Re: [PATCH 0/3] btrfs: fix fsync failure with SQL Server workload

[Anand Jain <anand.jain@oracle.com>]

On 24/5/21 6:35 pm, fdmanana@kernel.org wrote:
> From: Filipe Manana <fdmanana@suse.com>
> 
> This patchset fixes a fsync failure (-EIO) and transaction abort during
> a workload for Microsoft's SQL Server running in a Docker container as
> reported at:
> 
> https://lore.kernel.org/linux-btrfs/93c4600e-5263-5cba-adf0-6f47526e7561@in.tum.de/
> 
> It also adds an optimization for the workload, by removing lots of fsyncs
> that trigger the slow code path and replacing them with ones that use the
> fast path, reducing the workload's runtime by about -12% on my test box.
> 
> Filipe Manana (3):
>    btrfs: fix fsync failure and transaction abort after writes to
>      prealloc extents
>    btrfs: fix misleading and incomplete comment of btrfs_truncate()
>    btrfs: don't set the full sync flag when truncation does not touch
>      extents
> 
>   fs/btrfs/ctree.h            |  2 +-
>   fs/btrfs/file-item.c        | 98 ++++++++++++++++++++++++++++---------
>   fs/btrfs/free-space-cache.c |  2 +-
>   fs/btrfs/inode.c            | 65 +++++++++++++++++-------
>   fs/btrfs/tree-log.c         |  5 +-
>   5 files changed, 128 insertions(+), 44 deletions(-)
> 


Patch 3/3 needs conflict fix on latest misc-next in ctree.h.

Tested-by: Anand Jain <anand.jain@oracle.com>

For the whole series.
Test arch=aarch64 pagesize=64k.

Thanks, Anand