diff options
| author |   Josef Bacik <josef@toxicpanda.com> | 2020-10-09 09:28:29 -0400 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2021-02-08 22:58:59 +0100 |
| commit | e5ad49e215a07562f0a765c68161d13d7c23d8d1 (patch) | |
| tree | 71716a73c20d84148fdad60307d8e568accd795e /fs/btrfs/space-info.c | |
| parent | btrfs: adjust the flush trace point to include the source (diff) | |
| download | wireguard-linux-e5ad49e215a07562f0a765c68161d13d7c23d8d1.tar.xz wireguard-linux-e5ad49e215a07562f0a765c68161d13d7c23d8d1.zip | |
btrfs: add a trace class for dumping the current ENOSPC state
Often when I'm debugging ENOSPC related issues I have to resort to
printing the entire ENOSPC state with trace_printk() in different spots.
This gets pretty annoying, so add a trace state that does this for us.
Then add a trace point at the end of preemptive flushing so you can see
the state of the space_info when we decide to exit preemptive flushing.
This helped me figure out we weren't kicking in the preemptive flushing
soon enough.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/space-info.c')
| -rw-r--r-- | fs/btrfs/space-info.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c index bb4f85c07738..bccd98141a6e 100644 --- a/fs/btrfs/space-info.c +++ b/fs/btrfs/space-info.c @@ -1140,6 +1140,7 @@ static void btrfs_preempt_reclaim_metadata_space(struct work_struct *work) /* We only went through once, back off our clamping. */ if (loops == 1 && !space_info->reclaim_size) space_info->clamp = max(1, space_info->clamp - 1); + trace_btrfs_done_preemptive_reclaim(fs_info, space_info); spin_unlock(&space_info->lock); } |