The patch titled
fs: reorder struct inotify_device on 64bits to remove padding
has been added to the -mm tree. Its filename is
fs-reorder-struct-inotify_device-on-64bits-to-remove-padding.patch
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------------------------------------------------------
Subject: fs: reorder struct inotify_device on 64bits to remove padding
From: Richard Kennedy <richard@xxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/inotify_user.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN fs/inotify_user.c~fs-reorder-struct-inotify_device-on-64bits-to-remove-padding fs/inotify_user.c
--- a/fs/inotify_user.c~fs-reorder-struct-inotify_device-on-64bits-to-remove-padding
+++ a/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 */
_
Patches currently in -mm which might be from richard@xxxxxxxxxxxxxxx are
origin.patch
linux-next.patch
fs-reorder-struct-inotify_device-on-64bits-to-remove-padding.patch
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