Commit c7badc90 authored by Tejun Heo's avatar Tejun Heo Committed by Linus Torvalds
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scsi: use %*pb[l] to print bitmaps including cpumasks and nodemasks

printk and friends can now format bitmaps using '%*pb[l]'.  cpumask
and nodemask also provide cpumask_pr_args() and nodemask_pr_args()
respectively which can be used to generate the two printf arguments
necessary to format the specified cpu/nodemask.

* map_show()'s return value is too high by one and the function could
  modify beyond the end of the buffer when the formatted text is long

Signed-off-by: default avatarTejun Heo <>
Cc: "James E.J. Bottomley" <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent 0b480037
......@@ -4658,10 +4658,10 @@ static ssize_t map_show(struct device_driver *ddp, char *buf)
return scnprintf(buf, PAGE_SIZE, "0-%u\n",
count = bitmap_scnlistprintf(buf, PAGE_SIZE, map_storep, map_size);
count = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
(int)map_size, map_storep);
buf[count++] = '\n';
buf[count++] = 0;
buf[count] = '\0';
return count;
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