[PATCH 01/10] ext4: ext4_inode_info diet
From: Dmitry Monakhov <hidden>
Date: 2012-09-24 11:44:31
Subsystem:
ext4 file system, filesystems (vfs and infrastructure), the rest · Maintainers:
"Theodore Ts'o", Alexander Viro, Christian Brauner, Linus Torvalds
Generic inode has unused i_private pointer which may be used as cur_aio_dio
storage.
TODO: If cur_aio_dio will be passed as an argument to get_block_t this allow
to have concurent AIO_DIO requests.
Reviewed-by: Zheng Liu <redacted>
Signed-off-by: Dmitry Monakhov <redacted>
---
fs/ext4/ext4.h | 5 +++--
fs/ext4/extents.c | 4 ++--
fs/ext4/inode.c | 6 +++---
fs/ext4/super.c | 1 -
4 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 8b6902c..e59fbc5 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h@@ -912,8 +912,6 @@ struct ext4_inode_info { struct list_head i_completed_io_list; spinlock_t i_completed_io_lock; atomic_t i_ioend_count; /* Number of outstanding io_end structs */ - /* current io_end structure for async DIO write*/ - ext4_io_end_t *cur_aio_dio; atomic_t i_aiodio_unwritten; /* Nr. of inflight conversions pending */ spinlock_t i_block_reservation_lock;
@@ -929,6 +927,9 @@ struct ext4_inode_info { __u32 i_csum_seed; }; +/* current io_end structure for async DIO write */ +#define EXT4_CUR_AIO_DIO(inode) (inode)->i_private + /* * File system states */
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index cc6d2b9..6eb6b0c 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c@@ -3645,7 +3645,7 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode, { int ret = 0; int err = 0; - ext4_io_end_t *io = EXT4_I(inode)->cur_aio_dio; + ext4_io_end_t *io = (ext4_io_end_t*) EXT4_CUR_AIO_DIO(inode); ext_debug("ext4_ext_handle_uninitialized_extents: inode %lu, logical " "block %llu, max_blocks %u, flags %x, allocated %u\n",
@@ -3903,7 +3903,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, unsigned int allocated = 0, offset = 0; unsigned int allocated_clusters = 0; struct ext4_allocation_request ar; - ext4_io_end_t *io = EXT4_I(inode)->cur_aio_dio; + ext4_io_end_t *io = (ext4_io_end_t*) EXT4_CUR_AIO_DIO(inode); ext4_lblk_t cluster_offset; ext_debug("blocks %u/%u requested for inode %lu\n",
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 462f4b3..05206ba 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c@@ -3057,7 +3057,7 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb, * hook to the iocb. */ iocb->private = NULL; - EXT4_I(inode)->cur_aio_dio = NULL; + EXT4_CUR_AIO_DIO(inode) = NULL; if (!is_sync_kiocb(iocb)) { ext4_io_end_t *io_end = ext4_init_io_end(inode, GFP_NOFS);
@@ -3074,7 +3074,7 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb, * is a unwritten extents needs to be converted * when IO is completed. */ - EXT4_I(inode)->cur_aio_dio = iocb->private; + EXT4_CUR_AIO_DIO(inode) = iocb->private; } if (overwrite)
@@ -3094,7 +3094,7 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb, NULL, DIO_LOCKING); if (iocb->private) - EXT4_I(inode)->cur_aio_dio = NULL; + EXT4_CUR_AIO_DIO(inode) = NULL; /* * The io_end structure takes a reference to the inode, * that structure needs to be destroyed and the
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index eb7722a..64acf55 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c@@ -965,7 +965,6 @@ static struct inode *ext4_alloc_inode(struct super_block *sb) ei->jinode = NULL; INIT_LIST_HEAD(&ei->i_completed_io_list); spin_lock_init(&ei->i_completed_io_lock); - ei->cur_aio_dio = NULL; ei->i_sync_tid = 0; ei->i_datasync_tid = 0; atomic_set(&ei->i_ioend_count, 0);
--
1.7.7.6