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maple_tree: shrink struct maple_tree

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Pack the members of struct maple_tree to avoid holes on 64-bit.  The size
shrinks from 24 to 16 bytes which will save eight bytes in every structure
which embeds it.

[willy@infradead.org: changelog alterations]
Link: https://lkml.kernel.org/r/20230821225145.2169848-1-mjguzik@gmail.com
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Mateusz Guzik 2023-08-22 00:51:45 +02:00 • committed by Andrew Morton
parent 432af5c966
commit 52ae298e3e
1 changed files with 1 additions and 1 deletions
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2
include/linux/maple_tree.h
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@ -220,8 +220,8 @@ struct maple_tree {
spinlock_t ma_lock;
lockdep_map_p ma_external_lock;
};
void __rcu *ma_root;
unsigned int ma_flags;
void __rcu *ma_root;
};
/**