diff options
Diffstat (limited to 'fs/nfs/pnfs.c')
| -rw-r--r-- | fs/nfs/pnfs.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 2a08ca0dddc..ac711257479 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -982,6 +982,14 @@ pnfs_set_layoutcommit(struct nfs_write_data *wdata) } EXPORT_SYMBOL_GPL(pnfs_set_layoutcommit); +/* + * For the LAYOUT4_NFSV4_1_FILES layout type, NFS_DATA_SYNC WRITEs and + * NFS_UNSTABLE WRITEs with a COMMIT to data servers must store enough + * data to disk to allow the server to recover the data if it crashes. + * LAYOUTCOMMIT is only needed when the NFL4_UFLG_COMMIT_THRU_MDS flag + * is off, and a COMMIT is sent to a data server, or + * if WRITEs to a data server return NFS_DATA_SYNC. + */ int pnfs_layoutcommit_inode(struct inode *inode, int sync) { @@ -994,10 +1002,18 @@ pnfs_layoutcommit_inode(struct inode *inode, int sync) dprintk("--> %s inode %lu\n", __func__, inode->i_ino); + if (!test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) + return 0; + /* Note kzalloc ensures data->res.seq_res.sr_slot == NULL */ data = kzalloc(sizeof(*data), GFP_NOFS); - spin_lock(&inode->i_lock); + if (!data) { + mark_inode_dirty_sync(inode); + status = -ENOMEM; + goto out; + } + spin_lock(&inode->i_lock); if (!test_and_clear_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) { spin_unlock(&inode->i_lock); kfree(data); @@ -1014,16 +1030,8 @@ pnfs_layoutcommit_inode(struct inode *inode, int sync) lseg->pls_end_pos = 0; lseg->pls_lc_cred = NULL; - if (!data) { - put_lseg(lseg); - spin_unlock(&inode->i_lock); - put_rpccred(cred); - status = -ENOMEM; - goto out; - } else { - memcpy(&data->args.stateid.data, nfsi->layout->plh_stateid.data, - sizeof(nfsi->layout->plh_stateid.data)); - } + memcpy(&data->args.stateid.data, nfsi->layout->plh_stateid.data, + sizeof(nfsi->layout->plh_stateid.data)); spin_unlock(&inode->i_lock); data->args.inode = inode; |