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ext4: fold ext4_generic_write_end() into ext4_write_end() 

After collapsing the handling of data ordered and data writeback
codepath, ext4_generic_write_end() has only one caller,
ext4_write_end().  So we fold it into ext4_write_end().

Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
This commit is contained in:
Zheng Liu 2013-04-03 12:41:17 -04:00 committed by Theodore Ts'o
parent 74d553aad7
commit eed4333f08
1 changed files with 27 additions and 40 deletions
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67
fs/ext4/inode.c
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@ -1087,14 +1087,32 @@ static int write_end_fn(handle_t *handle, struct buffer_head *bh)
return ext4_handle_dirty_metadata(handle, NULL, bh);
}
static int ext4_generic_write_end(struct file *file,
struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
struct page *page, void *fsdata)
/*
* We need to pick up the new inode size which generic_commit_write gave us
* `file' can be NULL - eg, when called from page_symlink().
*
* ext4 never places buffers on inode->i_mapping->private_list. metadata
* buffers are managed internally.
*/
static int ext4_write_end(struct file *file,
struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
struct page *page, void *fsdata)
{
int i_size_changed = 0;
struct inode *inode = mapping->host;
handle_t *handle = ext4_journal_current_handle();
struct inode *inode = mapping->host;
int ret = 0, ret2;
int i_size_changed = 0;
trace_ext4_write_end(inode, pos, len, copied);
if (ext4_test_inode_state(inode, EXT4_STATE_ORDERED_MODE)) {
ret = ext4_jbd2_file_inode(handle, inode);
if (ret) {
unlock_page(page);
page_cache_release(page);
goto errout;
}
}
if (ext4_has_inline_data(inode))
copied = ext4_write_inline_data_end(inode, pos, len,
@ -1105,7 +1123,7 @@ static int ext4_generic_write_end(struct file *file,
/*
* No need to use i_size_read() here, the i_size
* cannot change under us because we hold i_mutex.
* cannot change under us because we hole i_mutex.
*
* But it's important to update i_size while still holding page lock:
* page writeout could otherwise come in and zero beyond i_size.
@ -1115,10 +1133,10 @@ static int ext4_generic_write_end(struct file *file,
i_size_changed = 1;
}
if (pos + copied > EXT4_I(inode)->i_disksize) {
if (pos + copied > EXT4_I(inode)->i_disksize) {
/* We need to mark inode dirty even if
* new_i_size is less that inode->i_size
* bu greater than i_disksize.(hint delalloc)
* but greater than i_disksize. (hint delalloc)
*/
ext4_update_i_disksize(inode, (pos + copied));
i_size_changed = 1;
@ -1135,37 +1153,6 @@ static int ext4_generic_write_end(struct file *file,
if (i_size_changed)
ext4_mark_inode_dirty(handle, inode);
return copied;
}
/*
* We need to pick up the new inode size which generic_commit_write gave us
* `file' can be NULL - eg, when called from page_symlink().
*
* ext4 never places buffers on inode->i_mapping->private_list. metadata
* buffers are managed internally.
*/
static int ext4_write_end(struct file *file,
struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
struct page *page, void *fsdata)
{
handle_t *handle = ext4_journal_current_handle();
struct inode *inode = mapping->host;
int ret = 0, ret2;
trace_ext4_write_end(inode, pos, len, copied);
if (ext4_test_inode_state(inode, EXT4_STATE_ORDERED_MODE)) {
ret = ext4_jbd2_file_inode(handle, inode);
if (ret) {
unlock_page(page);
page_cache_release(page);
goto errout;
}
}
copied = ext4_generic_write_end(file, mapping, pos, len, copied,
page, fsdata);
if (copied < 0)
ret = copied;
if (pos + len > inode->i_size && ext4_can_truncate(inode))