* 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 ^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2005-07-21 18:03 UTC | newest] Thread overview: 2+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 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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