[PATCH 30/33] nfs: swap vs nfs_writepage
From: Peter Zijlstra <hidden>
Date: 2007-10-30 16:16:53
Also in:
linux-mm, lkml
For now just use the ->writepage() path for swap traffic. Trond would like to see ->swap_page() or some such additional a_op. Signed-off-by: Peter Zijlstra <redacted> --- fs/nfs/write.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) Index: linux-2.6/fs/nfs/write.c ===================================================================
--- linux-2.6.orig/fs/nfs/write.c
+++ linux-2.6/fs/nfs/write.c@@ -336,6 +336,29 @@ static int nfs_do_writepage(struct page nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGE); nfs_add_stats(inode, NFSIOS_WRITEPAGES, 1); + if (unlikely(IS_SWAPFILE(inode))) { + struct rpc_cred *cred; + struct nfs_open_context *ctx; + int status; + + cred = rpcauth_lookupcred(NFS_CLIENT(inode)->cl_auth, 0); + if (IS_ERR(cred)) + return PTR_ERR(cred); + + ctx = nfs_find_open_context(inode, cred, FMODE_WRITE); + if (!ctx) + return -EBADF; + + status = nfs_writepage_setup(ctx, page, 0, nfs_page_length(page)); + + put_nfs_open_context(ctx); + + if (status < 0) { + nfs_set_pageerror(page); + return status; + } + } + nfs_pageio_cond_complete(pgio, page->index); return nfs_page_async_flush(pgio, page); } --