xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

pnfs: Add barrier to prevent lgopen using LAYOUTGET during recall

Browse Source 
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>
This commit is contained in:
Fred Isaman
2016-10-05 09:37:12 -04:00
committed by Trond Myklebust
parent 6e01260cee
commit c49b5209f9
4 changed files with 11 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
fs/nfs/callback_proc.c
View File

@@ -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);