commit
f2bc9dd07e3424c4ec5f3949961fe053d47bc825
Author: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Date: Wed Jan 20 12:57:53 2010 +0530
Btrfs: Use correct values when updating inode i_size on fallocate
Even though we allocate more, we should be updating inode i_size
as per the arguments passed
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
}
static int prealloc_file_range(struct inode *inode, u64 start, u64 end,
}
static int prealloc_file_range(struct inode *inode, u64 start, u64 end,
- u64 alloc_hint, int mode)
+ u64 alloc_hint, int mode, loff_t actual_len)
{
struct btrfs_trans_handle *trans;
struct btrfs_root *root = BTRFS_I(inode)->root;
{
struct btrfs_trans_handle *trans;
struct btrfs_root *root = BTRFS_I(inode)->root;
u64 cur_offset = start;
u64 num_bytes = end - start;
int ret = 0;
u64 cur_offset = start;
u64 num_bytes = end - start;
int ret = 0;
while (num_bytes > 0) {
alloc_size = min(num_bytes, root->fs_info->max_extent);
while (num_bytes > 0) {
alloc_size = min(num_bytes, root->fs_info->max_extent);
BTRFS_I(inode)->flags |= BTRFS_INODE_PREALLOC;
if (!(mode & FALLOC_FL_KEEP_SIZE) &&
cur_offset > inode->i_size) {
BTRFS_I(inode)->flags |= BTRFS_INODE_PREALLOC;
if (!(mode & FALLOC_FL_KEEP_SIZE) &&
cur_offset > inode->i_size) {
- i_size_write(inode, cur_offset);
- btrfs_ordered_update_i_size(inode, cur_offset, NULL);
+ if (cur_offset > actual_len)
+ i_size = actual_len;
+ else
+ i_size = cur_offset;
+ i_size_write(inode, i_size);
+ btrfs_ordered_update_i_size(inode, i_size, NULL);
}
ret = btrfs_update_inode(trans, root, inode);
}
ret = btrfs_update_inode(trans, root, inode);
!test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
ret = prealloc_file_range(inode,
cur_offset, last_byte,
!test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
ret = prealloc_file_range(inode,
cur_offset, last_byte,
+ alloc_hint, mode, offset+len);
if (ret < 0) {
free_extent_map(em);
break;
if (ret < 0) {
free_extent_map(em);
break;