diff options
| author | Alexander Aring <aahringo@redhat.com> | 2023-09-12 23:53:18 +0200 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2023-10-16 18:44:01 +0200 |
| commit | 2dd10de8e6bcbacf85ad758b904543c294820c63 (patch) | |
| tree | a02b93f07e60b7ad38891945621979fd91163713 /fs/lockd/svclock.c | |
| parent | nfsd: Don't reset the write verifier on a commit EAGAIN (diff) | |
| download | linux-2dd10de8e6bcbacf85ad758b904543c294820c63.tar.xz linux-2dd10de8e6bcbacf85ad758b904543c294820c63.zip | |
lockd: introduce safe async lock op
This patch reverts mostly commit 40595cdc93ed ("nfs: block notification
on fs with its own ->lock") and introduces an EXPORT_OP_ASYNC_LOCK
export flag to signal that the "own ->lock" implementation supports
async lock requests. The only main user is DLM that is used by GFS2 and
OCFS2 filesystem. Those implement their own lock() implementation and
return FILE_LOCK_DEFERRED as return value. Since commit 40595cdc93ed
("nfs: block notification on fs with its own ->lock") the DLM
implementation were never updated. This patch should prepare for DLM
to set the EXPORT_OP_ASYNC_LOCK export flag and update the DLM
plock implementation regarding to it.
Acked-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/lockd/svclock.c')
| -rw-r--r-- | fs/lockd/svclock.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c index 43aeba9de55c..d500e32ebb18 100644 --- a/fs/lockd/svclock.c +++ b/fs/lockd/svclock.c @@ -481,9 +481,7 @@ nlmsvc_lock(struct svc_rqst *rqstp, struct nlm_file *file, struct nlm_host *host, struct nlm_lock *lock, int wait, struct nlm_cookie *cookie, int reclaim) { -#if IS_ENABLED(CONFIG_SUNRPC_DEBUG) struct inode *inode = nlmsvc_file_inode(file); -#endif struct nlm_block *block = NULL; int error; int mode; @@ -497,7 +495,7 @@ nlmsvc_lock(struct svc_rqst *rqstp, struct nlm_file *file, (long long)lock->fl.fl_end, wait); - if (nlmsvc_file_file(file)->f_op->lock) { + if (!exportfs_lock_op_is_async(inode->i_sb->s_export_op)) { async_block = wait; wait = 0; } |