Re: [PATCH] Btrfs: fix quick exhaustion of the system array in the superblock

Hi Filipe Manana, Can't the call to btrfs_create_pending_block_groups() cause a deadlock, like in http://www.spinics.net/lists/linux-btrfs/msg48744.html? Because this call updates the device tree, and we may be calling do_chunk_alloc() from find_free_extent() when holding a lock on the device

Re: [PATCH] Btrfs: fix quick exhaustion of the system array in the superblock

On Sun, Dec 13, 2015 at 10:29 AM, Alex Lyakas wrote: > Hi Filipe Manana, > > Can't the call to btrfs_create_pending_block_groups() cause a > deadlock, like in > http://www.spinics.net/lists/linux-btrfs/msg48744.html? Because this > call updates the device tree, and we may

Re: [PATCH] Btrfs: fix quick exhaustion of the system array in the superblock

Thank you, Filipe. Now it is more clear. Fortunately, in my kernel 3.18 I do not have do_chunk_alloc() calling btrfs_create_pending_block_groups(), so I cannot hit this deadlock. But can hit the issue that this call is meant to fix. Thanks, Alex. On Sun, Dec 13, 2015 at 5:45 PM, Filipe Manana

Re: [PATCH] Btrfs: fix quick exhaustion of the system array in the superblock

On Mon, Jul 20, 2015 at 02:56:20PM +0100, fdman...@kernel.org wrote: From: Filipe Manana fdman...@suse.com Omar reported that after commit 4fbcdf669454 (Btrfs: fix -ENOSPC when finishing block group creation), introduced in 4.2-rc1, the following test was failing due to exhaustion of the

[PATCH] Btrfs: fix quick exhaustion of the system array in the superblock

From: Filipe Manana fdman...@suse.com Omar reported that after commit 4fbcdf669454 (Btrfs: fix -ENOSPC when finishing block group creation), introduced in 4.2-rc1, the following test was failing due to exhaustion of the system array in the superblock: #!/bin/bash truncate -s 100T big.img