Re: [CHECKER] Do ext2, jfs and reiserfs respect mount -o sync/dirsyncoption?

[Jan Engelhardt]

>All warnings boil down to a single cause:  when these file systems are
>mounted -o sync or dirsync, dirty blocks are still written out
>asynchronously.  It appears to me that these mount options don't have any
>effect on these file systems.  Is this the intended behavior?

At least my HDD LED flashes regularly when I add -o sync...
(Using `mount / -o remount,sync`)

It may happen that FISC reads the disk before the write command even finished. 
With all the HD head movement optimization in the kernel (block layer, 
boiling down to TCQ/NCQ), this sounds possible.


Jan Engelhardt
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