On Mon, May 14, 2018 at 11:39:42AM +0800, Chao Yu wrote: > On 2018/5/10 21:20, Sahitya Tummala wrote: > > f2fs_ioc_shutdown() ioctl gets stuck in the below path > > when going down with full sync (F2FS_GOING_DOWN_FULLSYNC) > > option. > > > > __switch_to+0x90/0xc4 > > percpu_down_write+0x8c/0xc0 > > freeze_super+0xec/0x1e4 > > freeze_bdev+0xc4/0xcc > > f2fs_ioctl+0xc0c/0x1ce0 > > f2fs_compat_ioctl+0x98/0x1f0 > > > > Fix this by not holding write access during this ioctl. > > I think we can just remove lock coverage for F2FS_GOING_DOWN_FULLSYNC path, > for > other path, we need to keep as it is. >
Thanks, I thought about it too but then I checked that XFS shutdown ioctl is not taking any lock for this ioctl. Hence, I followed the same in F2FS. Do you know why XFS is not taking any lock? Is it really needed in shutdown ioctl? -- Sent by a consultant of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.