From f3ccfcdaf3986f8c541886606e950de52cab7ad3 Mon Sep 17 00:00:00 2001 From: Richard Kennedy Date: Tue, 22 Mar 2011 16:33:56 -0700 Subject: [PATCH] fs.h: remove 8 bytes of padding from block_device on 64bit builds Re-ordering struct block_inode to remove 8 bytes of padding on 64 bit builds, which also shrinks bdev_inode by 8 bytes (776 -> 768) allowing it to fit into one fewer cache lines. Signed-off-by: Richard Kennedy Cc: Al Viro Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/fs.h b/include/linux/fs.h index 7061a8587ee..12529e96635 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -662,9 +662,9 @@ struct address_space { struct block_device { dev_t bd_dev; /* not a kdev_t - it's a search key */ + int bd_openers; struct inode * bd_inode; /* will die */ struct super_block * bd_super; - int bd_openers; struct mutex bd_mutex; /* open/close mutex */ struct list_head bd_inodes; void * bd_claiming; -- 2.11.4.GIT