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| author | Wenwei Tao <ww.tao0320@gmail.com> | 2016-03-03 15:06:38 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-03-19 02:10:38 +0100 |
| commit | da1e284919b0b99c5bf0618b6c98cbaf2c17e62e (patch) | |
| tree | ef1d8fe8821376dd57fbd4d3319a747841df38e6 /drivers/lightnvm/core.c | |
| parent | lightnvm: specify target's logical address area (diff) | |
| download | linux-da1e284919b0b99c5bf0618b6c98cbaf2c17e62e.tar.xz linux-da1e284919b0b99c5bf0618b6c98cbaf2c17e62e.zip | |
lightnvm: add a bitmap of luns
Add a bitmap of luns to indicate the status
of luns: inuse/available. When create targets
do the necessary check to avoid allocating luns
that are already allocated.
Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Freed dev->lun_map if nvm_core_init later failed in the init process.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/lightnvm/core.c')
| -rw-r--r-- | drivers/lightnvm/core.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c index 2925fd0b82bb..0dc9a80adb94 100644 --- a/drivers/lightnvm/core.c +++ b/drivers/lightnvm/core.c @@ -464,6 +464,10 @@ static int nvm_core_init(struct nvm_dev *dev) dev->nr_luns = dev->luns_per_chnl * dev->nr_chnls; dev->total_secs = dev->nr_luns * dev->sec_per_lun; + dev->lun_map = kcalloc(BITS_TO_LONGS(dev->nr_luns), + sizeof(unsigned long), GFP_KERNEL); + if (!dev->lun_map) + return -ENOMEM; INIT_LIST_HEAD(&dev->online_targets); mutex_init(&dev->mlock); spin_lock_init(&dev->lock); @@ -586,6 +590,7 @@ int nvm_register(struct request_queue *q, char *disk_name, return 0; err_init: + kfree(dev->lun_map); kfree(dev); return ret; } @@ -608,6 +613,7 @@ void nvm_unregister(char *disk_name) up_write(&nvm_lock); nvm_exit(dev); + kfree(dev->lun_map); kfree(dev); } EXPORT_SYMBOL(nvm_unregister); |