OpenCloudOS-Kernel/include/trace
Josef Bacik 450114fc0d btrfs: don't use global reserve for chunk allocation
We've done this forever because of the voodoo around knowing how much
space we have.  However, we have better ways of doing this now, and on
normal file systems we'll easily have a global reserve of 512MiB, and
since metadata chunks are usually 1GiB that means we'll allocate
metadata chunks more readily.  Instead use the actual used amount when
determining if we need to allocate a chunk or not.

This has a side effect for mixed block group fs'es where we are no
longer allocating enough chunks for the data/metadata requirements.  To
deal with this add a ALLOC_CHUNK_FORCE step to the flushing state
machine.  This will only get used if we've already made a full loop
through the flushing machinery and tried committing the transaction.

If we have then we can try and force a chunk allocation since we likely
need it to make progress.  This resolves issues I was seeing with
the mixed bg tests in xfstests without the new flushing state.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
[ merged with patch "add ALLOC_CHUNK_FORCE to the flushing code" ]
Signed-off-by: David Sterba <dsterba@suse.com>
2019-02-25 14:13:34 +01:00
..
events btrfs: don't use global reserve for chunk allocation 2019-02-25 14:13:34 +01:00
bpf_probe.h bpf: introduce BPF_RAW_TRACEPOINT 2018-03-28 22:55:19 +02:00
define_trace.h bpf: introduce BPF_RAW_TRACEPOINT 2018-03-28 22:55:19 +02:00
perf.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
syscall.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
trace_events.h tracing: Prevent further users of zero size static arrays in trace events 2018-05-29 08:29:13 -04:00