[lkml]   [2019]   [May]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] btrfs: correct zstd workspace manager lock to use spin_lock_bh()
On Fri, May 17, 2019 at 07:16:26PM -0400, Dennis Zhou wrote:
> The btrfs zstd workspace manager uses a background timer to reclaim
> not recently used workspaces. I dumbly call spin_lock() from this
> context which I should have caught with lockdep but.. This deadlock was
> reported in [1]. The fix is to switch the zstd wsm lock to use
> spin_lock_bh().
> [1]
> Signed-off-by: Dennis Zhou <>

Reviewed-by: David Sterba <>

Added to 5.2-rc queue, thanks.

 \ /
  Last update: 2019-05-21 11:00    [W:0.043 / U:1.704 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site