nfsd4: preallocate nfs4_file in process_open1()

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Creating a new file is an irrevocable step--once it's visible in the
filesystem, other processes may have seen it and done something with it,
and unlinking it wouldn't simply undo the effects of the create.

Therefore, in the case where OPEN creates a new file, we shouldn't do
the create until we know that the rest of the OPEN processing will
succeed.

For example, we should preallocate a struct file in case we need it
until waiting to allocate it till process_open2(), which is already too
late.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

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This commit is contained in:

J. Bruce Fields 2011-10-13 16:00:16 -04:00

parent d29b20cd58

commit 32513b40ef

2 changed files with 37 additions and 24 deletions

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62

fs/nfsd/nfs4state.c

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1

fs/nfsd/xdr4.h

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