9p: saner ->write_end() on failing copy into non-uptodate page

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If we had a short copy into an uptodate page, there's no reason
whatsoever to zero anything; OTOH, if that page had _not_ been
uptodate, we must have been trying to overwrite it completely
and got a short copy.  In that case, overwriting the end with
zeroes, marking uptodate and sending to server is just plain
wrong.  Just unlock, keep it non-uptodate and return 0.

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

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Al Viro 2016-08-29 20:56:35 -04:00

parent 43388b21e7

commit 77469c3f57

1 changed files with 4 additions and 11 deletions

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fs/9p/vfs_addr.c

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