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author | 2018-10-30 15:35:54 +0800 | |
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committer | 2018-12-18 09:02:26 -0500 | |
commit | ef9923739e6d2233dc16aba70b7d81767d85cfcb (patch) | |
tree | b092df61a40945840531dbcc05b4ca67ba5a459b /drivers/md/dm-bufio.c | |
parent | dm writecache: fix typo in error msg for creating writecache_flush_thread (diff) | |
download | linux-ef9923739e6d2233dc16aba70b7d81767d85cfcb.tar.gz linux-ef9923739e6d2233dc16aba70b7d81767d85cfcb.tar.bz2 linux-ef9923739e6d2233dc16aba70b7d81767d85cfcb.zip |
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* Hashtable has been replaced by rbtree to manage buffers.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/dm-bufio.c')
-rw-r--r-- | drivers/md/dm-bufio.c | 12 |
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 |