[PATCH] reduce fd usage in smbd

[Dan Sledz]

>From the patch description:

 

It seems we are calling tdb_reopen_all for two reasons:

The first reason is to make sure we get a new seek pointer.  If the
platform

has a native pread and pwrite (libreplace didn't replace them), we don't

need a new seek pointer.

 

The second reason has to do with the TDB_CLEAR_IF_FIRST flag.  It
appears safe

to not have to reopen in this case since a child process will never be
the

first to open a tdb.  We will pay a penality if the child decides to
reopen a

tdb, but looking at the usages of tdb_reopen, that seems rare.

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