[Cluster-devel] [PATCH v3 0/7] gfs2: Fix mmap + page fault deadlocks
Andreas Gruenbacher
agruenba at redhat.com
Fri Jul 23 20:58:33 UTC 2021
Hi Linus et al.,
here's an update of my gfs2 mmap + page fault fixes (against -rc2).
>From my point of view,
* these two are ready and need to be looked at by Al:
iov_iter: Introduce fault_in_iov_iter helper
iov_iter: Introduce noio flag to disable page faults
* these two need to be reviewed by Christoph at least:
iomap: Fix iomap_dio_rw return value for user copies
iomap: Support restarting direct I/O requests after user copy failures
Thanks a lot,
Andreas
Andreas Gruenbacher (7):
iov_iter: Introduce fault_in_iov_iter helper
gfs2: Add wrapper for iomap_file_buffered_write
gfs2: Fix mmap + page fault deadlocks for buffered I/O
iomap: Fix iomap_dio_rw return value for user copies
iomap: Support restarting direct I/O requests after user copy failures
iov_iter: Introduce noio flag to disable page faults
gfs2: Fix mmap + page fault deadlocks for direct I/O
fs/gfs2/file.c | 77 ++++++++++++++++++++++++++++++++++++++++----
fs/iomap/direct-io.c | 13 ++++++--
include/linux/mm.h | 3 ++
include/linux/uio.h | 2 ++
lib/iov_iter.c | 62 ++++++++++++++++++++++++++++++++---
mm/gup.c | 68 ++++++++++++++++++++++++++++++++++++++
6 files changed, 211 insertions(+), 14 deletions(-)
--
2.26.3
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