[0/1] btrfs: Add global_reserve_size mount option

Message

Vladimir Panteleev Aug. 10, 2019, 12:41 p.m. UTC

Hi,

This is a follow-up to my previous thread titled ""kernel BUG" and
segmentation fault with "device delete"". Since my last message there,
I discovered that the problem I was seeing was solved merely by
increasing the size of the global reserve to 1G. I don't claim to have
anywhere near a complete understanding of btrfs, its implementation,
or the problem at hand, but I figured a bad patch is better than no
patch, so here's a patch which does allow working around my problem
without building a custom kernel. Or, if anyone has better ideas how
to understand or address this problem, I'd be happy to help or test
things.

Vladimir Panteleev (1):
  btrfs: Add global_reserve_size mount option

 fs/btrfs/block-rsv.c |  2 +-
 fs/btrfs/ctree.h     |  3 +++
 fs/btrfs/disk-io.c   |  1 +
 fs/btrfs/super.c     | 17 ++++++++++++++++-
 4 files changed, 21 insertions(+), 2 deletions(-)