diff options
| author | Julia Lawall <julia@diku.dk> | 2008-09-22 23:57:16 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 08:56:19 +0200 |
| commit | 061837bc8687edc2739ef02f721b7ae0b8076390 (patch) | |
| tree | e1c59ea7212949a91b2cf19ed125c0db24052b29 /drivers/block/cciss.c | |
| parent | cciss: Fix cciss SCSI rescan code to better notice device changes (diff) | |
| download | linux-061837bc8687edc2739ef02f721b7ae0b8076390.tar.xz linux-061837bc8687edc2739ef02f721b7ae0b8076390.zip | |
drivers/block: Use DIV_ROUND_UP
The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.
An extract of the semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@haskernel@
@@
#include <linux/kernel.h>
@depends on haskernel@
expression n,d;
@@
(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
|
- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/block/cciss.c')
| -rw-r--r-- | drivers/block/cciss.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index b73116ef9236..1e1f9153000c 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -3460,8 +3460,8 @@ static int __devinit cciss_init_one(struct pci_dev *pdev, hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); hba[i]->cmd_pool_bits = - kmalloc(((hba[i]->nr_cmds + BITS_PER_LONG - - 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL); + kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) + * sizeof(unsigned long), GFP_KERNEL); hba[i]->cmd_pool = (CommandList_struct *) pci_alloc_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), @@ -3493,8 +3493,8 @@ static int __devinit cciss_init_one(struct pci_dev *pdev, /* command and error info recs zeroed out before they are used */ memset(hba[i]->cmd_pool_bits, 0, - ((hba[i]->nr_cmds + BITS_PER_LONG - - 1) / BITS_PER_LONG) * sizeof(unsigned long)); + DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) + * sizeof(unsigned long)); hba[i]->num_luns = 0; hba[i]->highest_lun = -1; |