Re: JFFS2 mounting performance improvement

["Balaji" <balajika@blr.pin.philips.com>]

Best Regards
====================================
 Balaji Kadloor
 Philips Semiconductors Division (HIC-B)
 Philips Innovation Campus
1 Murphy Rd, Ulsoor, Bangalore - 560008, INDIA
Tel: (91)-80-25579000 X2269,
Fax: (91)-80-25560580
====================================

"  Success doesn't go to the Faster or the Stonger Man.
   Sooner or Later,the man who wins is the man who thinks HE CAN "
----- Original Message ----- 
From: "Davide CASCONE" <davide.cascone@st.com>
To: <linux-mtd@lists.infradead.org>
Sent: Tuesday, June 20, 2006 1:55 PM
Subject: JFFS2 mounting performance improvement


>
> It seems that during the JFFS2 mounting, the file system uses the function
cfi_intelext_point (in jffs2_scan_medium function) to point to the flash
memory. This function refers to the flash memory using the virtual address
(map->virt). But if the flash is cached and the burst mode is enabled, it
should be better to refer to the flash with the address map->cached (in the
same way of cfi_intelext_read function, that calls the map_copy_from
function, in which there is a check to verify if the flash is cached). This
improves in a considerable way the performance during the mounting phase,
reducing the mounting time.
> What do you think about? Do you agree with me? Do you know if there are
other points in JFFS2 code that uses the virtual address map->virt instead
of map->cached.
>
> Best Regards,
> Davide
>
>
>
>
>
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