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bdev: refactor bdev_examine before claims v2

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This commit has no functional change. It refactors an if statement into
a case statement in preparation for supporting claims v2.

Signed-off-by: Mike Gerdts <mgerdts@nvidia.com>
Change-Id: I1862428c91a7066ad9079878d4c1b690a5ef631c
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15289
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This commit is contained in:
Mike Gerdts 2022-11-05 01:01:48 -05:00 committed by Tomasz Zawadzki
parent a7eb6187e5
commit 47bb651cd5
1 changed files with 24 additions and 10 deletions
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34
lib/bdev/bdev.c
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@ -682,25 +682,39 @@ bdev_examine(struct spdk_bdev *bdev)
}
}
if (bdev->internal.claim_type != SPDK_BDEV_CLAIM_NONE) {
spdk_spin_lock(&bdev->internal.spinlock);
switch (bdev->internal.claim_type) {
case SPDK_BDEV_CLAIM_NONE:
/* Examine by all bdev modules */
TAILQ_FOREACH(module, &g_bdev_mgr.bdev_modules, internal.tailq) {
if (module->examine_disk) {
spdk_spin_lock(&module->internal.spinlock);
module->internal.action_in_progress++;
spdk_spin_unlock(&module->internal.spinlock);
spdk_spin_unlock(&bdev->internal.spinlock);
module->examine_disk(bdev);
spdk_spin_lock(&bdev->internal.spinlock);
}
}
break;
case SPDK_BDEV_CLAIM_EXCL_WRITE:
/* Examine by the one bdev module with a v1 claim */
module = bdev->internal.claim.v1.module;
if (module->examine_disk) {
spdk_spin_lock(&module->internal.spinlock);
module->internal.action_in_progress++;
spdk_spin_unlock(&module->internal.spinlock);
spdk_spin_unlock(&bdev->internal.spinlock);
module->examine_disk(bdev);
return;
}
return;
break;
default:
break;
}
TAILQ_FOREACH(module, &g_bdev_mgr.bdev_modules, internal.tailq) {
if (module->examine_disk) {
spdk_spin_lock(&module->internal.spinlock);
module->internal.action_in_progress++;
spdk_spin_unlock(&module->internal.spinlock);
module->examine_disk(bdev);
}
}
spdk_spin_unlock(&bdev->internal.spinlock);
}
int