Miklos, Following are fixes to some stacked f_op regressions, also available on my ovl-fixes branch [1]. Patches 1-2 fix fiemap() and swapon() regressions detected by xfstests (no change from v2). Patches 3-6 implement the fadvise() file operation in overlayfs to fix fadvise64(2) and readahead(2) syscalls, per your suggestion. Correctness and error cases of readahead(2) were verified with the LTP readahead tests including a new overlayfs readahead test [2]. Error cases of fadvise64(2) were verified with the LTP fadvise tests, but correctness is not yet covered by those tests. Thanks, Amir. Changes from v2: - avoid file_real() vfs hack - implement ovl_fadvise() - update vfs.txt [1] https://github.com/amir73il/linux/commits/ovl-fixes [2] https://github.com/amir73il/ltp/commits/overlayfs-devel Amir Goldstein (6): ovl: respect FIEMAP_FLAG_SYNC flag ovl: fix GPF in swapfile_activate of file from overlayfs over xfs Documentation/filesystems: update documentation of file_operations to kernel 4.18 vfs: add the fadvise() file operation vfs: implement readahead(2) using POSIX_FADV_WILLNEED ovl: add ovl_fadvise() Documentation/filesystems/vfs.txt | 25 +++++++++++-- fs/overlayfs/file.c | 21 +++++++++-- fs/overlayfs/inode.c | 10 +++++ include/linux/fs.h | 5 +++ mm/fadvise.c | 78 ++++++++++++++++++++++----------------- mm/readahead.c | 28 ++++++-------- 6 files changed, 110 insertions(+), 57 deletions(-) -- 2.7.4
