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tcmu: merge common block release code

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Have unmap_thread_fn use tcmu_blocks_release.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Mike Christie 2017-11-28 12:40:28 -06:00 committed by Nicholas Bellinger
parent 26d2b3106f
commit bf99ec1332
1 changed files with 8 additions and 16 deletions
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24
drivers/target/target_core_user.c
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@ -1302,21 +1302,19 @@ static int tcmu_check_and_free_pending_cmd(struct tcmu_cmd *cmd)
return -EINVAL;
}
static void tcmu_blocks_release(struct tcmu_dev *udev)
static void tcmu_blocks_release(struct radix_tree_root *blocks,
int start, int end)
{
int i;
struct page *page;
/* Try to release all block pages */
mutex_lock(&udev->cmdr_lock);
for (i = 0; i <= udev->dbi_max; i++) {
page = radix_tree_delete(&udev->data_blocks, i);
for (i = start; i < end; i++) {
page = radix_tree_delete(blocks, i);
if (page) {
__free_page(page);
atomic_dec(&global_db_count);
}
}
mutex_unlock(&udev->cmdr_lock);
}
static void tcmu_dev_kref_release(struct kref *kref)
@ -1340,7 +1338,9 @@ static void tcmu_dev_kref_release(struct kref *kref)
spin_unlock_irq(&udev->commands_lock);
WARN_ON(!all_expired);
tcmu_blocks_release(udev);
mutex_lock(&udev->cmdr_lock);
tcmu_blocks_release(&udev->data_blocks, 0, udev->dbi_max + 1);
mutex_unlock(&udev->cmdr_lock);
call_rcu(&dev->rcu_head, tcmu_dev_call_rcu);
}
@ -1978,8 +1978,6 @@ static int unmap_thread_fn(void *data)
struct tcmu_dev *udev;
loff_t off;
uint32_t start, end, block;
struct page *page;
int i;
while (!kthread_should_stop()) {
DEFINE_WAIT(__wait);
@ -2027,13 +2025,7 @@ static int unmap_thread_fn(void *data)
unmap_mapping_range(udev->inode->i_mapping, off, 0, 1);
/* Release the block pages */
for (i = start; i < end; i++) {
page = radix_tree_delete(&udev->data_blocks, i);
if (page) {
__free_page(page);
atomic_dec(&global_db_count);
}
}
tcmu_blocks_release(&udev->data_blocks, start, end);
mutex_unlock(&udev->cmdr_lock);
}