linux-kernel - [PATCH] fs: add roundup_to_blocksize and bytes_to

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Message-ID: <49EB7087.70302@gmail.com>
Date:	Sun, 19 Apr 2009 20:42:15 +0200
From:	Marcin Slusarz <marcin.slusarz@...il.com>
To:	linux-fsdevel <linux-fsdevel@...r.kernel.org>
CC:	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] fs: add roundup_to_blocksize and bytes_to_blocks helper functions

bytes_to_blocks is open coded in more than 30 places
roundup_to_blocksize is open coded in more than 15 places

Signed-off-by: Marcin Slusarz <marcin.slusarz@...il.com>
---
 include/linux/fs.h |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index e766be0..1b4e5b6 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2451,5 +2451,17 @@ int proc_nr_files(struct ctl_table *table, int write, struct file *filp,
 
 int get_filesystem_list(char * buf);
 
+static inline
+unsigned long long roundup_to_blocksize(unsigned long long bytes, struct super_block *sb)
+{
+	return (bytes + sb->s_blocksize - 1) & ~(sb->s_blocksize - 1);
+}
+
+static inline
+blkcnt_t bytes_to_blocks(unsigned long long bytes, struct super_block *sb)
+{
+	return (bytes + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
+}
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_FS_H */
-- 
1.6.0.6

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