diff options
Diffstat (limited to 'fs/nfs/pagelist.c')
| -rw-r--r-- | fs/nfs/pagelist.c | 35 |
1 files changed, 28 insertions, 7 deletions
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 4f1ba723848..80777f99a58 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -107,7 +107,7 @@ void nfs_unlock_request(struct nfs_page *req) smp_mb__before_clear_bit(); clear_bit(PG_BUSY, &req->wb_flags); smp_mb__after_clear_bit(); - wake_up_all(&req->wb_context->waitq); + wake_up_bit(&req->wb_flags, PG_BUSY); nfs_release_request(req); } @@ -180,6 +180,17 @@ nfs_list_add_request(struct nfs_page *req, struct list_head *head) req->wb_list_head = head; } +static int nfs_wait_bit_interruptible(void *word) +{ + int ret = 0; + + if (signal_pending(current)) + ret = -ERESTARTSYS; + else + schedule(); + return ret; +} + /** * nfs_wait_on_request - Wait for a request to complete. * @req: request to wait upon. @@ -190,12 +201,22 @@ nfs_list_add_request(struct nfs_page *req, struct list_head *head) int nfs_wait_on_request(struct nfs_page *req) { - struct inode *inode = req->wb_context->dentry->d_inode; - struct rpc_clnt *clnt = NFS_CLIENT(inode); - - if (!NFS_WBACK_BUSY(req)) - return 0; - return nfs_wait_event(clnt, req->wb_context->waitq, !NFS_WBACK_BUSY(req)); + struct rpc_clnt *clnt = NFS_CLIENT(req->wb_context->dentry->d_inode); + sigset_t oldmask; + int ret = 0; + + if (!test_bit(PG_BUSY, &req->wb_flags)) + goto out; + /* + * Note: the call to rpc_clnt_sigmask() suffices to ensure that we + * are not interrupted if intr flag is not set + */ + rpc_clnt_sigmask(clnt, &oldmask); + ret = out_of_line_wait_on_bit(&req->wb_flags, PG_BUSY, + nfs_wait_bit_interruptible, TASK_INTERRUPTIBLE); + rpc_clnt_sigunmask(clnt, &oldmask); +out: + return ret; } /** |