diff options
| author |   Fred Isaman <fred.isaman@gmail.com> | 2016-10-05 09:37:12 -0400 |
|---|---|---|
| committer |   Trond Myklebust <trond.myklebust@hammerspace.com> | 2018-05-31 15:03:11 -0400 |
| commit | c49b5209f99abe082d3d4cd94f0ad924baea34ed (patch) | |
| tree | 315980082bc9f161fd2363668f9f42c067aebee8 /fs/nfs/callback_proc.c | |
| parent | pnfs: Stop attempting LAYOUTGET on OPEN on failure (diff) | |
| download | linux-dev-c49b5209f99abe082d3d4cd94f0ad924baea34ed.tar.xz linux-dev-c49b5209f99abe082d3d4cd94f0ad924baea34ed.zip | |
pnfs: Add barrier to prevent lgopen using LAYOUTGET during recall
Since the LAYOUTGET on OPEN can be sent without prior inode information,
existing methods to prevent LAYOUTGET from being sent while processing
CB_LAYOUTRECALL don't work. Track if a recall occurred while LAYOUTGET
was being sent, and if so ignore the results.
Signed-off-by: Fred Isaman <fred.isaman@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs/callback_proc.c')
| -rw-r--r-- | fs/nfs/callback_proc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index a50d7813e3ea..d561161b7c3e 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -322,6 +322,8 @@ static u32 initiate_bulk_draining(struct nfs_client *clp, static u32 do_callback_layoutrecall(struct nfs_client *clp, struct cb_layoutrecallargs *args) { + write_seqcount_begin(&clp->cl_callback_count); + write_seqcount_end(&clp->cl_callback_count); if (args->cbl_recall_type == RETURN_FILE) return initiate_file_draining(clp, args); return initiate_bulk_draining(clp, args); |