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authorArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2012-03-07 18:56:29 +0200
committerArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2012-03-09 09:39:31 +0200
commitadd8287e3fa2160229117c9e1b7c9ca8cb661423 (patch)
treea26e58b7ca0b1cdd6b0ac23926e8adc958ef562b /drivers/mtd/ubi/wl.c
parenta29852be492d61001d86c6ebf5fff9b93d7b4be9 (diff)
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>
Diffstat (limited to 'drivers/mtd/ubi/wl.c')
-rw-r--r--drivers/mtd/ubi/wl.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 0696e36b053..8616f52144c 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -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.
* @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
- * @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 ubi_wl_entry *e;
+ int max;
e = rb_entry(rb_first(root), struct ubi_wl_entry, u.rb);
- max += e->ec;
+ max = e->ec + diff;
p = root->rb_node;
while (p) {