Re: [PATCH] ext4: check superblock mapped prior to get write access

Hello! On Tue 28-07-20 10:33:53, Xianting Tian wrote: > One crash issue happened when directly down the network interface, > which nbd device is connected to. The kernel version is kernel > 4.14.0-115. > According to the debug log and call trace, the buffer of ext4 > superblock already unmapped

[PATCH] ext4: check superblock mapped prior to get write access

One crash issue happened when directly down the network interface, which nbd device is connected to. The kernel version is kernel 4.14.0-115. According to the debug log and call trace, the buffer of ext4 superblock already unmapped after the network of nbd device down. But the code continue to run