From 44b83799a922a153957c65ccfc985a8c902958c8 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Thu, 3 Mar 2011 15:13:44 +0000 Subject: NFSv4.1: trigger LAYOUTGET for writes Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- fs/nfs/write.c | 32 ++++++++++++++++++++------------ 1 file changed, 20 insertions(+), 12 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 72b0ec0bb0e1..49c4784c24e5 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -919,6 +919,8 @@ static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned } while (nbytes != 0); atomic_set(&req->wb_complete, requests); + BUG_ON(lseg); + lseg = pnfs_update_layout(inode, req->wb_context, IOMODE_RW); ClearPageError(page); offset = 0; nbytes = count; @@ -940,6 +942,7 @@ static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned nbytes -= wsize; } while (nbytes != 0); + put_lseg(lseg); return ret; out_bad: @@ -965,11 +968,18 @@ static int nfs_flush_one(struct inode *inode, struct list_head *head, unsigned i struct nfs_page *req; struct page **pages; struct nfs_write_data *data; + int ret; data = nfs_writedata_alloc(npages); - if (!data) - goto out_bad; - + if (!data) { + while (!list_empty(head)) { + req = nfs_list_entry(head->next); + nfs_list_remove_request(req); + nfs_redirty_request(req); + } + ret = -ENOMEM; + goto out; + } pages = data->pagevec; while (!list_empty(head)) { req = nfs_list_entry(head->next); @@ -979,16 +989,14 @@ static int nfs_flush_one(struct inode *inode, struct list_head *head, unsigned i *pages++ = req->wb_page; } req = nfs_list_entry(data->pages.next); + if ((!lseg) && list_is_singular(&data->pages)) + lseg = pnfs_update_layout(inode, req->wb_context, IOMODE_RW); /* Set up the argument struct */ - return nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, lseg, how); - out_bad: - while (!list_empty(head)) { - req = nfs_list_entry(head->next); - nfs_list_remove_request(req); - nfs_redirty_request(req); - } - return -ENOMEM; + ret = nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, lseg, how); +out: + put_lseg(lseg); /* Cleans any gotten in ->pg_test */ + return ret; } static void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, @@ -996,7 +1004,7 @@ static void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, { size_t wsize = NFS_SERVER(inode)->wsize; - pgio->pg_test = NULL; + pnfs_pageio_init_write(pgio, inode); if (wsize < PAGE_CACHE_SIZE) nfs_pageio_init(pgio, inode, nfs_flush_multi, wsize, ioflags); -- cgit v1.2.3