Miklos, Take #2 for overlayfs freeze. Patch #2 I am quite confident is a bug fix and I have written an xfs specific test for it. Patch #1 is a POC of what I think overlay freezing should be like, although we may want to optimize it with some file flag? Patch #3 just enables overlayfs freezing with NOP freeze_fs() unfreeze_fs() operations, so I could test it. It behaves as expected - overlay and underlying fs can be frozen independently and writes continue when both fs are thawed. I believe that mmap freeze protection is not covered, although I am not sure exactly how it works? Am I missing anything else? Amir Goldstein (3): vfs: freeze protect overlay inode on file_start_write() ovl: properly implement sync_filesystem() ovl: support freeze/thaw super fs/overlayfs/super.c | 32 ++++++++++++++++++++++++++++++++ include/linux/fs.h | 17 ++++++++++++++++- 2 files changed, 48 insertions(+), 1 deletion(-) -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
