eventpoll: use hlist_is_singular_node() in __ep_remove()

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Replace the open-coded "epi is the only entry in file->f_ep" check
with hlist_is_singular_node(). Same semantics, and the helper avoids
the head-cacheline access in the common false case.

Link: https://patch.msgid.link/20260423-work-epoll-uaf-v1-1-2470f9eec0f5@kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>

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Christian Brauner 2026-04-23 11:56:04 +02:00

parent 9a466382c5

commit 3d9fd0abc9

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fs/eventpoll.c

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