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block: constify struct blk_integrity_profile 

blk_integrity_profile's are never modified, so mark them 'const' so that
they are placed in .rodata and benefit from memory protection.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Eric Biggers 2017-03-24 18:03:48 -07:00 committed by Jens Axboe
parent 1be7d2073e
commit 869ab90f0a
4 changed files with 14 additions and 14 deletions
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2
block/blk-integrity.c
View File

@ -389,7 +389,7 @@ static int blk_integrity_nop_fn(struct blk_integrity_iter *iter)
return 0; return 0;
} }
static struct blk_integrity_profile nop_profile = { static const struct blk_integrity_profile nop_profile = {
.name = "nop", .name = "nop",
.generate_fn = blk_integrity_nop_fn, .generate_fn = blk_integrity_nop_fn,
.verify_fn = blk_integrity_nop_fn, .verify_fn = blk_integrity_nop_fn,

8
block/t10-pi.c
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@ -160,28 +160,28 @@ static int t10_pi_type3_verify_ip(struct blk_integrity_iter *iter)
return t10_pi_verify(iter, t10_pi_ip_fn, 3); return t10_pi_verify(iter, t10_pi_ip_fn, 3);
} }
struct blk_integrity_profile t10_pi_type1_crc = { const struct blk_integrity_profile t10_pi_type1_crc = {
.name = "T10-DIF-TYPE1-CRC", .name = "T10-DIF-TYPE1-CRC",
.generate_fn = t10_pi_type1_generate_crc, .generate_fn = t10_pi_type1_generate_crc,
.verify_fn = t10_pi_type1_verify_crc, .verify_fn = t10_pi_type1_verify_crc,
}; };
EXPORT_SYMBOL(t10_pi_type1_crc); EXPORT_SYMBOL(t10_pi_type1_crc);
struct blk_integrity_profile t10_pi_type1_ip = { const struct blk_integrity_profile t10_pi_type1_ip = {
.name = "T10-DIF-TYPE1-IP", .name = "T10-DIF-TYPE1-IP",
.generate_fn = t10_pi_type1_generate_ip, .generate_fn = t10_pi_type1_generate_ip,
.verify_fn = t10_pi_type1_verify_ip, .verify_fn = t10_pi_type1_verify_ip,
}; };
EXPORT_SYMBOL(t10_pi_type1_ip); EXPORT_SYMBOL(t10_pi_type1_ip);
struct blk_integrity_profile t10_pi_type3_crc = { const struct blk_integrity_profile t10_pi_type3_crc = {
.name = "T10-DIF-TYPE3-CRC", .name = "T10-DIF-TYPE3-CRC",
.generate_fn = t10_pi_type3_generate_crc, .generate_fn = t10_pi_type3_generate_crc,
.verify_fn = t10_pi_type3_verify_crc, .verify_fn = t10_pi_type3_verify_crc,
}; };
EXPORT_SYMBOL(t10_pi_type3_crc); EXPORT_SYMBOL(t10_pi_type3_crc);
struct blk_integrity_profile t10_pi_type3_ip = { const struct blk_integrity_profile t10_pi_type3_ip = {
.name = "T10-DIF-TYPE3-IP", .name = "T10-DIF-TYPE3-IP",
.generate_fn = t10_pi_type3_generate_ip, .generate_fn = t10_pi_type3_generate_ip,
.verify_fn = t10_pi_type3_verify_ip, .verify_fn = t10_pi_type3_verify_ip,

2
include/linux/genhd.h
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@ -159,7 +159,7 @@ struct badblocks;
#if defined(CONFIG_BLK_DEV_INTEGRITY) #if defined(CONFIG_BLK_DEV_INTEGRITY)
struct blk_integrity { struct blk_integrity {
struct blk_integrity_profile *profile; const struct blk_integrity_profile *profile;
unsigned char flags; unsigned char flags;
unsigned char tuple_size; unsigned char tuple_size;
unsigned char interval_exp; unsigned char interval_exp;

8
include/linux/t10-pi.h
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@ -34,9 +34,9 @@ struct t10_pi_tuple {
}; };
extern struct blk_integrity_profile t10_pi_type1_crc; extern const struct blk_integrity_profile t10_pi_type1_crc;
extern struct blk_integrity_profile t10_pi_type1_ip; extern const struct blk_integrity_profile t10_pi_type1_ip;
extern struct blk_integrity_profile t10_pi_type3_crc; extern const struct blk_integrity_profile t10_pi_type3_crc;
extern struct blk_integrity_profile t10_pi_type3_ip; extern const struct blk_integrity_profile t10_pi_type3_ip;
#endif #endif