From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Matthew Wilcox To: linux-kernel@vger.kernel.org Cc: Matthew Wilcox , Jens Axboe , Johannes Thumshirn , Ming Lei , Sagi Grimberg , Hannes Reinecke , Christophe JAILLET , Christos Gkekas , Bart Van Assche , Joe Perches , linux-block@vger.kernel.org Subject: [PATCH 04/26] mtip32xx: Convert to new IDA API Date: Thu, 21 Jun 2018 14:28:13 -0700 Message-Id: <20180621212835.5636-5-willy@infradead.org> In-Reply-To: <20180621212835.5636-1-willy@infradead.org> References: <20180621212835.5636-1-willy@infradead.org> List-ID: Removes a use of ida_pre_get() and a personalised spinlock. Signed-off-by: Matthew Wilcox --- drivers/block/mtip32xx/mtip32xx.c | 29 ++++++----------------------- 1 file changed, 6 insertions(+), 23 deletions(-) diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index c73626decb46..2b6d6bce76df 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -118,7 +118,6 @@ static struct dentry *dfs_device_status; static u32 cpu_use[NR_CPUS]; -static DEFINE_SPINLOCK(rssd_index_lock); static DEFINE_IDA(rssd_index_ida); static int mtip_block_initialize(struct driver_data *dd); @@ -3768,20 +3767,10 @@ static int mtip_block_initialize(struct driver_data *dd) goto alloc_disk_error; } - /* Generate the disk name, implemented same as in sd.c */ - do { - if (!ida_pre_get(&rssd_index_ida, GFP_KERNEL)) { - rv = -ENOMEM; - goto ida_get_error; - } - - spin_lock(&rssd_index_lock); - rv = ida_get_new(&rssd_index_ida, &index); - spin_unlock(&rssd_index_lock); - } while (rv == -EAGAIN); - - if (rv) + rv = ida_alloc(&rssd_index_ida, GFP_KERNEL); + if (rv < 0) goto ida_get_error; + index = rv; rv = rssd_disk_name_format("rssd", index, @@ -3923,9 +3912,7 @@ static int mtip_block_initialize(struct driver_data *dd) block_queue_alloc_tag_error: mtip_hw_debugfs_exit(dd); disk_index_error: - spin_lock(&rssd_index_lock); - ida_remove(&rssd_index_ida, index); - spin_unlock(&rssd_index_lock); + ida_free(&rssd_index_ida, index); ida_get_error: put_disk(dd->disk); @@ -4013,9 +4000,7 @@ static int mtip_block_remove(struct driver_data *dd) } dd->disk = NULL; - spin_lock(&rssd_index_lock); - ida_remove(&rssd_index_ida, dd->index); - spin_unlock(&rssd_index_lock); + ida_free(&rssd_index_ida, dd->index); /* De-initialize the protocol layer. */ mtip_hw_exit(dd); @@ -4055,9 +4040,7 @@ static int mtip_block_shutdown(struct driver_data *dd) dd->queue = NULL; } - spin_lock(&rssd_index_lock); - ida_remove(&rssd_index_ida, dd->index); - spin_unlock(&rssd_index_lock); + ida_free(&rssd_index_ida, dd->index); return 0; } -- 2.17.1