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fs: annotate cdev_lock with __cacheline_aligned_in_smp

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No need for the crapper to be susceptible to false-sharing.

Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Link: https://patch.msgid.link/20251203095508.291073-1-mjguzik@gmail.com
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Mateusz Guzik
2025-12-03 10:55:08 +01:00
committed by Christian Brauner
parent 0f5bb0cfb0
commit 5854fc6391
1 changed files with 1 additions and 1 deletions
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fs/char_dev.c
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@@ -343,7 +343,7 @@ void __unregister_chrdev(unsigned int major, unsigned int baseminor,
kfree(cd);
}
static DEFINE_SPINLOCK(cdev_lock);
static __cacheline_aligned_in_smp DEFINE_SPINLOCK(cdev_lock);
static struct kobject *cdev_get(struct cdev *p)
{