Miklos, Following are fixes to some stacked f_op regressions, also availabel on my ovl-fixes branch [1]. Patches 2-3 fix fiemap() and swapon() regressions detected by xfstests. Per your suggestion, f_mapping now points to the overlay inode mapping and as a result, swapfile support is disabled on an overlayfs file. Also disabled is FIBMAP on an overlayfs file - not a big loss. Patch 1 adds the vfs helper file_real() to access overlayfs real file and patches 4-6 use this helper to untangle from the f_mapping change. Please note that patch 4 fixes a problem that was verified with an LTP test [2], but patches 5-6 fix theoretical problems that I have not yet demonstrated with a test. Thanks, Amir. [1] https://github.com/amir73il/linux/commits/ovl-fixes [2] https://github.com/amir73il/ltp/commits/overlayfs-devel Amir Goldstein (6): vfs: add helper to get "real" overlayfs file ovl: respect FIEMAP_FLAG_SYNC flag ovl: fix GPF in swapfile_activate of file from overlayfs over xfs vfs: fix readahead syscall on an overlayfs file vfs: fix fadvise64 syscall on an overlayfs file vfs: fix sync_file_range syscall on an overlayfs file fs/overlayfs/file.c | 4 +--- fs/overlayfs/inode.c | 10 ++++++++++ fs/sync.c | 14 ++++++++++---- include/linux/fs.h | 27 +++++++++++++++++++++++++++ mm/fadvise.c | 34 ++++++++++++++++++++-------------- mm/readahead.c | 9 +++++++-- 6 files changed, 75 insertions(+), 23 deletions(-) -- 2.7.4
