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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-09-11 20:09:37 +0300 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-09-12 05:19:00 +0300 |
| commit | 70d2f7b1ea19b7e43e36ccc63496f45f9908134d (patch) | |
| tree | e4ae5571a942caa20bbe4a9119d34944839feffb /fs/nfs | |
| parent | 1bd5d6d08ea7ed0794c8a3908383d6d6fc202cdd (diff) | |
| download | linux-70d2f7b1ea19b7e43e36ccc63496f45f9908134d.tar.xz | |
pNFS: Use the standard I/O stateid when calling LAYOUTGET
Instead of having a private method for copying the open/delegation stateid,
use the same call that is used for standard I/O through the MDS.
Note that this means we transmit the stateid with a zero seqid, avoiding
issues with NFS4ERR_OLD_STATEID.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/pnfs.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 7879ed8ceb76..3bcd669a3152 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1664,7 +1664,7 @@ pnfs_update_layout(struct inode *ino, .offset = pos, .length = count, }; - unsigned pg_offset, seq; + unsigned pg_offset; struct nfs_server *server = NFS_SERVER(ino); struct nfs_client *clp = server->nfs_client; struct pnfs_layout_hdr *lo = NULL; @@ -1754,10 +1754,14 @@ lookup_again: } first = true; - do { - seq = read_seqbegin(&ctx->state->seqlock); - nfs4_stateid_copy(&stateid, &ctx->state->stateid); - } while (read_seqretry(&ctx->state->seqlock, seq)); + if (nfs4_select_rw_stateid(ctx->state, + iomode == IOMODE_RW ? FMODE_WRITE : FMODE_READ, + NULL, &stateid, NULL) != 0) { + trace_pnfs_update_layout(ino, pos, count, + iomode, lo, lseg, + PNFS_UPDATE_LAYOUT_INVALID_OPEN); + goto out_unlock; + } } else { nfs4_stateid_copy(&stateid, &lo->plh_stateid); } |