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ext4: factor out write end code of inline file

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Now that the inline_data file write end procedure are falled into the
common write end functions, it is not clear. Factor them out and do
some cleanup. This patch also drop ext4_da_write_inline_data_end()
and switch to use ext4_write_inline_data_end() instead because we also
need to do the same error processing if we failed to write data into
inline entry.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Link: https://lore.kernel.org/r/20210716122024.1105856-4-yi.zhang@huawei.com
This commit is contained in:
Zhang Yi
2021-07-16 20:20:23 +08:00
committed by Theodore Ts'o
parent 55ce2f649b
commit 6984aef598
3 changed files with 85 additions and 110 deletions
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73
fs/ext4/inode.c
View File

@@ -1282,23 +1282,14 @@ static int ext4_write_end(struct file *file,
loff_t old_size = inode->i_size;
int ret = 0, ret2;
int i_size_changed = 0;
int inline_data = ext4_has_inline_data(inode);
bool verity = ext4_verity_in_progress(inode);
trace_ext4_write_end(inode, pos, len, copied);
if (inline_data) {
ret = ext4_write_inline_data_end(inode, pos, len,
copied, page);
if (ret < 0) {
unlock_page(page);
put_page(page);
goto errout;
}
copied = ret;
ret = 0;
} else
copied = block_write_end(file, mapping, pos,
len, copied, page, fsdata);
if (ext4_has_inline_data(inode))
return ext4_write_inline_data_end(inode, pos, len, copied, page);
copied = block_write_end(file, mapping, pos, len, copied, page, fsdata);
/*
* it's important to update i_size while still holding page lock:
* page writeout could otherwise come in and zero beyond i_size.
@@ -1319,10 +1310,9 @@ static int ext4_write_end(struct file *file,
* ordering of page lock and transaction start for journaling
* filesystems.
*/
if (i_size_changed || inline_data)
if (i_size_changed)
ret = ext4_mark_inode_dirty(handle, inode);
errout:
if (pos + len > inode->i_size && !verity && ext4_can_truncate(inode))
/* if we have allocated more blocks and copied
* less. We will have blocks allocated outside
@@ -1394,7 +1384,6 @@ static int ext4_journalled_write_end(struct file *file,
int partial = 0;
unsigned from, to;
int size_changed = 0;
int inline_data = ext4_has_inline_data(inode);
bool verity = ext4_verity_in_progress(inode);
trace_ext4_journalled_write_end(inode, pos, len, copied);
@@ -1403,17 +1392,10 @@ static int ext4_journalled_write_end(struct file *file,
BUG_ON(!ext4_handle_valid(handle));
if (inline_data) {
ret = ext4_write_inline_data_end(inode, pos, len,
copied, page);
if (ret < 0) {
unlock_page(page);
put_page(page);
goto errout;
}
copied = ret;
ret = 0;
} else if (unlikely(copied < len) && !PageUptodate(page)) {
if (ext4_has_inline_data(inode))
return ext4_write_inline_data_end(inode, pos, len, copied, page);
if (unlikely(copied < len) && !PageUptodate(page)) {
copied = 0;
ext4_journalled_zero_new_buffers(handle, page, from, to);
} else {
@@ -1436,13 +1418,12 @@ static int ext4_journalled_write_end(struct file *file,
if (old_size < pos && !verity)
pagecache_isize_extended(inode, old_size, pos);
if (size_changed || inline_data) {
if (size_changed) {
ret2 = ext4_mark_inode_dirty(handle, inode);
if (!ret)
ret = ret2;
}
errout:
if (pos + len > inode->i_size && !verity && ext4_can_truncate(inode))
/* if we have allocated more blocks and copied
* less. We will have blocks allocated outside
@@ -3072,7 +3053,7 @@ static int ext4_da_write_end(struct file *file,
struct page *page, void *fsdata)
{
struct inode *inode = mapping->host;
int ret = 0, ret2;
int ret;
handle_t *handle = ext4_journal_current_handle();
loff_t new_i_size;
unsigned long start, end;
@@ -3083,6 +3064,12 @@ static int ext4_da_write_end(struct file *file,
len, copied, page, fsdata);
trace_ext4_da_write_end(inode, pos, len, copied);
if (write_mode != CONVERT_INLINE_DATA &&
ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA) &&
ext4_has_inline_data(inode))
return ext4_write_inline_data_end(inode, pos, len, copied, page);
start = pos & (PAGE_SIZE - 1);
end = start + copied - 1;
@@ -3102,26 +3089,12 @@ static int ext4_da_write_end(struct file *file,
* ext4_da_write_inline_data_end().
*/
new_i_size = pos + copied;
if (copied && new_i_size > inode->i_size) {
if (ext4_has_inline_data(inode) ||
ext4_da_should_update_i_disksize(page, end))
ext4_update_i_disksize(inode, new_i_size);
}
if (write_mode != CONVERT_INLINE_DATA &&
ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA) &&
ext4_has_inline_data(inode))
ret = ext4_da_write_inline_data_end(inode, pos, len, copied,
page);
else
ret = generic_write_end(file, mapping, pos, len, copied,
page, fsdata);
copied = ret;
ret2 = ext4_journal_stop(handle);
if (unlikely(ret2 && !ret))
ret = ret2;
if (copied && new_i_size > inode->i_size &&
ext4_da_should_update_i_disksize(page, end))
ext4_update_i_disksize(inode, new_i_size);
copied = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
ret = ext4_journal_stop(handle);
return ret ? ret : copied;
}