samba memory utilization, writeback - and loopback mounts

Steven French sfrench at
Tue Sep 27 21:50:56 GMT 2005

This patch describes a "fix" to linux to reduce the hangs which can occur
in mounts over loopback to nfs server
/gnupatch at 3ee6d5caVqF30UJO9OB_iSm6LvtHMQ
This changes the behavior of balance_dirty_pages when running under the
file server.

The same could presumably occur when cifs (or smbfs) mounted to samba, and
probably does hit every once in a while based on testing reports, but this
could be harder for Samba to set (the flag PF_LESS_THROTTLE) for smbd
processes in user space.


Steve French
Senior Software Engineer
Linux Technology Center - IBM Austin
phone: 512-838-2294
email: sfrench at-sign us dot ibm dot com

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