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Hi! > > No. Writing to file would trash the filesystem. But you can bmap the file, > > then write to the block device. > > And for reading, I could used a device mapper enforced read only mount or > filesystem code from grub. Or use a filesystem that honours read-only option, like ext2... > Hmm, how about a possibility to ask the kernel for a list of free pages on a > swap device? This way, userspace could write the image to swap as the kernel > currently does, avoiding possible trouble with filesystems. Yes, that is the plan. > > Better avoid memory allocation. > > And all memory allocated and mapped in advance would be part of the image. But > this is totally acceptable for a "suspend helper". Yes. Pavel -- Thanks, Sharp! - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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