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authorShenghui Wang <shhuiw@foxmail.com>2018-10-30 15:35:54 +0800
committerMike Snitzer <snitzer@redhat.com>2018-12-18 09:02:26 -0500
commitef9923739e6d2233dc16aba70b7d81767d85cfcb (patch)
treeb092df61a40945840531dbcc05b4ca67ba5a459b /drivers/md
parente8ea141a0f5e1d7b23f47d10c480d4fc55caaf14 (diff)
dm bufio: update comment in dm-bufio.c
* Hashtable has been replaced by rbtree to manage buffers. Update the comment. * Fix typo in the comment for dm_bufio_issue_flush Signed-off-by: Shenghui Wang <shhuiw@foxmail.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/dm-bufio.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
index dc385b70e4c3..0e9fcceaefd2 100644
--- a/drivers/md/dm-bufio.c
+++ b/drivers/md/dm-bufio.c
@@ -65,7 +65,7 @@
/*
* Linking of buffers:
- * All buffers are linked to cache_hash with their hash_list field.
+ * All buffers are linked to buffer_tree with their node field.
*
* Clean buffers that are not being written (B_WRITING not set)
* are linked to lru[LIST_CLEAN] with their lru_list field.
@@ -457,7 +457,7 @@ static void free_buffer(struct dm_buffer *b)
}
/*
- * Link buffer to the hash list and clean or dirty queue.
+ * Link buffer to the buffer tree and clean or dirty queue.
*/
static void __link_buffer(struct dm_buffer *b, sector_t block, int dirty)
{
@@ -472,7 +472,7 @@ static void __link_buffer(struct dm_buffer *b, sector_t block, int dirty)
}
/*
- * Unlink buffer from the hash list and dirty or clean queue.
+ * Unlink buffer from the buffer tree and dirty or clean queue.
*/
static void __unlink_buffer(struct dm_buffer *b)
{
@@ -993,7 +993,7 @@ static struct dm_buffer *__bufio_new(struct dm_bufio_client *c, sector_t block,
/*
* We've had a period where the mutex was unlocked, so need to
- * recheck the hash table.
+ * recheck the buffer tree.
*/
b = __find(c, block);
if (b) {
@@ -1327,7 +1327,7 @@ again:
EXPORT_SYMBOL_GPL(dm_bufio_write_dirty_buffers);
/*
- * Use dm-io to send and empty barrier flush the device.
+ * Use dm-io to send an empty barrier to flush the device.
*/
int dm_bufio_issue_flush(struct dm_bufio_client *c)
{
@@ -1356,7 +1356,7 @@ EXPORT_SYMBOL_GPL(dm_bufio_issue_flush);
* Then, we write the buffer to the original location if it was dirty.
*
* Then, if we are the only one who is holding the buffer, relink the buffer
- * in the hash queue for the new location.
+ * in the buffer tree for the new location.
*
* If there was someone else holding the buffer, we write it to the new
* location but not relink it, because that other user needs to have the buffer