Namjae, Did you respond to Matthew Wilcox's comments/question from Feb. 2nd? > > What if the file is mmaped at the time somebody issues this command? > > Seems to me we should drop pagecache pages that overlap with the > > removed blocks. If the removed range is not a multiple of PAGE_SIZE, > > then we should also drop any pagecache pages after the removed range. > > Oops, forgot to add "and if it is a multiple of page size, then we need > to update the offsets of any pages after the removed page". Dave responded that XFS does the right thing when doing a punch hole operation, but it wasn't obvious to me whether FL_COLLAPSE_RANGE does the right thing with ext4. Thanks, - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
