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authorTrond Myklebust <trond.myklebust@primarydata.com>2017-04-25 10:56:19 -0400
committerTrond Myklebust <trond.myklebust@primarydata.com>2017-04-25 10:56:19 -0400
commitb3230e80a6d115d2eb50fe3f4794ad04d84766de (patch)
treec0b55ff70d1643c37656e44b87d9f18e3256b58f /fs/nfs/pnfs.h
parentf30cb757f680f965ba8a2e53cb3588052a01aeb5 (diff)
pNFS: Ensure we check layout segment validity in the pg_init() callback
If we have a layout segment cached in pgio->pg_lseg, we should check it for validity before reusing it in a new RPC request. Otherwise, if we recoalesce, we can end up looping forever. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/pnfs.h')
-rw-r--r--fs/nfs/pnfs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 825a1b8ddc4f..2d05b756a8d6 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -234,6 +234,7 @@ void pnfs_put_lseg_locked(struct pnfs_layout_segment *lseg);
void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, struct nfs_fsinfo *);
void unset_pnfs_layoutdriver(struct nfs_server *);
+void pnfs_generic_pg_check_layout(struct nfs_pageio_descriptor *pgio);
void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *);
int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc);
void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio,