Hi, By discussing in the MELS (Mobile & Embedded Linux Storage Forum) we are deciding whether it is ok to remove the bonding between REQ_META and "Reliable Write" in eMMC devices. We already got a first positive ack from FS developers here http://comments.gmane.org/gmane.linux.file-systems/97219
>This performance impact comes from the existing MMC SW driver solution where >each IO request marked with >REQ_META is handled as a "Reliable Write" operation. >Pretty much as a as a FUA write access, a "Reliable write" means that the data >will be written to the >non-volatile memory. >Due to the fact that every REQ_META is immediately bypassing the internal >cache of eMMC device, write >performance is affected significantly. Wanted also to check for side effects on F2FS. Please advise how critical is to send REQ_META as "Reliable Write"? Can REQ_META be sent as a regular Write operation? Thanks, Luca Porzio Micron ------------------------------------------------------------------------------ _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
