From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Monakhov Subject: [PATCH 1/5] Add unlocked version of inode_add_bytes() function Date: Mon, 14 Dec 2009 15:21:12 +0300 Message-ID: <1260793276-8511-1-git-send-email-dmonakhov@openvz.org> Content-Transfer-Encoding: 7BIT Cc: linux-fsdevel@vger.kernel.org, Dmitry Monakhov To: Jan Kara Return-path: Received: from mail.2ka.mipt.ru ([194.85.80.4]:34674 "EHLO mail.2ka.mipt.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757211AbZLNMVa (ORCPT ); Mon, 14 Dec 2009 07:21:30 -0500 Received: from localhost.localdomain ([unknown] [10.55.87.200]) by mail.2ka.mipt.ru (Sun Java(tm) System Messaging Server 7u2-7.02 64bit (built Apr 16 2009)) with ESMTPA id <0KUN00JOS6JL8D40@mail.2ka.mipt.ru> for linux-fsdevel@vger.kernel.org; Mon, 14 Dec 2009 15:26:21 +0300 (MSK) Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Quota code requires unlocked version of this function. Off course we can just copy-paste the code, but copy-pasting is always an evil. Signed-off-by: Dmitry Monakhov --- fs/stat.c | 10 ++++++++-- include/linux/fs.h | 1 + 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/fs/stat.c b/fs/stat.c index 075694e..c4ecd52 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -401,9 +401,9 @@ SYSCALL_DEFINE4(fstatat64, int, dfd, char __user *, filename, } #endif /* __ARCH_WANT_STAT64 */ -void inode_add_bytes(struct inode *inode, loff_t bytes) +/* Caller is here responsible for sufficient locking (ie. inode->i_lock) */ +void __inode_add_bytes(struct inode *inode, loff_t bytes) { - spin_lock(&inode->i_lock); inode->i_blocks += bytes >> 9; bytes &= 511; inode->i_bytes += bytes; @@ -411,6 +411,12 @@ void inode_add_bytes(struct inode *inode, loff_t bytes) inode->i_blocks++; inode->i_bytes -= 512; } +} + +void inode_add_bytes(struct inode *inode, loff_t bytes) +{ + spin_lock(&inode->i_lock); + __inode_add_bytes(inode, bytes); spin_unlock(&inode->i_lock); } diff --git a/include/linux/fs.h b/include/linux/fs.h index 2620a8c..98ea200 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2314,6 +2314,7 @@ extern const struct inode_operations page_symlink_inode_operations; extern int generic_readlink(struct dentry *, char __user *, int); extern void generic_fillattr(struct inode *, struct kstat *); extern int vfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); +void __inode_add_bytes(struct inode *inode, loff_t bytes); void inode_add_bytes(struct inode *inode, loff_t bytes); void inode_sub_bytes(struct inode *inode, loff_t bytes); loff_t inode_get_bytes(struct inode *inode); -- 1.6.0.4