Messages in this thread | | | Date | Tue, 29 Jan 2019 16:21:27 +0100 | From | David Sterba <> | Subject | Re: [PATCH] btrfs: relocation: fix unused variable |
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On Tue, Jan 29, 2019 at 02:01:46PM +0100, Anders Roxell wrote: > When CONFIG_BRTFS_ASSERT isn't enabled, variable root_objectid isn't used. > > fs/btrfs/relocation.c: In function ‘insert_dirty_subv’: > fs/btrfs/relocation.c:2138:6: warning: unused variable ‘root_objectid’ [-Wunused-variable] > u64 root_objectid = root->root_key.objectid; > ^~~~~~~~~~~~~ > > Reworked by adding a runtime check in the assfail function instead of > the '#ifdef CONFIG_BTRFS_ASSERT #else ...", so the compiler sees the > condition being passed into an inline function after preprocessing.
I've fixed the warning by avoiding the local variable but I like your fix in general, thanks.
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