On Thu, Nov 24, 2016 at 4:14 PM, Miklos Szeredi <miklos@xxxxxxxxxx> wrote: > On Thu, Nov 24, 2016 at 11:55 AM, Miklos Szeredi <mszeredi@xxxxxxxxxx> wrote: >> A file is opened for read-only, opened read-write (resulting in a copy up) >> and modified. The data read back from the the read-only fd will be stale >> in this case (the read-only file descriptor still refers to the lower, >> unmodified file). >> >> This patchset fixes issues related to this corner case. >> >> The VFS impact is minimal and performance in the non-corner cases shouldn't >> suffer. > > Git tree is here: > > git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git #overlayfs-rorw > passed my tests. I now run all my tests (including unionmount-testsuite) on a setup of overlayfs over xfs with reflink: - xfstests - from my github overlayfs-devel branch -g quick and overlay/* including new test 016 to check ro/rw fd data inconsistencies - pjdfstest - from my github overlayfs-devel branch including acl/xattr tests - unionmount-testsuite - from my github overlayfs-devel branch without recycling (--ov), with mount recycle -(-ov=0) and with mount recycle and layers (--ov=10) Tested-by: Amir Goldstein <amir73il@xxxxxxxxx> -- 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
