namei: saner calling conventions for filename_parentat()

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a) make it reject ERR_PTR() for name
b) make it putname(name) on all other failure exits
c) make it return name on success

again, simplifies the callers

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

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Al Viro 2015-05-12 17:32:54 -04:00

parent 181c37b6e4

commit 5c31b6cedb

1 changed files with 22 additions and 38 deletions

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fs/namei.c

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