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scst_vdisk: Micro-optimize vdisk_caching_pg

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This patch does not change any behavior but micro-optimizes
vdisk_caching_pg(). Declaring the array caching_pg[] const reduces
11 bytes from the assembler code of this function.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@5986 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2015-01-22 05:09:17 +00:00
parent f5a3f799c3
commit a3d1d4f809
1 changed files with 10 additions and 6 deletions
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16
scst/src/dev_handlers/scst_vdisk.c
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@@ -3847,15 +3847,19 @@ static int vdisk_format_pg(unsigned char *p, int pcontrol,
static int vdisk_caching_pg(unsigned char *p, int pcontrol,
struct scst_vdisk_dev *virt_dev)
{ /* Caching page for mode_sense */
unsigned char caching_pg[] = {0x8, 0x12, 0x0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0x80, 0x14, 0, 0, 0, 0, 0, 0};
if (!virt_dev->nv_cache && vdev_saved_mode_pages_enabled)
caching_pg[0] |= 0x80;
{
/* Caching page for mode_sense */
static const unsigned char caching_pg[] = {
0x8, 0x12, 0x0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0x80, 0x14, 0, 0,
0, 0, 0, 0
};
memcpy(p, caching_pg, sizeof(caching_pg));
if (!virt_dev->nv_cache && vdev_saved_mode_pages_enabled)
p[0] |= 0x80;
switch (pcontrol) {
case 0: /* current */
p[2] |= (virt_dev->wt_flag || virt_dev->nv_cache) ? 0 : WCE;