Thanks to Tyler and Christian for the patch/reviews/tests! The following changes since commit b13baccc3850ca8b8cccbf8ed9912dbaa0fdf7f3: Linux 5.19-rc2 (2022-06-12 16:11:37 -0700) are available in the Git repository at: https://github.com/martinetd/linux tags/9p-for-5.19-rc4 for you to fetch changes up to b0017602fdf6bd3f344dd49eaee8b6ffeed6dbac: 9p: fix EBADF errors in cached mode (2022-06-17 06:03:30 +0900) ---------------------------------------------------------------- 9p-for-5.19-rc4: fid refcount and fscache fixes This contains a couple of fixes: - fid refcounting was incorrect in some corner cases and would leak resources, only freed at umount time. The first three commits fix three such cases - cache=loose or fscache was broken when trying to write a partial page to a file with no read permission since the rework a few releases ago. The fix taken here is just to restore old behavior of using the special 'writeback_fid' for such reads, which is open as root/RDWR and such not get complains that we try to read on a WRONLY fid. Long-term it'd be nice to get rid of this and not issue the read at all (skip cache?) in such cases, but that direction hasn't progressed ---------------------------------------------------------------- Dominique Martinet (3): 9p: fix fid refcount leak in v9fs_vfs_atomic_open_dotl 9p: fix fid refcount leak in v9fs_vfs_get_link 9p: fix EBADF errors in cached mode Tyler Hicks (1): 9p: Fix refcounting during full path walks for fid lookups fs/9p/fid.c | 22 +++++++++------------- fs/9p/vfs_addr.c | 13 +++++++++++++ fs/9p/vfs_inode.c | 8 ++++---- fs/9p/vfs_inode_dotl.c | 3 +++ 4 files changed, 29 insertions(+), 17 deletions(-) -- Dominique
