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Subject[PATCH] fs: xfs: xfs_icreate_item: constify xfs_item_ops structure
Date
Declare the structure xfs_item_ops as const as it is only passed as an
argument to the function xfs_log_item_init. As this argument is of type
const struct xfs_item_ops *, so xfs_item_ops structures having this
property can be declared as const.
Done using Coccinelle:

@r1 disable optional_qualifier @
identifier i;
position p;
@@
static struct xfs_item_ops i@p = {...};

@ok1@
identifier r1.i;
position p;
expression e1,e2,e3;
@@
xfs_log_item_init(e1,e2,e3,&i@p)

@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p

@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
static
+const
struct xfs_item_ops i={...};

@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct xfs_item_ops i;

File size before:
text data bss dec hex filename
737 64 8 809 329 fs/xfs/xfs_icreate_item.o

File size after:
text data bss dec hex filename
801 0 8 809 329 fs/xfs/xfs_icreate_item.o

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
---
fs/xfs/xfs_icreate_item.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_icreate_item.c b/fs/xfs/xfs_icreate_item.c
index d45ca72..865ad13 100644
--- a/fs/xfs/xfs_icreate_item.c
+++ b/fs/xfs/xfs_icreate_item.c
@@ -133,7 +133,7 @@ static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip)
/*
* This is the ops vector shared by all buf log items.
*/
-static struct xfs_item_ops xfs_icreate_item_ops = {
+static const struct xfs_item_ops xfs_icreate_item_ops = {
.iop_size = xfs_icreate_item_size,
.iop_format = xfs_icreate_item_format,
.iop_pin = xfs_icreate_item_pin,
--
1.9.1
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