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Thu, 25 Jun 2026 01:36:24 -0700 (PDT) Received: from localhost ([212.73.77.104]) by smtp.gmail.com with UTF8SMTPSA id ffacd0b85a97d-46c2279b85csm13362284f8f.28.2026.06.25.01.36.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 25 Jun 2026 01:36:23 -0700 (PDT) From: Askar Safin To: linux-fsdevel@vger.kernel.org, Christian Brauner , Alexander Viro , Jan Kara Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-api@vger.kernel.org, netdev@vger.kernel.org, fuse-devel@lists.linux.dev, Linus Torvalds , Matthew Wilcox , Jens Axboe , Christoph Hellwig , David Howells , Andrew Morton , David Hildenbrand , Pedro Falcato , Miklos Szeredi , Andy Lutomirski , Collin Funk , David Laight , Stefan Metzmacher , The 8472 , Willy Tarreau , Joanne Koong , Val Packett , Andrei Vagin , patches@lists.linux.dev Subject: [PATCH v2 4/7] pipe: move wait_for_space to fs/pipe.c and rename it Date: Thu, 25 Jun 2026 08:34:06 +0000 Message-ID: <20260625083409.3769242-5-safinaskar@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260625083409.3769242-1-safinaskar@gmail.com> References: <20260625083409.3769242-1-safinaskar@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: B21D7140004 X-Rspam-User: X-Stat-Signature: igabqbresnybkfgko9ci91177fgr9yy8 X-HE-Tag: 1782376585-609385 X-HE-Meta: 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 xBNoLcrx 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: This is needed, because I plan to use it in fs/read_write.c. Signed-off-by: Askar Safin --- fs/pipe.c | 17 +++++++++++++++++ fs/splice.c | 19 +------------------ include/linux/pipe_fs_i.h | 2 ++ 3 files changed, 20 insertions(+), 18 deletions(-) diff --git a/fs/pipe.c b/fs/pipe.c index 9841648c9..c0ccf21b9 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -1451,6 +1451,23 @@ long pipe_fcntl(struct file *file, unsigned int cmd, unsigned int arg) return ret; } +int pipe_wait_for_space(struct pipe_inode_info *pipe, bool non_block) +{ + for (;;) { + if (unlikely(!pipe->readers)) { + send_sig(SIGPIPE, current, 0); + return -EPIPE; + } + if (!pipe_is_full(pipe)) + return 0; + if (non_block) + return -EAGAIN; + if (signal_pending(current)) + return -ERESTARTSYS; + pipe_wait_writable(pipe); + } +} + static const struct super_operations pipefs_ops = { .destroy_inode = free_inode_nonrcu, .statfs = simple_statfs, diff --git a/fs/splice.c b/fs/splice.c index 707db2c2c..d12243d19 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -1239,23 +1239,6 @@ ssize_t splice_file_range(struct file *in, loff_t *ppos, struct file *out, } EXPORT_SYMBOL(splice_file_range); -static int wait_for_space(struct pipe_inode_info *pipe, bool non_block) -{ - for (;;) { - if (unlikely(!pipe->readers)) { - send_sig(SIGPIPE, current, 0); - return -EPIPE; - } - if (!pipe_is_full(pipe)) - return 0; - if (non_block) - return -EAGAIN; - if (signal_pending(current)) - return -ERESTARTSYS; - pipe_wait_writable(pipe); - } -} - static int splice_pipe_to_pipe(struct pipe_inode_info *ipipe, struct pipe_inode_info *opipe, size_t len, unsigned int flags); @@ -1268,7 +1251,7 @@ ssize_t splice_file_to_pipe(struct file *in, ssize_t ret; pipe_lock(opipe); - ret = wait_for_space(opipe, flags & SPLICE_F_NONBLOCK); + ret = pipe_wait_for_space(opipe, flags & SPLICE_F_NONBLOCK); if (!ret) ret = do_splice_read(in, offset, opipe, len, flags); pipe_unlock(opipe); diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h index a1eeed800..be653625d 100644 --- a/include/linux/pipe_fs_i.h +++ b/include/linux/pipe_fs_i.h @@ -335,4 +335,6 @@ struct pipe_inode_info *get_pipe_info(struct file *file, bool for_splice); int create_pipe_files(struct file **, int); unsigned int round_pipe_size(unsigned int size); +int pipe_wait_for_space(struct pipe_inode_info *pipe, bool non_block); + #endif -- 2.47.3