From: "Matias Bjørling" <mb@lightnvm.io>
To: axboe@fb.com
Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
"Matias Bjørling" <mb@lightnvm.io>
Subject: [GIT PULL 4/8] lightnvm: pblk: Switch to use new generic UUID API
Date: Mon, 11 Feb 2019 13:25:05 +0100 [thread overview]
Message-ID: <20190211122509.19910-5-mb@lightnvm.io> (raw)
In-Reply-To: <20190211122509.19910-1-mb@lightnvm.io>
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
There are new types and helpers that are supposed to be used in new code.
As a preparation to get rid of legacy types and API functions do
the conversion here.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Javier González <javier@javigon.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
---
drivers/lightnvm/pblk-core.c | 5 +++--
drivers/lightnvm/pblk-init.c | 2 +-
drivers/lightnvm/pblk-recovery.c | 8 +++++---
drivers/lightnvm/pblk.h | 10 +---------
4 files changed, 10 insertions(+), 15 deletions(-)
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index 1b5ff51faa63..2a9e9facf44f 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -1065,7 +1065,7 @@ static int pblk_line_init_metadata(struct pblk *pblk, struct pblk_line *line,
bitmap_set(line->lun_bitmap, 0, lm->lun_bitmap_len);
smeta_buf->header.identifier = cpu_to_le32(PBLK_MAGIC);
- memcpy(smeta_buf->header.uuid, pblk->instance_uuid, 16);
+ guid_copy((guid_t *)&smeta_buf->header.uuid, &pblk->instance_uuid);
smeta_buf->header.id = cpu_to_le32(line->id);
smeta_buf->header.type = cpu_to_le16(line->type);
smeta_buf->header.version_major = SMETA_VERSION_MAJOR;
@@ -1874,7 +1874,8 @@ void pblk_line_close_meta(struct pblk *pblk, struct pblk_line *line)
if (le32_to_cpu(emeta_buf->header.identifier) != PBLK_MAGIC) {
emeta_buf->header.identifier = cpu_to_le32(PBLK_MAGIC);
- memcpy(emeta_buf->header.uuid, pblk->instance_uuid, 16);
+ guid_copy((guid_t *)&emeta_buf->header.uuid,
+ &pblk->instance_uuid);
emeta_buf->header.id = cpu_to_le32(line->id);
emeta_buf->header.type = cpu_to_le16(line->type);
emeta_buf->header.version_major = EMETA_VERSION_MAJOR;
diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index eb0135c77805..8b643d0bffae 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -130,7 +130,7 @@ static int pblk_l2p_recover(struct pblk *pblk, bool factory_init)
struct pblk_line *line = NULL;
if (factory_init) {
- pblk_setup_uuid(pblk);
+ guid_gen(&pblk->instance_uuid);
} else {
line = pblk_recov_l2p(pblk);
if (IS_ERR(line)) {
diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
index 5ee20da7bdb3..6761d2afa4d0 100644
--- a/drivers/lightnvm/pblk-recovery.c
+++ b/drivers/lightnvm/pblk-recovery.c
@@ -703,11 +703,13 @@ struct pblk_line *pblk_recov_l2p(struct pblk *pblk)
/* The first valid instance uuid is used for initialization */
if (!valid_uuid) {
- memcpy(pblk->instance_uuid, smeta_buf->header.uuid, 16);
+ guid_copy(&pblk->instance_uuid,
+ (guid_t *)&smeta_buf->header.uuid);
valid_uuid = 1;
}
- if (memcmp(pblk->instance_uuid, smeta_buf->header.uuid, 16)) {
+ if (!guid_equal(&pblk->instance_uuid,
+ (guid_t *)&smeta_buf->header.uuid)) {
pblk_debug(pblk, "ignore line %u due to uuid mismatch\n",
i);
continue;
@@ -737,7 +739,7 @@ struct pblk_line *pblk_recov_l2p(struct pblk *pblk)
}
if (!found_lines) {
- pblk_setup_uuid(pblk);
+ guid_gen(&pblk->instance_uuid);
spin_lock(&l_mg->free_lock);
WARN_ON_ONCE(!test_and_clear_bit(meta_line,
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index 0dd697ea201e..72ae8755764e 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -646,7 +646,7 @@ struct pblk {
int sec_per_write;
- unsigned char instance_uuid[16];
+ guid_t instance_uuid;
/* Persistent write amplification counters, 4kb sector I/Os */
atomic64_t user_wa; /* Sectors written by user */
@@ -1360,14 +1360,6 @@ static inline unsigned int pblk_get_secs(struct bio *bio)
return bio->bi_iter.bi_size / PBLK_EXPOSED_PAGE_SIZE;
}
-static inline void pblk_setup_uuid(struct pblk *pblk)
-{
- uuid_le uuid;
-
- uuid_le_gen(&uuid);
- memcpy(pblk->instance_uuid, uuid.b, 16);
-}
-
static inline char *pblk_disk_name(struct pblk *pblk)
{
struct gendisk *disk = pblk->disk;
--
2.19.1
next prev parent reply other threads:[~2019-02-11 12:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-11 12:25 [GIT PULL 0/8] lightnvm updates for 5.1 Matias Bjørling
2019-02-11 12:25 ` [GIT PULL 1/8] lightnvm: pblk: stop taking the free lock in in pblk_lines_free Matias Bjørling
2019-02-11 12:25 ` [GIT PULL 2/8] lightnvm: pblk: use vfree to free metadata on error path Matias Bjørling
2019-02-11 12:25 ` [GIT PULL 3/8] lightnvm: Use u64 instead of __le64 for CPU visible side Matias Bjørling
2019-02-11 12:25 ` Matias Bjørling [this message]
2019-02-11 12:25 ` [GIT PULL 5/8] lightnvm: pblk: fix TRACE_INCLUDE_PATH Matias Bjørling
2019-02-11 12:25 ` [GIT PULL 6/8] lightnvm: pblk: extend line wp balance check Matias Bjørling
2019-02-11 12:25 ` [GIT PULL 7/8] lightnvm: pblk: prevent stall due to wb threshold Matias Bjørling
2019-02-11 12:25 ` [GIT PULL 8/8] lightnvm: pblk: fix race condition on GC Matias Bjørling
2019-02-11 15:22 ` [GIT PULL 0/8] lightnvm updates for 5.1 Jens Axboe
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