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| author | Richard Kennedy <richard@rsk.demon.co.uk> | 2011-03-23 00:33:56 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-23 01:44:10 +0100 |
| commit | f3ccfcdaf3986f8c541886606e950de52cab7ad3 (patch) | |
| tree | 3433cd58adfe51db1f466e6033040ac9a512ffd2 /include | |
| parent | include/linux/compiler-gcc*.h: unify macro definitions (diff) | |
| download | linux-f3ccfcdaf3986f8c541886606e950de52cab7ad3.tar.xz linux-f3ccfcdaf3986f8c541886606e950de52cab7ad3.zip | |
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 <richard@rsk.demon.co.uk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fs.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 7061a8587ee3..12529e966350 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; |