[PATCH v2 7/8] ext4: Count all requests in direct io
From: Zheng Liu <hidden>
Date: 2011-11-10 10:34:03
Also in:
linux-fsdevel
Subsystem:
ext4 file system, filesystems (vfs and infrastructure), the rest · Maintainers:
"Theodore Ts'o", Alexander Viro, Christian Brauner, Linus Torvalds
From: Zheng Liu <redacted> ext4_ios_submit_io() function is defined to be called by __blockdev_direct_IO() to count direct io. Signed-off-by: Zheng Liu <redacted> Signed-off-by: Wang Shaoyan <redacted> --- fs/ext4/ext4.h | 2 ++ fs/ext4/indirect.c | 2 +- fs/ext4/inode.c | 12 +++++++++++- 3 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 39a1495..68032e9 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h@@ -1916,6 +1916,8 @@ extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); extern qsize_t *ext4_get_reserved_space(struct inode *inode); extern void ext4_da_update_reserve_space(struct inode *inode, int used, int quota_claim); +extern void ext4_ios_submit_io(int rw, struct bio *bio, + struct inode *inode, loff_t file_offset); /* indirect.c */ extern int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index 0d7174e..a27bb19 100644
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c@@ -819,7 +819,7 @@ retry: ret = __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, offset, nr_segs, - ext4_get_block, NULL, NULL, 0); + ext4_get_block, NULL, ext4_ios_submit_io, 0); } else { ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs, ext4_get_block);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index e552fb2..600a742 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c@@ -2962,7 +2962,7 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb, offset, nr_segs, ext4_get_block_write, ext4_end_io_dio, - NULL, + ext4_ios_submit_io, DIO_LOCKING | DIO_SKIP_HOLES); if (iocb->private) EXT4_I(inode)->cur_aio_dio = NULL;
@@ -3003,6 +3003,16 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb, return ext4_ind_direct_IO(rw, iocb, iov, offset, nr_segs); } +void ext4_ios_submit_io(int rw, struct bio *bio, + struct inode *inode, loff_t file_offset) +{ + int tmprw = !!rw; + + /* ext4 io type statistic */ + __ext4_io_stat(tmprw, EXT4_IOS_REGULAR_DATA, ext4_blocks_per_page(inode)); + submit_bio(rw, bio); +} + static ssize_t ext4_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, loff_t offset, unsigned long nr_segs)
--
1.7.4.1