diff options
| author |   Trond Myklebust <trond.myklebust@primarydata.com> | 2017-06-20 19:35:37 -0400 |
|---|---|---|
| committer |   Anna Schumaker <Anna.Schumaker@Netapp.com> | 2017-07-13 15:58:05 -0400 |
| commit | 919e3bd9a87593520a2c5dfda27bd3e6599852ed (patch) | |
| tree | 94bbb463d528d3ecf32967d067a2781b776709bc /include | |
| parent | NFS: Remove unused fields in the page I/O structures (diff) | |
| download | linux-dev-919e3bd9a87593520a2c5dfda27bd3e6599852ed.tar.xz linux-dev-919e3bd9a87593520a2c5dfda27bd3e6599852ed.zip | |
NFS: Ensure we commit after writeback is complete
If the page cache is being flushed, then we want to ensure that we
do start a commit once the pages are done being flushed.
If we just wait until all I/O is done to that file, we can end up
livelocking until the balance_dirty_pages() mechanism puts its
foot down and forces I/O to stop.
So instead we do more or less the same thing that O_DIRECT does,
and set up a counter to tell us when the flush is done,
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/nfs_page.h | 1 | ||||
| -rw-r--r-- | include/linux/nfs_xdr.h | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 6138cf91346b..abbee2d15dce 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -93,6 +93,7 @@ struct nfs_pageio_descriptor { const struct rpc_call_ops *pg_rpc_callops; const struct nfs_pgio_completion_ops *pg_completion_ops; struct pnfs_layout_segment *pg_lseg; + struct nfs_io_completion *pg_io_completion; struct nfs_direct_req *pg_dreq; unsigned int pg_bsize; /* default bsize for mirrors */ diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 7f1e04941763..89093341f076 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1422,6 +1422,7 @@ enum { NFS_IOHDR_STAT, }; +struct nfs_io_completion; struct nfs_pgio_header { struct inode *inode; struct rpc_cred *cred; @@ -1435,6 +1436,7 @@ struct nfs_pgio_header { void (*release) (struct nfs_pgio_header *hdr); const struct nfs_pgio_completion_ops *completion_ops; const struct nfs_rw_ops *rw_ops; + struct nfs_io_completion *io_completion; struct nfs_direct_req *dreq; spinlock_t lock; /* fields protected by lock */ |