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Subject[PATCH 5.2 60/66] ext4: use jbd2_inode dirty range scoping
Date
From: Ross Zwisler <zwisler@chromium.org>

commit 73131fbb003b3691cfcf9656f234b00da497fcd6 upstream.

Use the newly introduced jbd2_inode dirty range scoping to prevent us
from waiting forever when trying to complete a journal transaction.

Signed-off-by: Ross Zwisler <zwisler@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
fs/ext4/ext4_jbd2.h | 12 ++++++------
fs/ext4/inode.c | 13 ++++++++++---
fs/ext4/move_extent.c | 3 ++-
3 files changed, 18 insertions(+), 10 deletions(-)

--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -361,20 +361,20 @@ static inline int ext4_journal_force_com
}

static inline int ext4_jbd2_inode_add_write(handle_t *handle,
- struct inode *inode)
+ struct inode *inode, loff_t start_byte, loff_t length)
{
if (ext4_handle_valid(handle))
- return jbd2_journal_inode_add_write(handle,
- EXT4_I(inode)->jinode);
+ return jbd2_journal_inode_ranged_write(handle,
+ EXT4_I(inode)->jinode, start_byte, length);
return 0;
}

static inline int ext4_jbd2_inode_add_wait(handle_t *handle,
- struct inode *inode)
+ struct inode *inode, loff_t start_byte, loff_t length)
{
if (ext4_handle_valid(handle))
- return jbd2_journal_inode_add_wait(handle,
- EXT4_I(inode)->jinode);
+ return jbd2_journal_inode_ranged_wait(handle,
+ EXT4_I(inode)->jinode, start_byte, length);
return 0;
}

--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -731,10 +731,16 @@ out_sem:
!(flags & EXT4_GET_BLOCKS_ZERO) &&
!ext4_is_quota_file(inode) &&
ext4_should_order_data(inode)) {
+ loff_t start_byte =
+ (loff_t)map->m_lblk << inode->i_blkbits;
+ loff_t length = (loff_t)map->m_len << inode->i_blkbits;
+
if (flags & EXT4_GET_BLOCKS_IO_SUBMIT)
- ret = ext4_jbd2_inode_add_wait(handle, inode);
+ ret = ext4_jbd2_inode_add_wait(handle, inode,
+ start_byte, length);
else
- ret = ext4_jbd2_inode_add_write(handle, inode);
+ ret = ext4_jbd2_inode_add_write(handle, inode,
+ start_byte, length);
if (ret)
return ret;
}
@@ -4085,7 +4091,8 @@ static int __ext4_block_zero_page_range(
err = 0;
mark_buffer_dirty(bh);
if (ext4_should_order_data(inode))
- err = ext4_jbd2_inode_add_write(handle, inode);
+ err = ext4_jbd2_inode_add_write(handle, inode, from,
+ length);
}

unlock:
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -390,7 +390,8 @@ data_copy:

/* Even in case of data=writeback it is reasonable to pin
* inode to transaction, to prevent unexpected data loss */
- *err = ext4_jbd2_inode_add_write(handle, orig_inode);
+ *err = ext4_jbd2_inode_add_write(handle, orig_inode,
+ (loff_t)orig_page_offset << PAGE_SHIFT, replaced_size);

unlock_pages:
unlock_page(pagep[0]);

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