deal with deadlock in d_walk()

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commit ca5358ef75 upstream.

... by not hitting rename_retry for reasons other than rename having
happened.  In other words, do _not_ restart when finding that
between unlocking the child and locking the parent the former got
into __dentry_kill().  Skip the killed siblings instead...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ben Hutchings <ben@decadent.org.uk>
[hujianyang: Backported to 3.14 refer to the work of Ben Hutchings in 3.2:
 - Adjust context to make __dentry_kill() apply to d_kill()]
Signed-off-by: hujianyang <hujianyang@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Al Viro 2014-10-26 19:31:10 -04:00 • committed by Greg Kroah-Hartman

parent d74ebe01a4

commit 9cf2961ba6

1 changed files with 16 additions and 15 deletions

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fs/dcache.c

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