diff options
Diffstat (limited to 'fs/nfs/pnfs.c')
-rw-r--r-- | fs/nfs/pnfs.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 0a5dda4..4d69076 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -34,6 +34,7 @@ #include "pnfs.h" #include "iostat.h" #include "nfs4trace.h" +#include "delegation.h" #define NFSDBG_FACILITY NFSDBG_PNFS #define PNFS_LAYOUTGET_RETRY_TIMEOUT (120*HZ) @@ -954,30 +955,45 @@ pnfs_commit_and_return_layout(struct inode *inode) bool pnfs_roc(struct inode *ino) { + struct nfs_inode *nfsi = NFS_I(ino); + struct nfs_open_context *ctx; + struct nfs4_state *state; struct pnfs_layout_hdr *lo; struct pnfs_layout_segment *lseg, *tmp; LIST_HEAD(tmp_list); bool found = false; spin_lock(&ino->i_lock); - lo = NFS_I(ino)->layout; + lo = nfsi->layout; if (!lo || !test_and_clear_bit(NFS_LAYOUT_ROC, &lo->plh_flags) || test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) - goto out_nolayout; + goto out_noroc; + + /* Don't return layout if we hold a delegation */ + if (nfs4_check_delegation(ino, FMODE_READ)) + goto out_noroc; + + list_for_each_entry(ctx, &nfsi->open_files, list) { + state = ctx->state; + /* Don't return layout if there is open file state */ + if (state != NULL && state->state != 0) + goto out_noroc; + } + list_for_each_entry_safe(lseg, tmp, &lo->plh_segs, pls_list) if (test_bit(NFS_LSEG_ROC, &lseg->pls_flags)) { mark_lseg_invalid(lseg, &tmp_list); found = true; } if (!found) - goto out_nolayout; + goto out_noroc; lo->plh_block_lgets++; pnfs_get_layout_hdr(lo); /* matched in pnfs_roc_release */ spin_unlock(&ino->i_lock); pnfs_free_lseg_list(&tmp_list); return true; -out_nolayout: +out_noroc: spin_unlock(&ino->i_lock); return false; } |