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btrfs: Add enospc_debug printing in metadata_reserve_bytes 

Currently when enospc_debug mount option is turned on we do not print
any debug info in case metadata reservation failures happen. Fix this
by adding the necessary hook in reserve_metadata_bytes.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2017-12-15 12:05:37 +02:00 committed by David Sterba
parent 45ae2c1841
commit 9a3daff320
1 changed files with 6 additions and 1 deletions
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7
fs/btrfs/extent-tree.c
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@ -5394,10 +5394,15 @@ static int reserve_metadata_bytes(struct btrfs_root *root,
!block_rsv_use_bytes(global_rsv, orig_bytes))
ret = 0;
}
if (ret == -ENOSPC)
if (ret == -ENOSPC) {
trace_btrfs_space_reservation(fs_info, "space_info:enospc",
block_rsv->space_info->flags,
orig_bytes, 1);
if (btrfs_test_opt(fs_info, ENOSPC_DEBUG))
dump_space_info(fs_info, block_rsv->space_info,
orig_bytes, 0);
}
return ret;
}