Re: [PATCH] ext2 largefile fixes + [f]truncate() error value fix

[Alexander Viro]

On Sat, 18 Nov 2000, Andrea Arcangeli wrote:

[2.2 variant]

RLIMIT_FSIZE stuff - vmtruncate().
size < 0 - caller.
size > ... - ext2_notify_change().
>               if (size >> 33) {
                       ITYM 32 
>                       struct super_block *sb = inode->i_sb;
>                       struct ext2_super_block *es = sb->u.ext2_sb.s_es;
>                       if (!(es->s_feature_ro_compat &
>                             cpu_to_le32(EXT2_FEATURE_RO_COMPAT_LARGE_FILE))){
>                               /* If this is the first large file
>                                * created, add a flag to the superblock */
>                               es->s_feature_ro_compat |=
>                               cpu_to_le32(EXT2_FEATURE_RO_COMPAT_LARGE_FILE);
>                               mark_buffer_dirty(sb->u.ext2_sb.s_sbh, 1);
>                       }
>               }
 
... and that one - in ext2_update_inode().

> and btw the large file feature setting seems missing also from write(2) ext2
> in 2.4.x, confirm?

NAK. You do such write(), you end up doing ext2_update_inode().

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