Ben Hutchings wrote: > In general, it is not possible to tell whether a card present in an MMC > slot after resume is the same that was there before suspend.
That's true for virtually all storage devices, not just MMC. > So there are two possible behaviours, each of which will cause data > loss in some cases: > > CONFIG_MMC_UNSAFE_RESUME=n (default): Cards are assumed to be removed > during suspend. Any filesystem on them must be unmounted before > suspend; otherwise, buffered writes will be lost. > > CONFIG_MMC_UNSAFE_RESUME=y: Cards are assumed to remain present during > suspend. They must not be swapped during suspend; otherwise, buffered > writes will be flushed to the wrong card. > > Currently the choice is made at compile time and this allows that to be > overridden at module load time. Can't the kernel flush the write buffer at suspend time, so that you can remove this choice for good? -- Stefan Richter -=====-==--= =-== =---= http://arcgraph.de/sr/ -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
