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authorJeff Mahoney <jeffm@suse.com>2013-10-16 16:27:01 -0400
committerChris Mason <chris.mason@fusionio.com>2013-11-11 22:03:37 -0500
commitcab45e22da48b523665b3566f43527a2fead1d1e (patch)
treee4c3dfbf5bad8298ef40cbb681461d7cac168990 /fs
parent8b558c5f097b636209b654f4d7775ac96054d6e3 (diff)
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btrfs: add tracing for failed reservations
When debugging ENOSPC issues, it's nice to be able to see which reservations failed as well as the ones which succeeded. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/extent-tree.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 4062a65f9fb7..a807acc9a63e 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3684,6 +3684,9 @@ commit_trans:
goto again;
}
+ trace_btrfs_space_reservation(root->fs_info,
+ "space_info:enospc",
+ data_sinfo->flags, bytes, 1);
return -ENOSPC;
}
data_sinfo->bytes_may_use += bytes;
@@ -4335,6 +4338,10 @@ out:
!block_rsv_use_bytes(global_rsv, orig_bytes))
ret = 0;
}
+ if (ret == -ENOSPC)
+ trace_btrfs_space_reservation(root->fs_info,
+ "space_info:enospc",
+ space_info->flags, orig_bytes, 1);
if (flushing) {
spin_lock(&space_info->lock);
space_info->flush = 0;