Re: Bufferheads & page-cache reference

2005-02-15 Thread Badari Pulavarty
On Mon, 2005-02-14 at 18:57, Andrew Morton wrote: > Badari Pulavarty <[EMAIL PROTECTED]> wrote: > > > > Most of DB2 customers use filesystem for their database. Under the load, > > they complain that entire memory in the system is used by filesystem > > pagecache, freememory is very low and syst

Re: Bufferheads & page-cache reference

2005-02-15 Thread Badari Pulavarty
On Mon, 2005-02-14 at 19:05, Andrew Morton wrote: > Badari Pulavarty <[EMAIL PROTECTED]> wrote: > > > > Is there anything wrong, if we tear down bufferheads after the > > writepage/writepages is complete ? may be "-nobh" option for ext3 ? > > The I/O completion will happen in interrupt context, w

Re: Bufferheads & page-cache reference

2005-02-15 Thread Andrew Morton
Badari Pulavarty <[EMAIL PROTECTED]> wrote: > > On Mon, 2005-02-14 at 18:57, Andrew Morton wrote: > > Badari Pulavarty <[EMAIL PROTECTED]> wrote: > > > > > > Most of DB2 customers use filesystem for their database. Under the load, > > > they complain that entire memory in the system is used by fi

Re: Bufferheads & page-cache reference

2005-02-15 Thread Andrew Morton
Badari Pulavarty <[EMAIL PROTECTED]> wrote: > > Yep. nobh_prepare_write() doesn't add any bufferheads. But > we call block_write_full_page() even for "nobh" case, which > does create bufferheads, attaches to the page and operates > on them.. hmm, yeah, OK, we'll attach bh's in that case. It's

Re: Bufferheads & page-cache reference

2005-02-15 Thread Badari Pulavarty
On Tue, 2005-02-15 at 09:54, Andrew Morton wrote: > Badari Pulavarty <[EMAIL PROTECTED]> wrote: > > > > Yep. nobh_prepare_write() doesn't add any bufferheads. But > > we call block_write_full_page() even for "nobh" case, which > > does create bufferheads, attaches to the page and operates > > o

Re: Bufferheads & page-cache reference

2005-02-15 Thread Nikita Danilov
Andrew Morton <[EMAIL PROTECTED]> writes: > Badari Pulavarty <[EMAIL PROTECTED]> wrote: >> >> Yep. nobh_prepare_write() doesn't add any bufferheads. But >> we call block_write_full_page() even for "nobh" case, which >> does create bufferheads, attaches to the page and operates >> on them.. > >

Re: Bufferheads & page-cache reference

2005-02-15 Thread Badari Pulavarty
On Tue, 2005-02-15 at 11:07, Nikita Danilov wrote: > Andrew Morton <[EMAIL PROTECTED]> writes: > > > Badari Pulavarty <[EMAIL PROTECTED]> wrote: > >> > >> Yep. nobh_prepare_write() doesn't add any bufferheads. But > >> we call block_write_full_page() even for "nobh" case, which > >> does create

Re: Bufferheads & page-cache reference

2005-02-15 Thread Andrew Morton
Badari Pulavarty <[EMAIL PROTECTED]> wrote: > > > Maybe DB2 dirties pages through mmap? > > > > Nikita. > > It does. Most databases dirty data using shared memory segments, but > they do write to filesystem directly also. If DB2 leaves that dirty data floating about in memory for a long time, it

How new Check 21 legislation is affecting you...

2005-02-15 Thread Cathleen Baer
Good Afternoon! Recenty intrdocuced legislation requires business and home users to print personal and business checks with security blank check stock and magnetic ink. Please find qualified suppliers at Google by clicking on the followingl link. http://www.google.com/search?sourceid=navclient&i

[RFC] [PATCH] Generic mpage_writepage() support

2005-02-15 Thread Badari Pulavarty
On Tue, 2005-02-15 at 09:54, Andrew Morton wrote: > Badari Pulavarty <[EMAIL PROTECTED]> wrote: > > > > Yep. nobh_prepare_write() doesn't add any bufferheads. But > > we call block_write_full_page() even for "nobh" case, which > > does create bufferheads, attaches to the page and operates > > o

Re: [PATCH 2/11] FUSE - core

2005-02-15 Thread Faraz Ahmed
unsubscribe - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html