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| author | Andy Adamson <andros@netapp.com> | 2011-03-23 14:27:54 +0100 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-03-23 20:29:04 +0100 |
| commit | 863a3c6c686d5773f7192a4818769e15db12ce08 (patch) | |
| tree | 3ff8bf04c583aa0c16ae30b0821bc9148d49a47a /fs/nfs/nfs4filelayout.c | |
| parent | NFSv4.1: filelayout driver specific code for COMMIT (diff) | |
| download | linux-863a3c6c686d5773f7192a4818769e15db12ce08.tar.xz linux-863a3c6c686d5773f7192a4818769e15db12ce08.zip | |
NFSv4.1: layoutcommit
The filelayout driver sends LAYOUTCOMMIT only when COMMIT goes to
the data server (as opposed to the MDS) and the data server WRITE
is not NFS_FILE_SYNC.
Only whole file layout support means that there is only one IOMODE_RW layout
segment.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com>
Signed-off-by: Fred Isaman <iisaman@citi.umich.edu>
Signed-off-by: Mingyang Guo <guomingyang@nrchpc.ac.cn>
Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn>
Signed-off-by: Zhang Jingwang <zhangjingwang@nrchpc.ac.cn>
Tested-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4filelayout.c')
| -rw-r--r-- | fs/nfs/nfs4filelayout.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 97e75a22af72..fc1a0e9c1270 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -154,6 +154,23 @@ static int filelayout_read_done_cb(struct rpc_task *task, } /* + * We reference the rpc_cred of the first WRITE that triggers the need for + * a LAYOUTCOMMIT, and use it to send the layoutcommit compound. + * rfc5661 is not clear about which credential should be used. + */ +static void +filelayout_set_layoutcommit(struct nfs_write_data *wdata) +{ + if (FILELAYOUT_LSEG(wdata->lseg)->commit_through_mds || + wdata->res.verf->committed == NFS_FILE_SYNC) + return; + + pnfs_set_layoutcommit(wdata); + dprintk("%s ionde %lu pls_end_pos %lu\n", __func__, wdata->inode->i_ino, + (unsigned long) wdata->lseg->pls_end_pos); +} + +/* * Call ops for the async read/write cases * In the case of dense layouts, the offset needs to be reset to its * original value. @@ -210,6 +227,7 @@ static int filelayout_write_done_cb(struct rpc_task *task, return -EAGAIN; } + filelayout_set_layoutcommit(data); return 0; } |