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 @@ -727,10 +727,16 @@ 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; } @@ -4081,7 +4087,8 @@ 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]);