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UBI: fix documentation and improve readability 

The "max" parameter of 'find_wl_entry()' was documented incorrectly and
it actually means the maximum possible difference from the smallest erase
counter. Rename it to "diff" instead, and amend the documentation.

Reported-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Reviewed-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
This commit is contained in:
Artem Bityutskiy 2012-03-07 18:56:29 +02:00
parent a29852be49
commit add8287e3f
1 changed files with 5 additions and 4 deletions
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9
drivers/mtd/ubi/wl.c
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@ -350,18 +350,19 @@ static void prot_queue_add(struct ubi_device *ubi, struct ubi_wl_entry *e)
/** /**
* find_wl_entry - find wear-leveling entry closest to certain erase counter. * find_wl_entry - find wear-leveling entry closest to certain erase counter.
* @root: the RB-tree where to look for * @root: the RB-tree where to look for
* @max: highest possible erase counter * @diff: maximum possible difference from the smallest erase counter
* *
* This function looks for a wear leveling entry with erase counter closest to * This function looks for a wear leveling entry with erase counter closest to
* @max and less than @max. * min + @diff, where min is the smallest erase counter.
*/ */
static struct ubi_wl_entry *find_wl_entry(struct rb_root *root, int max) static struct ubi_wl_entry *find_wl_entry(struct rb_root *root, int diff)
{ {
struct rb_node *p; struct rb_node *p;
struct ubi_wl_entry *e; struct ubi_wl_entry *e;
int max;
e = rb_entry(rb_first(root), struct ubi_wl_entry, u.rb); e = rb_entry(rb_first(root), struct ubi_wl_entry, u.rb);
max += e->ec; max = e->ec + diff;
p = root->rb_node; p = root->rb_node;
while (p) { while (p) {