From: Peter Huewe <peterhuewe@xxxxxx>
Sparse complains:
+ fs/autofs4/root.c:409:9: sparse: context imbalance in
'autofs4_d_automount' - different lock contexts for basic block
This was introduced by commit
f55fb0c243 autofs4 - dont clear DCACHE_NEED_AUTOMOUNT on rootless mount
The function autofs4_d_automount can be left with the (&sbi->fs_lock)
held if sbi->version <= 4 and simple_empty(dentry) == false so the warning seems valid.
--> Add an spin_unlock in this case before we jump to done
Unfortunately compile tested only.
Reported-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
Signed-off-by: Peter Huewe <peterhuewe@xxxxxx>
Acked-by: Ian Kent <raven@xxxxxxxxxx>
---
fs/autofs4/root.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 230bd2a..9bd1625 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -383,8 +383,10 @@ static struct vfsmount *autofs4_d_automount(struct path *path)
goto done;
}
} else {
- if (!simple_empty(dentry))
+ if (!simple_empty(dentry)) {
+ spin_unlock(&sbi->fs_lock);
goto done;
+ }
}
ino->flags |= AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
--
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