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nfsd4: don't close read-write opens too soon 

Don't actually close any opens until we don't need them at all.

This means being left with write access when it's not really necessary,
but that's better than putting a file that might still have posix locks
held on it, as we have been.

Reported-by: Toralf Förster <toralf.foerster@gmx.de>
Cc: stable@kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2013-03-28 20:37:14 -04:00
parent eb2099f31b
commit 0c7c3e67ab
1 changed files with 1 additions and 7 deletions
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8
fs/nfsd/nfs4state.c
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@ -307,13 +307,7 @@ static void __nfs4_file_put_access(struct nfs4_file *fp, int oflag)
{
if (atomic_dec_and_test(&fp->fi_access[oflag])) {
nfs4_file_put_fd(fp, oflag);
/*
* It's also safe to get rid of the RDWR open *if*
* we no longer have need of the other kind of access
* or if we already have the other kind of open:
*/
if (fp->fi_fds[1-oflag]
|| atomic_read(&fp->fi_access[1 - oflag]) == 0)
if (atomic_read(&fp->fi_access[1 - oflag]) == 0)
nfs4_file_put_fd(fp, O_RDWR);
}
}