* will jffs2 write to device when doing "read-only" operation like "ls"? @ 2002-08-08 4:37 ?? 2002-08-08 4:46 ` Allen Curtis 2002-08-08 7:17 ` David Woodhouse 0 siblings, 2 replies; 3+ messages in thread From: ?? @ 2002-08-08 4:37 UTC (permalink / raw) To: linux-mtd dear all, will jffs2 write to device when doing "read-only" operation like "ls"? for example, if you do a "ls -lR" then a fs like ext2/minix will write stuff to block device (because of put_inode operation),thus might reduce life of nand flash....... if the answer is yes, is it possible to impore/modify it? thanks in advanced!:) ^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: will jffs2 write to device when doing "read-only" operation like "ls"? 2002-08-08 4:37 will jffs2 write to device when doing "read-only" operation like "ls"? ?? @ 2002-08-08 4:46 ` Allen Curtis 2002-08-08 7:17 ` David Woodhouse 1 sibling, 0 replies; 3+ messages in thread From: Allen Curtis @ 2002-08-08 4:46 UTC (permalink / raw) To: ??, linux-mtd > will jffs2 write to device when doing "read-only" operation like "ls"? To my knowledge NO. JFFS and JFFS2 work just fine with read-only devices so I assume that writing for no reason is not necessary. ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: will jffs2 write to device when doing "read-only" operation like "ls"? 2002-08-08 4:37 will jffs2 write to device when doing "read-only" operation like "ls"? ?? 2002-08-08 4:46 ` Allen Curtis @ 2002-08-08 7:17 ` David Woodhouse 1 sibling, 0 replies; 3+ messages in thread From: David Woodhouse @ 2002-08-08 7:17 UTC (permalink / raw) To: ??; +Cc: linux-mtd kevin@gv.com.tw said: > will jffs2 write to device when doing "read-only" operation like "ls"? > for example, if you do a "ls -lR" then a fs like ext2/minix will write > stuff to block device (because of put_inode operation),thus might > reduce life of nand flash....... Normal file systems write because they have to update the 'atime' (access time) field whenever an inode is read. Very few applications actually care about a correct atime, and JFFS2 does not implement atime. -- dwmw2 ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2002-08-08 7:17 UTC | newest] Thread overview: 3+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2002-08-08 4:37 will jffs2 write to device when doing "read-only" operation like "ls"? ?? 2002-08-08 4:46 ` Allen Curtis 2002-08-08 7:17 ` David Woodhouse
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