From patchwork Thu Feb 11 16:56:56 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Sterba X-Patchwork-Id: 8282821 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 19F0B9F1C0 for ; Thu, 11 Feb 2016 16:57:44 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C65C1202E9 for ; Thu, 11 Feb 2016 16:57:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A1F2A20260 for ; Thu, 11 Feb 2016 16:57:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751226AbcBKQ46 (ORCPT ); Thu, 11 Feb 2016 11:56:58 -0500 Received: from mx2.suse.de ([195.135.220.15]:39699 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751210AbcBKQ45 (ORCPT ); Thu, 11 Feb 2016 11:56:57 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 579DCAB9D for ; Thu, 11 Feb 2016 16:56:56 +0000 (UTC) Received: by ds.suse.cz (Postfix, from userid 10065) id 1BFB0DA84E; Thu, 11 Feb 2016 17:56:56 +0100 (CET) From: David Sterba To: linux-btrfs@vger.kernel.org Cc: David Sterba Subject: [PATCH 1/9] btrfs: send: use GFP_KERNEL everywhere Date: Thu, 11 Feb 2016 17:56:56 +0100 Message-Id: X-Mailer: git-send-email 2.7.1 In-Reply-To: References: Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The send operation is not on the critical writeback path we don't need to use GFP_NOFS for allocations. All error paths are handled and the whole operation is restartable. Signed-off-by: David Sterba --- fs/btrfs/ctree.c | 2 +- fs/btrfs/send.c | 36 ++++++++++++++++++------------------ 2 files changed, 19 insertions(+), 19 deletions(-) diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 769e0ff1b4ce..00741eb94651 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -5361,7 +5361,7 @@ int btrfs_compare_trees(struct btrfs_root *left_root, goto out; } - tmp_buf = kmalloc(left_root->nodesize, GFP_NOFS); + tmp_buf = kmalloc(left_root->nodesize, GFP_KERNEL); if (!tmp_buf) { ret = -ENOMEM; goto out; diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 63a6152be04b..d2e29925f1da 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -304,7 +304,7 @@ static struct fs_path *fs_path_alloc(void) { struct fs_path *p; - p = kmalloc(sizeof(*p), GFP_NOFS); + p = kmalloc(sizeof(*p), GFP_KERNEL); if (!p) return NULL; p->reversed = 0; @@ -363,11 +363,11 @@ static int fs_path_ensure_buf(struct fs_path *p, int len) * First time the inline_buf does not suffice */ if (p->buf == p->inline_buf) { - tmp_buf = kmalloc(len, GFP_NOFS); + tmp_buf = kmalloc(len, GFP_KERNEL); if (tmp_buf) memcpy(tmp_buf, p->buf, old_buf_len); } else { - tmp_buf = krealloc(p->buf, len, GFP_NOFS); + tmp_buf = krealloc(p->buf, len, GFP_KERNEL); } if (!tmp_buf) return -ENOMEM; @@ -995,7 +995,7 @@ static int iterate_dir_item(struct btrfs_root *root, struct btrfs_path *path, * values are small. */ buf_len = PATH_MAX; - buf = kmalloc(buf_len, GFP_NOFS); + buf = kmalloc(buf_len, GFP_KERNEL); if (!buf) { ret = -ENOMEM; goto out; @@ -1042,7 +1042,7 @@ static int iterate_dir_item(struct btrfs_root *root, struct btrfs_path *path, buf = NULL; } else { char *tmp = krealloc(buf, buf_len, - GFP_NOFS | __GFP_NOWARN); + GFP_KERNEL | __GFP_NOWARN); if (!tmp) kfree(buf); @@ -1303,7 +1303,7 @@ static int find_extent_clone(struct send_ctx *sctx, /* We only use this path under the commit sem */ tmp_path->need_commit_sem = 0; - backref_ctx = kmalloc(sizeof(*backref_ctx), GFP_NOFS); + backref_ctx = kmalloc(sizeof(*backref_ctx), GFP_KERNEL); if (!backref_ctx) { ret = -ENOMEM; goto out; @@ -1984,7 +1984,7 @@ static int name_cache_insert(struct send_ctx *sctx, nce_head = radix_tree_lookup(&sctx->name_cache, (unsigned long)nce->ino); if (!nce_head) { - nce_head = kmalloc(sizeof(*nce_head), GFP_NOFS); + nce_head = kmalloc(sizeof(*nce_head), GFP_KERNEL); if (!nce_head) { kfree(nce); return -ENOMEM; @@ -2179,7 +2179,7 @@ static int __get_cur_name_and_parent(struct send_ctx *sctx, /* * Store the result of the lookup in the name cache. */ - nce = kmalloc(sizeof(*nce) + fs_path_len(dest) + 1, GFP_NOFS); + nce = kmalloc(sizeof(*nce) + fs_path_len(dest) + 1, GFP_KERNEL); if (!nce) { ret = -ENOMEM; goto out; @@ -2315,7 +2315,7 @@ static int send_subvol_begin(struct send_ctx *sctx) if (!path) return -ENOMEM; - name = kmalloc(BTRFS_PATH_NAME_MAX, GFP_NOFS); + name = kmalloc(BTRFS_PATH_NAME_MAX, GFP_KERNEL); if (!name) { btrfs_free_path(path); return -ENOMEM; @@ -2730,7 +2730,7 @@ static int __record_ref(struct list_head *head, u64 dir, { struct recorded_ref *ref; - ref = kmalloc(sizeof(*ref), GFP_NOFS); + ref = kmalloc(sizeof(*ref), GFP_KERNEL); if (!ref) return -ENOMEM; @@ -2755,7 +2755,7 @@ static int dup_ref(struct recorded_ref *ref, struct list_head *list) { struct recorded_ref *new; - new = kmalloc(sizeof(*ref), GFP_NOFS); + new = kmalloc(sizeof(*ref), GFP_KERNEL); if (!new) return -ENOMEM; @@ -2818,7 +2818,7 @@ add_orphan_dir_info(struct send_ctx *sctx, u64 dir_ino) struct rb_node *parent = NULL; struct orphan_dir_info *entry, *odi; - odi = kmalloc(sizeof(*odi), GFP_NOFS); + odi = kmalloc(sizeof(*odi), GFP_KERNEL); if (!odi) return ERR_PTR(-ENOMEM); odi->ino = dir_ino; @@ -2973,7 +2973,7 @@ static int add_waiting_dir_move(struct send_ctx *sctx, u64 ino, bool orphanized) struct rb_node *parent = NULL; struct waiting_dir_move *entry, *dm; - dm = kmalloc(sizeof(*dm), GFP_NOFS); + dm = kmalloc(sizeof(*dm), GFP_KERNEL); if (!dm) return -ENOMEM; dm->ino = ino; @@ -3040,7 +3040,7 @@ static int add_pending_dir_move(struct send_ctx *sctx, int exists = 0; int ret; - pm = kmalloc(sizeof(*pm), GFP_NOFS); + pm = kmalloc(sizeof(*pm), GFP_KERNEL); if (!pm) return -ENOMEM; pm->parent_ino = parent_ino; @@ -4280,7 +4280,7 @@ static int __find_xattr(int num, struct btrfs_key *di_key, strncmp(name, ctx->name, name_len) == 0) { ctx->found_idx = num; ctx->found_data_len = data_len; - ctx->found_data = kmemdup(data, data_len, GFP_NOFS); + ctx->found_data = kmemdup(data, data_len, GFP_KERNEL); if (!ctx->found_data) return -ENOMEM; return 1; @@ -4481,7 +4481,7 @@ static ssize_t fill_read_buf(struct send_ctx *sctx, u64 offset, u32 len) while (index <= last_index) { unsigned cur_len = min_t(unsigned, len, PAGE_CACHE_SIZE - pg_offset); - page = find_or_create_page(inode->i_mapping, index, GFP_NOFS); + page = find_or_create_page(inode->i_mapping, index, GFP_KERNEL); if (!page) { ret = -ENOMEM; break; @@ -5989,7 +5989,7 @@ long btrfs_ioctl_send(struct file *mnt_file, void __user *arg_) goto out; } - sctx = kzalloc(sizeof(struct send_ctx), GFP_NOFS); + sctx = kzalloc(sizeof(struct send_ctx), GFP_KERNEL); if (!sctx) { ret = -ENOMEM; goto out; @@ -5997,7 +5997,7 @@ long btrfs_ioctl_send(struct file *mnt_file, void __user *arg_) INIT_LIST_HEAD(&sctx->new_refs); INIT_LIST_HEAD(&sctx->deleted_refs); - INIT_RADIX_TREE(&sctx->name_cache, GFP_NOFS); + INIT_RADIX_TREE(&sctx->name_cache, GFP_KERNEL); INIT_LIST_HEAD(&sctx->name_cache_list); sctx->flags = arg->flags;