ext4: mechanical rename some of the direct I/O get_block's identifiers
This commit renames some of the direct I/O's block allocation flags,
variables, and functions introduced in Mingming's "Direct IO for holes
and fallocate" patches so that they can be used by ext4's buffered
write path as well. Also changed the related function comments
accordingly to cover both direct write and buffered write cases.
Signed-off-by: Jiaying Zhang <jiayingz@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index a2c21aa..90ba8d9 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -1619,7 +1619,7 @@
BUG_ON(path[depth].p_hdr == NULL);
/* try to insert block into found extent and return */
- if (ex && (flag != EXT4_GET_BLOCKS_DIO_CREATE_EXT)
+ if (ex && (flag != EXT4_GET_BLOCKS_PRE_IO)
&& ext4_can_extents_be_merged(inode, ex, newext)) {
ext_debug("append [%d]%d block to %d:[%d]%d (from %llu)\n",
ext4_ext_is_uninitialized(newext),
@@ -1740,7 +1740,7 @@
merge:
/* try to merge extents to the right */
- if (flag != EXT4_GET_BLOCKS_DIO_CREATE_EXT)
+ if (flag != EXT4_GET_BLOCKS_PRE_IO)
ext4_ext_try_to_merge(inode, path, nearex);
/* try to merge extents to the left */
@@ -2984,7 +2984,7 @@
ext4_ext_dirty(handle, inode, path + depth);
return err;
}
-static int ext4_convert_unwritten_extents_dio(handle_t *handle,
+static int ext4_convert_unwritten_extents_endio(handle_t *handle,
struct inode *inode,
struct ext4_ext_path *path)
{
@@ -3064,8 +3064,8 @@
flags, allocated);
ext4_ext_show_leaf(inode, path);
- /* DIO get_block() before submit the IO, split the extent */
- if (flags == EXT4_GET_BLOCKS_DIO_CREATE_EXT) {
+ /* get_block() before submit the IO, split the extent */
+ if (flags == EXT4_GET_BLOCKS_PRE_IO) {
ret = ext4_split_unwritten_extents(handle,
inode, path, iblock,
max_blocks, flags);
@@ -3075,14 +3075,14 @@
* completed
*/
if (io)
- io->flag = DIO_AIO_UNWRITTEN;
+ io->flag = EXT4_IO_UNWRITTEN;
else
ext4_set_inode_state(inode, EXT4_STATE_DIO_UNWRITTEN);
goto out;
}
- /* async DIO end_io complete, convert the filled extent to written */
- if (flags == EXT4_GET_BLOCKS_DIO_CONVERT_EXT) {
- ret = ext4_convert_unwritten_extents_dio(handle, inode,
+ /* IO end_io complete, convert the filled extent to written */
+ if (flags == EXT4_GET_BLOCKS_CONVERT) {
+ ret = ext4_convert_unwritten_extents_endio(handle, inode,
path);
if (ret >= 0)
ext4_update_inode_fsync_trans(handle, inode, 1);
@@ -3359,9 +3359,9 @@
* For non asycn direct IO case, flag the inode state
* that we need to perform convertion when IO is done.
*/
- if (flags == EXT4_GET_BLOCKS_DIO_CREATE_EXT) {
+ if (flags == EXT4_GET_BLOCKS_PRE_IO) {
if (io)
- io->flag = DIO_AIO_UNWRITTEN;
+ io->flag = EXT4_IO_UNWRITTEN;
else
ext4_set_inode_state(inode,
EXT4_STATE_DIO_UNWRITTEN);
@@ -3656,7 +3656,7 @@
map_bh.b_state = 0;
ret = ext4_get_blocks(handle, inode, block,
max_blocks, &map_bh,
- EXT4_GET_BLOCKS_DIO_CONVERT_EXT);
+ EXT4_GET_BLOCKS_IO_CONVERT_EXT);
if (ret <= 0) {
WARN_ON(ret <= 0);
printk(KERN_ERR "%s: ext4_ext_get_blocks "
