On Wed, Aug 14, 2024 at 7:23 AM Joanne Koong <joannelkoong@xxxxxxxxx> wrote: > > There are situations where fuse servers can become unresponsive or take > too long to reply to a request. Currently there is no upper bound on > how long a request may take, which may be frustrating to users who get > stuck waiting for a request to complete. > > This patchset adds a timeout option for requests and two dynamically > configurable fuse sysctls "default_request_timeout" and "max_request_timeout" > for controlling/enforcing timeout behavior system-wide. > > Existing fuse servers will not be affected unless they explicitly opt into the > timeout. > > v3: https://lore.kernel.org/linux-fsdevel/20240808190110.3188039-1-joannelkoong@xxxxxxxxx/ > Changes from v3 -> v4: > - Fix wording on some comments to make it more clear > - Use simpler logic for timer (eg remove extra if checks, use mod timer API) (Josef) > - Sanity-check should be on FR_FINISHING not FR_FINISHED (Jingbo) > - Fix comment for "processing queue", add req->fpq = NULL safeguard (Bernd) > > v2: https://lore.kernel.org/linux-fsdevel/20240730002348.3431931-1-joannelkoong@xxxxxxxxx/ > Changes from v2 -> v3: > - Disarm / rearm timer in dev_do_read to handle race conditions (Bernrd) > - Disarm timer in error handling for fatal interrupt (Yafang) > - Clean up do_fuse_request_end (Jingbo) > - Add timer for notify retrieve requests > - Fix kernel test robot errors for #define no-op functions > > v1: https://lore.kernel.org/linux-fsdevel/20240717213458.1613347-1-joannelkoong@xxxxxxxxx/ > Changes from v1 -> v2: > - Add timeout for background requests > - Handle resend race condition > - Add sysctls > > Joanne Koong (2): > fuse: add optional kernel-enforced timeout for requests > fuse: add default_request_timeout and max_request_timeout sysctls > > Documentation/admin-guide/sysctl/fs.rst | 17 +++ > fs/fuse/Makefile | 2 +- > fs/fuse/dev.c | 192 +++++++++++++++++++++++- > fs/fuse/fuse_i.h | 30 ++++ > fs/fuse/inode.c | 24 +++ > fs/fuse/sysctl.c | 42 ++++++ > 6 files changed, 298 insertions(+), 9 deletions(-) > create mode 100644 fs/fuse/sysctl.c > > -- > 2.43.5 > For this series, Tested-by: Yafang Shao <laoar.shao@xxxxxxxxx> -- Regards Yafang
