* why is the jiffies 128 in jffs2_find_gc_block() in gc.c of jffs2.
@ 2005-07-21 17:13 krishna
2005-07-21 18:03 ` Josh Boyer
0 siblings, 1 reply; 2+ messages in thread
From: krishna @ 2005-07-21 17:13 UTC (permalink / raw)
To: Linux Kernel
Hi,
Can any one tell me
why is the jiffies _128_ in jffs2_find_gc_block() in gc.c of jffs2.
Regards,
Krishna Chaitanya
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: why is the jiffies 128 in jffs2_find_gc_block() in gc.c of jffs2.
2005-07-21 17:13 why is the jiffies 128 in jffs2_find_gc_block() in gc.c of jffs2 krishna
@ 2005-07-21 18:03 ` Josh Boyer
0 siblings, 0 replies; 2+ messages in thread
From: Josh Boyer @ 2005-07-21 18:03 UTC (permalink / raw)
To: krishna; +Cc: Linux Kernel
On Thu, 2005-07-21 at 22:43 +0530, krishna wrote:
> Hi,
>
> Can any one tell me
> why is the jiffies _128_ in jffs2_find_gc_block() in gc.c of jffs2.
jiffies isn't set in that function. The value of jiffies is modded by
128. Since jiffies is a volatile value, the value of n is usually
different on each call of that function. This value is used to pick an
eraseblock to garbage collect out of a series of different lists. This
is done to help with effective wear leveling of flash eraseblocks.
josh
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2005-07-21 17:13 why is the jiffies 128 in jffs2_find_gc_block() in gc.c of jffs2 krishna
2005-07-21 18:03 ` Josh Boyer
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