[PATCH] mark several libata datastructures const

Hi,

the patch below marks several libata (and libata-driver) structures
const so that they end up in the .rodata segment and don't false-share
cachelines with things that get dirtied often.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 3b4ca55a3332..b21b8854072e 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -418,7 +418,7 @@ void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc,
         int i;
 
         /* Based on the 3ware driver translation table */
-        static unsigned char sense_table[][4] = {
+        static const unsigned char sense_table[][4] = {
                 /* BBD|ECC|ID|MAR */
                 {0xd1,          ABORTED_COMMAND, 0x00, 0x00},   // Device busy                  Aborted command
                 /* BBD|ECC|ID */
@@ -449,7 +449,7 @@ void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc,
                 {0x80,          MEDIUM_ERROR, 0x11, 0x04},      // Block marked bad               Medium error, unrecovered read error
                 {0xFF, 0xFF, 0xFF, 0xFF}, // END mark
         };
-        static unsigned char stat_table[][4] = {
+        static const unsigned char stat_table[][4] = {
                 /* Must be first because BUSY means no other bits valid */
                 {0x80,          ABORTED_COMMAND, 0x47, 0x00},   // Busy, fake parity for now
                 {0x20,          HARDWARE_ERROR,  0x00, 0x00},   // Device fault
@@ -1532,7 +1532,7 @@ unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf,
         return 0;
 }
 
-static const char *inq_83_str = "Linux ATA-SCSI simulator";
+static const char * const inq_83_str = "Linux ATA-SCSI simulator";
 
 /**
  *      ata_scsiop_inq_83 - Simulate INQUIRY EVPD page 83, device identity