2014-02-18 23:30 GMT+09:00, Theodore Ts'o <tytso@xxxxxxx>: > Namjae, Hi Ted. > > Did you respond to Matthew Wilcox's comments/question from Feb. 2nd? Sorry, I didn't catch about this. I just replied from Matthew's mail. Thanks for your remind. > >> > 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
