqun 2021-09-09 10:23:36 +08:00
parent 3e6bab5158
commit d39ed70c65
1 changed files with 3 additions and 3 deletions
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6
fs/vfs/disk/disk.c
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@ -1279,20 +1279,20 @@ static INT32 DiskDeinit(los_disk *disk)
#endif
disk->dev = NULL;
DISK_UNLOCK(&disk->disk_mutex);
(VOID)unregister_blockdriver(disk->disk_name);
if (disk->disk_name != NULL) {
LOS_MemFree(m_aucSysMem0, disk->disk_name);
disk->disk_name = NULL;
}
DISK_UNLOCK(&disk->disk_mutex);
disk->disk_status = STAT_UNUSED;
ret = pthread_mutex_destroy(&disk->disk_mutex);
if (ret != 0) {
PRINT_ERR("%s %d, mutex destroy failed, ret = %d\n", __FUNCTION__, __LINE__, ret);
return -EFAULT;
}
disk->disk_status = STAT_UNUSED;
return ENOERR;
}