From 3c1d84b71ebee2757b6c8691494a5716a7806bfa Mon Sep 17 00:00:00 2001 From: Satoru Takeuchi Date: Wed, 9 Mar 2016 15:18:57 +0900 Subject: [PATCH] Btrfs: Show a warning message if one of objectid reaches its highest value It's better to show a warning message for the exceptional case that one of objectid (in most case, inode number) reaches its highest value. For example, if inode cache is off and this event happens, we can't create any file even if there are not so many files. This message ease detecting such problem. Signed-off-by: Satoru Takeuchi Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/inode-map.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c index e50316c4af15..1f0ec19b23f6 100644 --- a/fs/btrfs/inode-map.c +++ b/fs/btrfs/inode-map.c @@ -556,6 +556,9 @@ int btrfs_find_free_objectid(struct btrfs_root *root, u64 *objectid) mutex_lock(&root->objectid_mutex); if (unlikely(root->highest_objectid >= BTRFS_LAST_FREE_OBJECTID)) { + btrfs_warn(root->fs_info, + "the objectid of root %llu reaches its highest value", + root->root_key.objectid); ret = -ENOSPC; goto out; } -- 2.39.2