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| author |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-01-22 17:13:07 -0500 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-01-30 02:05:24 -0500 |
| commit | acee478afc6ff7e1b8852d9a4dca1ff36021414d (patch) | |
| tree | 94aa75336122b4914af0cfa91eaf1329b2c519d3 /fs/nfs/pagelist.c | |
| parent | NFS: Optimise nfs_vm_page_mkwrite() (diff) | |
| download | linux-dev-acee478afc6ff7e1b8852d9a4dca1ff36021414d.tar.xz linux-dev-acee478afc6ff7e1b8852d9a4dca1ff36021414d.zip | |
NFS: Clean up the write request locking.
Ensure that we set/clear NFS_PAGE_TAG_LOCKED when the nfs_page is hashed.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/pagelist.c')
| -rw-r--r-- | fs/nfs/pagelist.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 345bb9b4765b..3b3dbb94393d 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -111,13 +111,14 @@ void nfs_unlock_request(struct nfs_page *req) * nfs_set_page_tag_locked - Tag a request as locked * @req: */ -static int nfs_set_page_tag_locked(struct nfs_page *req) +int nfs_set_page_tag_locked(struct nfs_page *req) { struct nfs_inode *nfsi = NFS_I(req->wb_context->path.dentry->d_inode); - if (!nfs_lock_request(req)) + if (!nfs_lock_request_dontget(req)) return 0; - radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED); + if (req->wb_page != NULL) + radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED); return 1; } @@ -132,9 +133,10 @@ void nfs_clear_page_tag_locked(struct nfs_page *req) if (req->wb_page != NULL) { spin_lock(&inode->i_lock); radix_tree_tag_clear(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED); + nfs_unlock_request(req); spin_unlock(&inode->i_lock); - } - nfs_unlock_request(req); + } else + nfs_unlock_request(req); } /** @@ -421,6 +423,7 @@ int nfs_scan_list(struct nfs_inode *nfsi, goto out; idx_start = req->wb_index + 1; if (nfs_set_page_tag_locked(req)) { + kref_get(&req->wb_kref); nfs_list_remove_request(req); radix_tree_tag_clear(&nfsi->nfs_page_tree, req->wb_index, tag); |