NFS: Don't deadlock when cookie hashes collide

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In the very rare case where the readdir reply contains multiple cookies
that map to the same hash value, we can end up deadlocking waiting for a
page lock that we already hold. In this case we should fail the page
lock by using grab_cache_page_nowait().

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

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This commit is contained in:

Trond Myklebust 2022-03-21 22:27:13 -04:00

parent a43bf60444

commit 648a4548d6

1 changed files with 18 additions and 11 deletions

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fs/nfs/dir.c

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