Thread (10 messages) 10 messages, 3 authors, 2021-10-08

Re: [PATCH 1/3] ext4: correct the left/middle/right debug message for binsearch

From: Jan Kara <jack@suse.cz>
Date: 2021-09-30 16:10:37

On Fri 03-09-21 14:27:46, yangerkun wrote:
The debuginfo for binsearch want to show the left/middle/right extent
while the process search for the goal block. However we show this info
after we change right or left.

Signed-off-by: yangerkun <redacted>
Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@suse.cz>

								Honza
quoted hunk ↗ jump to hunk
---
 fs/ext4/extents.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index c33e0a2cb6c3..7ae32078b48f 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -713,13 +713,14 @@ ext4_ext_binsearch_idx(struct inode *inode,
 	r = EXT_LAST_INDEX(eh);
 	while (l <= r) {
 		m = l + (r - l) / 2;
+		ext_debug(inode, "%p(%u):%p(%u):%p(%u) ", l,
+			  le32_to_cpu(l->ei_block), m, le32_to_cpu(m->ei_block),
+			  r, le32_to_cpu(r->ei_block));
+
 		if (block < le32_to_cpu(m->ei_block))
 			r = m - 1;
 		else
 			l = m + 1;
-		ext_debug(inode, "%p(%u):%p(%u):%p(%u) ", l,
-			  le32_to_cpu(l->ei_block), m, le32_to_cpu(m->ei_block),
-			  r, le32_to_cpu(r->ei_block));
 	}
 
 	path->p_idx = l - 1;
@@ -781,13 +782,14 @@ ext4_ext_binsearch(struct inode *inode,
 
 	while (l <= r) {
 		m = l + (r - l) / 2;
+		ext_debug(inode, "%p(%u):%p(%u):%p(%u) ", l,
+			  le32_to_cpu(l->ee_block), m, le32_to_cpu(m->ee_block),
+			  r, le32_to_cpu(r->ee_block));
+
 		if (block < le32_to_cpu(m->ee_block))
 			r = m - 1;
 		else
 			l = m + 1;
-		ext_debug(inode, "%p(%u):%p(%u):%p(%u) ", l,
-			  le32_to_cpu(l->ee_block), m, le32_to_cpu(m->ee_block),
-			  r, le32_to_cpu(r->ee_block));
 	}
 
 	path->p_ext = l - 1;
-- 
2.31.1
-- 
Jan Kara [off-list ref]
SUSE Labs, CR
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