take the common part of ep_eventpoll_poll() and ep_item_poll() into helper

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The only reason why ep_item_poll() can't simply call ep_eventpoll_poll()
(or, better yet, call vfs_poll() in all cases) is that we need to tell
lockdep how deep into the hierarchy of ->mtx we are.  So let's add
a variant of ep_eventpoll_poll() that would take depth explicitly
and turn ep_eventpoll_poll() into wrapper for that.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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This commit is contained in:

Al Viro 2020-09-26 18:32:48 -04:00

parent 85353e919f

commit ad9366b136

1 changed files with 27 additions and 30 deletions

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fs/eventpoll.c

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