[Jfs-discussion] TRIM support for JFS - alpha state

[Tino R. <lis...@mc...>]

Hello JFS List,

I have created a first patch with TRIM support for the jfs filesystem.
Last week I bought a Crucial M4 512GB and tested the speed for various
filesystems on it. My conclusion was, that I should use JFS, like
always done before ;)

I can post some fs_mark benchmarks later... but first look at this
initial discard stuff... IWRITE_LOCK / IWRITE_UNLOCK and so on are not
correct by now - I think :(

Is there some help from the real kernel hackers on this list available ?


TRIM is supported on both interfaces:
1) mount -o discard -> should work, but I don't know really
2) fstrim /mntpoint -> this was a bit harder, but may also do, what
   it should do...


PS: The current patch does not really issue the TRIM, but it shows
nicely in kernel logs, what it would do... so anyone with an SSD could
help here ;)


Have a Nice Weekand.

-- 
regards, TR