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authorZheng Liu <wenqing.lz@taobao.com>2013-04-03 12:41:17 -0400
committerTheodore Ts'o <tytso@mit.edu>2013-04-03 12:41:17 -0400
commiteed4333f087b45e325d5b9ab29665d82ae9cab88 (patch)
tree55ff1f894d7e0fd9b4f154d3a93e0391c39560ad
parent74d553aad7926ed05e05d9d5cff516a7b31375fc (diff)
downloadlinux-eed4333f087b45e325d5b9ab29665d82ae9cab88.tar.bz2
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>
-rw-r--r--fs/ext4/inode.c67
1 files changed, 27 insertions, 40 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 4ee69270a48a..a4ffb470fbf3 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -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))