This is a note to let you know that I've just added the patch titled
ext4: increase wait time needed before reuse of deleted inode numbers
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ext4-increase-wait-time-needed-before-reuse-of-delet.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3a63d11d5804d2ac7a81fe102e3e4122b68cc042
Author: Theodore Ts'o <tytso@xxxxxxx>
Date: Mon Apr 13 22:30:52 2020 -0400
ext4: increase wait time needed before reuse of deleted inode numbers
[ Upstream commit a17a9d935dc4a50acefaf319d58030f1da7f115a ]
Current wait times have proven to be too short to protect against inode
reuses that lead to metadata inconsistencies.
Now that we will retry the inode allocation if we can't find any
recently deleted inodes, it's a lot safer to increase the recently
deleted time from 5 seconds to a minute.
Link: https://lore.kernel.org/r/20200414023925.273867-1-tytso@xxxxxxx
Google-Bug-Id: 36602237
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index a6288730210e8..64b6549dd9016 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -660,7 +660,7 @@ static int find_group_other(struct super_block *sb, struct inode *parent,
* block has been written back to disk. (Yes, these values are
* somewhat arbitrary...)
*/
-#define RECENTCY_MIN 5
+#define RECENTCY_MIN 60
#define RECENTCY_DIRTY 300
static int recently_deleted(struct super_block *sb, ext4_group_t group, int ino)
