Hi Linus et al., here's an update to the gfs2 mmap + page faults fix that implements Linus's suggestion of disabling page faults while we're holding the inode glock. This passes fstests except for test generic/095, which fails due to an independent bug in the iov_iter code. I'm currently trying to get initial feedback from Al and Christoph on that. Any feedback would be welcome. Thanks a lot, Andreas Andreas Gruenbacher (6): iov_iter: Introduce fault_in_iov_iter helper iomap: Fix iomap_dio_rw return value for page faults gfs2: Add wrapper for iomap_file_buffered_write gfs2: Fix mmap + page fault deadlocks for buffered I/O iov_iter: Introduce ITER_FLAG_FAST_ONLY flag gfs2: Fix mmap + page fault deadlocks for direct I/O fs/gfs2/file.c | 79 ++++++++++++++++++++++++++++++++++++++++---- fs/iomap/direct-io.c | 2 ++ include/linux/mm.h | 3 ++ include/linux/uio.h | 16 +++++++-- lib/iov_iter.c | 62 +++++++++++++++++++++++++++++++--- mm/gup.c | 68 ++++++++++++++++++++++++++++++++++++++ 6 files changed, 215 insertions(+), 15 deletions(-) -- 2.26.3
