On Thu, Nov 14, 2024 at 11:13:29AM -0800, Joanne Koong wrote: > There are situations where fuse servers can become unresponsive or > stuck, for example if the server is in a deadlock. Currently, there's > no good way to detect if a server is stuck and needs to be killed > manually. > > This patchset adds a timeout option where if the server does not reply to a > request by the time the timeout elapses, the connection will be aborted. > This patchset also adds two dynamically configurable fuse sysctls > "default_request_timeout" and "max_request_timeout" for controlling/enforcing > timeout behavior system-wide. > > Existing systems running fuse servers will not be affected unless they > explicitly opt into the timeout. > > v8: > https://lore.kernel.org/linux-fsdevel/20241011191320.91592-1-joannelkoong@xxxxxxxxx/ > Changes from v8 -> v9: > * Fix comment for u16 fs_parse_result, ULONG_MAX instead of U32_MAX, fix > spacing (Bernd) > > v7: > https://lore.kernel.org/linux-fsdevel/20241007184258.2837492-1-joannelkoong@xxxxxxxxx/ > Changes from v7 -> v8: > * Use existing lists for checking expirations (Miklos) > > v6: > https://lore.kernel.org/linux-fsdevel/20240830162649.3849586-1-joannelkoong@xxxxxxxxx/ > Changes from v6 -> v7: > - Make timer per-connection instead of per-request (Miklos) > - Make default granularity of time minutes instead of seconds > - Removed the reviewed-bys since the interface of this has changed (now > minutes, instead of seconds) > > v5: > https://lore.kernel.org/linux-fsdevel/20240826203234.4079338-1-joannelkoong@xxxxxxxxx/ > Changes from v5 -> v6: > - Gate sysctl.o behind CONFIG_SYSCTL in makefile (kernel test robot) > - Reword/clarify last sentence in cover letter (Miklos) > > v4: > https://lore.kernel.org/linux-fsdevel/20240813232241.2369855-1-joannelkoong@xxxxxxxxx/ > Changes from v4 -> v5: > - Change timeout behavior from aborting request to aborting connection > (Miklos) > - Clarify wording for sysctl documentation (Jingbo) > > 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 (3): > fs_parser: add fsparam_u16 helper > fuse: add optional kernel-enforced timeout for requests > fuse: add default_request_timeout and max_request_timeout sysctls > These look great Joanne, you can add Reviewed-by: Josef Bacik <josef@xxxxxxxxxxxxxx> to the series. Thanks, Josef
