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authorWeston Andros Adamson <dros@primarydata.com>2014-05-15 11:56:43 -0400
committerTrond Myklebust <trond.myklebust@primarydata.com>2014-05-29 11:11:43 -0400
commitb4fdac1a5150174df0847a45dc6612ce5ce3daeb (patch)
tree477f3dc72760a8ff622934723c4a984cd4c9ce5d /fs/nfs/pnfs.h
parent8c8f1ac109726e4ed44a920f5c962c84610d4a17 (diff)
downloadblackbird-op-linux-b4fdac1a5150174df0847a45dc6612ce5ce3daeb.tar.gz
blackbird-op-linux-b4fdac1a5150174df0847a45dc6612ce5ce3daeb.zip
nfs: modify pg_test interface to return size_t
This is a step toward allowing pg_test to inform the the coalescing code to reduce the size of requests so they may fit in whatever scheme the pg_test callback wants to define. For now, just return the size of the request if there is space, or 0 if there is not. This shouldn't change any behavior as it acts the same as when the pg_test functions returned bool. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/pnfs.h')
-rw-r--r--fs/nfs/pnfs.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 0031267d7492..dccf182ec4d8 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -187,7 +187,8 @@ int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc);
void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio,
struct nfs_page *req, u64 wb_size);
int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc);
-bool pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, struct nfs_page *req);
+size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio,
+ struct nfs_page *prev, struct nfs_page *req);
void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg);
struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp);
void pnfs_free_lseg_list(struct list_head *tmp_list);
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