Patch "afs: Fix the dynamic root's d_delete to always delete unused dentries" has been added to the 5.15-stable tree

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This is a note to let you know that I've just added the patch titled

    afs: Fix the dynamic root's d_delete to always delete unused dentries

to the 5.15-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:
     afs-fix-the-dynamic-root-s-d_delete-to-always-delete.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit fff9418663f9e85daa0dbe68c13efca84ced0fcd
Author: David Howells <dhowells@xxxxxxxxxx>
Date:   Mon Dec 11 15:08:57 2023 +0000

    afs: Fix the dynamic root's d_delete to always delete unused dentries
    
    [ Upstream commit 71f8b55bc30e82d6355e07811213d847981a32e2 ]
    
    Fix the afs dynamic root's d_delete function to always delete unused
    dentries rather than only deleting them if they're positive.  With things
    as they stand upstream, negative dentries stemming from failed DNS lookups
    stick around preventing retries.
    
    Fixes: 66c7e1d319a5 ("afs: Split the dynroot stuff out and give it its own ops tables")
    Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
    Tested-by: Markus Suvanto <markus.suvanto@xxxxxxxxx>
    cc: Marc Dionne <marc.dionne@xxxxxxxxxxxx>
    cc: linux-afs@xxxxxxxxxxxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/fs/afs/dynroot.c b/fs/afs/dynroot.c
index b35c6081dbfe1..4ddc4846a8072 100644
--- a/fs/afs/dynroot.c
+++ b/fs/afs/dynroot.c
@@ -251,20 +251,9 @@ static int afs_dynroot_d_revalidate(struct dentry *dentry, unsigned int flags)
 	return 1;
 }
 
-/*
- * Allow the VFS to enquire as to whether a dentry should be unhashed (mustn't
- * sleep)
- * - called from dput() when d_count is going to 0.
- * - return 1 to request dentry be unhashed, 0 otherwise
- */
-static int afs_dynroot_d_delete(const struct dentry *dentry)
-{
-	return d_really_is_positive(dentry);
-}
-
 const struct dentry_operations afs_dynroot_dentry_operations = {
 	.d_revalidate	= afs_dynroot_d_revalidate,
-	.d_delete	= afs_dynroot_d_delete,
+	.d_delete	= always_delete_dentry,
 	.d_release	= afs_d_release,
 	.d_automount	= afs_d_automount,
 };




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