2014-02-03, OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>:
>
> Sorry for long delay.
>
> Namjae Jeon <linkinjeon@xxxxxxxxx> writes:
>
>> + if (mode & FALLOC_FL_KEEP_SIZE) {
>> + /* First compute the number of clusters to be allocated */
>> + mm_bytes = offset + len - round_up(MSDOS_I(inode)->mmu_private,
>> + sbi->cluster_size);
>
Hi OGAWA.
> This should use ->i_disksize?
Right, I will fix it.
>
> [...]
>
>> + /* Release unwritten fallocated blocks on inode eviction. */
>> + if (MSDOS_I(inode)->mmu_private < MSDOS_I(inode)->i_disksize) {
>> + int err;
>> + fat_truncate_blocks(inode, MSDOS_I(inode)->mmu_private);
>> + /* Fallocate results in updating the i_start/iogstart
>> + * for the zero byte file. So, make it return to
>> + * original state during evict and commit it
>> + * synchrnously to avoid any corruption on the next
>> + * access to the cluster chain for the file.
>> + */
>> + err = fat_sync_inode(inode);
>
> Ah, good catch. We have to update i_size. I was forgetting about this.
> Well, sync inode unconditionally would not be good. Maybe, we better to
> use __fat_write_inode() with inode_needs_sync() or such.
Okay, I will change it.
Thanks.
> --
> OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>
>
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