Messages in this thread Patch in this message | | | Subject | [PATCH] fs: reorder struct inotify_device on 64bits to remove padding | From | Richard Kennedy <> | Date | Thu, 04 Dec 2008 11:17:47 +0000 |
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Reorder struct inotify_device to remove 8 bytes of padding on 64bit builds, reducing size to 128 bytes . Therefore allocating from a smaller slab & using one fewer cachelines.
Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
---- Hi, patch against 2.6.28-rc7. built & tested on AMDX2 desktop.
I've not been able to send this to the listed inotify maintainers, I just get mail failures. So I guessed filesystem was the best home for it, hope that's ok.
regards Richard
diff --git a/fs/inotify_user.c b/fs/inotify_user.c index d367e9b..5554d7f 100644 --- a/fs/inotify_user.c +++ b/fs/inotify_user.c @@ -76,10 +76,10 @@ struct inotify_device { struct mutex ev_mutex; /* protects event queue */ struct mutex up_mutex; /* synchronizes watch updates */ struct list_head events; /* list of queued events */ - atomic_t count; /* reference count */ struct user_struct *user; /* user who opened this dev */ struct inotify_handle *ih; /* inotify handle */ struct fasync_struct *fa; /* async notification */ + atomic_t count; /* reference count */ unsigned int queue_size; /* size of the queue (bytes) */ unsigned int event_count; /* number of pending events */ unsigned int max_events; /* maximum number of events */
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