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authorDavid Howells <dhowells@redhat.com>2025-07-01 17:38:39 +0100
committerChristian Brauner <brauner@kernel.org>2025-07-01 22:37:13 +0200
commit09623e3a14c1c5465124350cd227457c2b0fb017 (patch)
treec401f85afa90bcc73f672c6fbf3a1c8b00b3bcfb /scripts/lib/kdoc/kdoc_parser.py
parent1a6d45fec33a03ca681eee125ea96987742a893f (diff)
netfs: Fix looping in wait functions
netfs_wait_for_request() and netfs_wait_for_pause() can loop forever if netfs_collect_in_app() returns 2, indicating that it wants to repeat because the ALL_QUEUED flag isn't yet set and there are no subreqs left that haven't been collected. The problem is that, unless collection is offloaded (OFFLOAD_COLLECTION), we have to return to the application thread to continue and eventually set ALL_QUEUED after pausing to deal with a retry - but we never get there. Fix this by inserting checks for the IN_PROGRESS and PAUSE flags as appropriate before cycling round - and add cond_resched() for good measure. Fixes: 2b1424cd131c ("netfs: Fix wait/wake to be consistent about the waitqueue used") Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/20250701163852.2171681-5-dhowells@redhat.com Tested-by: Steve French <sfrench@samba.org> Reviewed-by: Paulo Alcantara <pc@manguebit.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'scripts/lib/kdoc/kdoc_parser.py')
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