dax: Use non-exclusive wait in wait_entry_unlocked()

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get_unlocked_entry() uses an exclusive wait because it is guaranteed to
eventually obtain the lock and follow on with an unlock+wakeup cycle.
The wait_entry_unlocked() path does not have the same guarantee. Rather
than open-code an extra wakeup, just switch to a non-exclusive wait.

Cc: Jan Kara <jack@suse.cz>
Cc: Matthew Wilcox <willy@infradead.org>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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Dan Williams 2018-12-21 11:35:53 -08:00

parent 7566ec393f

commit d8a706414a

1 changed files with 7 additions and 9 deletions

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fs/dax.c

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