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ext4: Don't add the inode to journal handle until after the block is allocated 

Make sure we don't add the inode to the journal handle until after the
block allocation, so that a journal commit will not include the inode in
case of block allocation failure.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Aneesh Kumar K.V 2008-09-08 23:08:40 -04:00 committed by Theodore Ts'o
parent 68629f29c6
commit 166348dd37
2 changed files with 16 additions and 22 deletions
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2
fs/ext4/balloc.c
View File

@ -2063,7 +2063,7 @@ ext4_fsblk_t ext4_new_meta_blocks(handle_t *handle, struct inode *inode,
/*
* Account for the allocated meta blocks
*/
if (!(*errp)) {
if (!(*errp) && EXT4_I(inode)->i_delalloc_reserved_flag) {
spin_lock(&EXT4_I(inode)->i_block_reservation_lock);
EXT4_I(inode)->i_allocated_meta_blocks += *count;
spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);

36
fs/ext4/inode.c
View File

@ -2170,18 +2170,24 @@ static int ext4_da_get_block_write(struct inode *inode, sector_t iblock,
handle_t *handle = NULL;
handle = ext4_journal_current_handle();
if (!handle) {
ret = ext4_get_blocks_wrap(handle, inode, iblock, max_blocks,
bh_result, 0, 0, 0);
BUG_ON(!ret);
} else {
ret = ext4_get_blocks_wrap(handle, inode, iblock, max_blocks,
bh_result, create, 0, EXT4_DELALLOC_RSVED);
}
BUG_ON(!handle);
ret = ext4_get_blocks_wrap(handle, inode, iblock, max_blocks,
bh_result, create, 0, EXT4_DELALLOC_RSVED);
if (ret > 0) {
bh_result->b_size = (ret << inode->i_blkbits);
if (ext4_should_order_data(inode)) {
int retval;
retval = ext4_jbd2_file_inode(handle, inode);
if (retval)
/*
* Failed to add inode for ordered
* mode. Don't update file size
*/
return retval;
}
/*
* Update on-disk size along with block allocation
* we don't use 'extend_disksize' as size may change
@ -2407,18 +2413,6 @@ static int ext4_da_writepages(struct address_space *mapping,
dump_stack();
goto out_writepages;
}
if (ext4_should_order_data(inode)) {
/*
* With ordered mode we need to add
* the inode to the journal handl
* when we do block allocation.
*/
ret = ext4_jbd2_file_inode(handle, inode);
if (ret) {
ext4_journal_stop(handle);
goto out_writepages;
}
}
to_write -= wbc->nr_to_write;
ret = mpage_da_writepages(mapping, wbc,