How to download patch file from kernel

To revert a previously applied patch, use the -R argument to patch. So, if you applied a patch like this:. This as usual with Linux and other UNIX like operating systems can be done in several different ways. In all the examples below I feed the file in uncompressed form to patch via stdin using the following syntax:. Which will leave you with a plain text patch-x. Finally --verbose tells patch to print more information about the work being done. Checking that the file looks like a valid patch file and checking the code around the bits being modified matches the context provided in the patch are just two of the basic sanity checks patch does.

It can either refuse to apply the changes and abort or it can try to find a way to make the patch apply with a few minor changes. This can happen, for example, if the patch makes a change in the middle of the file but for some reasons a few lines have been added or removed near the beginning of the file.

In that case everything looks good it has just moved up or down a bit, and patch will usually adjust the line numbers and apply the patch.

If patch stops and presents a File to patch: prompt, then patch could not find a file to be patched. Most likely you forgot to specify -p1 or you are in the wrong directory. If you get Hunk 2 succeeded at with fuzz 2 offset 7 lines. The resulting file may or may not be OK, depending on the reason the file was different than expected.

This often happens if you try to apply a patch that was generated against a different kernel version than the one you are trying to patch. This will generate a. If you get Reversed or previously applied patch detected! Assume -R? If you actually did apply this patch previously and you just re-applied it in error, then just say [n]o and abort this patch.

If you applied this patch previously and actually intended to revert it, but forgot to specify -R, then you can say [ y ]es here to make patch revert it for you. This can also happen if the creator of the patch reversed the source and destination directories when creating the patch, and in that case reverting the patch will in fact apply it.

Either your download is broken, you tried to feed patch a compressed patch file without uncompressing it first, or the patch file that you are using has been mangled by a mail client or mail transfer agent along the way somewhere, e. Often these warnings can easily be fixed by joining concatenating the two lines that had been split.

As I already mentioned above, these errors should never happen if you apply a patch from kernel. So if you get these errors with kernel. This will let you move from something like 5. For example, you cannot use individual 6. Therefore, if you want to import a 6. Refer to , "Installing a 6. Kernel 4.

To use the downward-compatible 4. Refer to , "Installing 4. Patch formats The patches of the individual programs are ". In the Software Center, the patch level and further information are displayed for every patch link "Info" in analogy with the former "Info file" on sapserv. Always use the patch with the highest version number.

SAR Old :. Example: DW. Both archives are always needed to update a kernel. SAR kernel patches. SAR CAR archives which, because of existing dependencies, must always be used in consistent versions. The link contains information about the SAP and database version and the kernel patch level. Note: As of 4. Therefore, the "rsyn.

Active Oldest Votes. Improve this answer. I didn't see the link from LKML since I was looking at the header email from the patch set with no diff. This is pretty darn unpleasant: I was hoping for something that would let me select a set of messages and save them as a raw mbox, or even let me download a day's worth as a raw mbox I can edit it locally.

For any patch set of significant size this will be very painful. But, it will work! I also found this: patchwork. For some reason patchwork. References Releasing to Linux kernel using patches and emails Git - ti. Yes, of course. As I mentioned in my question, I'm very familiar with patching and building the kernel.

The post says "save the mail", but save it from where? You can't just save it from the web-based mail archives at least not the ones I've found because you get a big bunch of HTML-encoded stuff that can't be used for patching. MadScientist - yes I agree that it's sub-optimal. The above saves you a step of saving a file out if you're using something like mutt , the mbox files can be setup if you're subscribed to a mailing list where the patches are being emailed to.

Still seems like there has to be a better way, I'll keep digging. It's just able to download patch sets that are already bundled and available as patch files on kernel. MadScientist - I believe you're correct. I was thinking you could use it to download patches that have been tagged outside of the emails, using the emails only as a reference to the tags that you're interested in.

You should've held off accepting the answer. Seems like there has to be a better method than manually copying them down? Knowing programmer types, they're lazy and would never put up with that workflow for too long Show 2 more comments. There are two ways I know.