2008/1/16, Rogier Wolff <[EMAIL PROTECTED]>: > > Hi, > > I wrote a small app yesterday that updates a file by mmapping the > file (RW), changing the thing around, and then exiting. > > This did not trigger a change in the mtime of the file. Thus rsync > didn't pick up that the file had changed. > > I understand that tracking every change to a RW mmapped file is > costly, and thus unfeasable, but shouldn't then the close cause a > mtime update? > > The server where this happened is running 2.6.21, so my apologies if > this has already been corrected.
Unfortunately, this issue has not been fully fixed yet. My last attempt (http://lkml.org/lkml/2008/1/15/202) to solve this problem has a couple of drawbacks: 1) calling a possibly sleeping function from atomic context - I've already corrected this; 2) there's a very special case with retouching the memory-mapped data after a call to msync() with MS_ASYNC. I'm still working on the latter case, but I guess that I have found a solution. If you badly need a quick fix, I can send my working unreleased patch to you. I reckon that your particular problem will be fixed by this patch. Let me know if you want that. However, if your application calls msync() with the MS_ASYNC flag, it's better to wait a little bit more - I'll release the next version of my solution shortly. > > Roger. > > -- > ** [EMAIL PROTECTED] ** http://www.BitWizard.nl/ ** +31-15-2600998 ** > ** Delftechpark 26 2628 XH Delft, The Netherlands. KVK: 27239233 ** > *-- BitWizard writes Linux device drivers for any device you may have! --* > Q: It doesn't work. A: Look buddy, doesn't work is an ambiguous statement. > Does it sit on the couch all day? Is it unemployed? Please be specific! > Define 'it' and what it isn't doing. --------- Adapted from lxrbot FAQ > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
