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authorJoseph Qi <joseph.qi@huawei.com>2015-02-17 03:00:00 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-17 04:56:05 +0300
commit24c40b329e03dd38a1ca2225c739db67f4441343 (patch)
treeac44a8faee0103987e75fd01885042745d645421 /fs/ocfs2/ocfs2.h
parented460cffc26ba4ec663a89589d81290ca92c5010 (diff)
downloadlinux-24c40b329e03dd38a1ca2225c739db67f4441343.tar.xz
ocfs2: implement ocfs2_direct_IO_write
Implement ocfs2_direct_IO_write. Add the inode to orphan dir first, and then delete it once append O_DIRECT finished. This is to make sure block allocation and inode size are consistent. [akpm@linux-foundation.org: fix it for "block: Add discard flag to blkdev_issue_zeroout() function"] Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Weiwei Wang <wangww631@huawei.com> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Xuejiufei <xuejiufei@huawei.com> Cc: alex chen <alex.chen@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/ocfs2.h')
-rw-r--r--fs/ocfs2/ocfs2.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index df9a95cbea3a..7e39cd654834 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -731,6 +731,16 @@ static inline unsigned int ocfs2_clusters_for_bytes(struct super_block *sb,
return clusters;
}
+static inline unsigned int ocfs2_bytes_to_clusters(struct super_block *sb,
+ u64 bytes)
+{
+ int cl_bits = OCFS2_SB(sb)->s_clustersize_bits;
+ unsigned int clusters;
+
+ clusters = (unsigned int)(bytes >> cl_bits);
+ return clusters;
+}
+
static inline u64 ocfs2_blocks_for_bytes(struct super_block *sb,
u64 bytes)
{