wireguard-linux/fs/nfsd/filecache.c, branch jd/unified-crypt-queue

fs: nfsd: fileache.c: Use built-in RCU list checking

2020-03-16T16:04:31Z

list_for_each_entry_rcu() has built-in RCU and lock checking. Pass cond argument to list_for_each_entry_rcu() to silence false lockdep warning when CONFIG_PROVE_RCU_LIST is enabled by default. Signed-off-by: Madhuparna Bhowmik Signed-off-by: J. Bruce Fields Signed-off-by: Chuck Lever

nfsd: make nfsd_filecache_wq variable static

2020-02-07T18:30:41Z

Fix sparse warning: fs/nfsd/filecache.c:55:25: warning: symbol 'nfsd_filecache_wq' was not declared. Should it be static? Reported-by: Hulk Robot Signed-off-by: Chen Zhou Signed-off-by: J. Bruce Fields

nfsd: convert file cache to use over/underflow safe refcount

2020-02-06T16:22:55Z

Use the 'refcount_t' type instead of 'atomic_t' for improved refcounting safety. Signed-off-by: Trond Myklebust Signed-off-by: J. Bruce Fields

nfsd: Fix stable writes

2020-01-22T21:25:40Z

Strictly speaking, a stable write error needs to reflect the write + the commit of that write (and only that write). To ensure that we don't pick up the write errors from other writebacks, add a rw_semaphore to provide exclusion. Signed-off-by: Trond Myklebust Signed-off-by: J. Bruce Fields

nfsd: Fix a soft lockup race in nfsd_file_mark_find_or_create()

2020-01-22T21:25:40Z

If nfsd_file_mark_find_or_create() keeps winning the race for the nfsd_file_fsnotify_group->mark_mutex against nfsd_file_mark_put() then it can soft lock up, since fsnotify_add_inode_mark() ends up always finding an existing entry. Signed-off-by: Trond Myklebust Signed-off-by: J. Bruce Fields

nfsd: Reduce the number of calls to nfsd_file_gc()

2020-01-22T21:25:40Z

Don't call nfsd_file_gc() on every put of the reference in nfsd_file_put(). Instead, do it only when we're expecting the refcount to go to 1. Signed-off-by: Trond Myklebust Signed-off-by: J. Bruce Fields

nfsd: Schedule the laundrette regularly irrespective of file errors

2020-01-22T21:25:40Z

Emsure we schedule the laundrette even if the struct file is carrying file errors. Signed-off-by: Trond Myklebust Signed-off-by: J. Bruce Fields

nfsd: Remove unused constant NFSD_FILE_LRU_RESCAN

2020-01-22T21:25:40Z

Signed-off-by: Trond Myklebust Signed-off-by: J. Bruce Fields

nfsd: Containerise filecache laundrette

2020-01-22T21:25:40Z

Ensure that if the filecache laundrette gets stuck, it only affects the knfsd instances of one container. The notifier callbacks can be called from various contexts so avoid using synchonous filesystem operations that might deadlock. Signed-off-by: Trond Myklebust Signed-off-by: J. Bruce Fields

nfsd: cleanup nfsd_file_lru_dispose()

2020-01-22T21:25:40Z

Signed-off-by: Trond Myklebust Signed-off-by: J. Bruce Fields