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[PATCH] reiserfs: reiserfs: check for files > 2GB on 3.5.x disks

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When a filesystem has been converted from 3.5.x to 3.6.x, we need an extra
check during file write to make sure we are not trying to make a 3.5.x file
> 2GB.

Signed-off-by: Chris Mason <mason@suse.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeff Mahoney 2006-02-01 03:06:51 -08:00 committed by Linus Torvalds
parent 6ae1ea447d
commit fa385bef25
1 changed files with 17 additions and 0 deletions
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17
fs/reiserfs/file.c
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@ -1287,6 +1287,23 @@ static ssize_t reiserfs_file_write(struct file *file, /* the file we are going t
struct reiserfs_transaction_handle th;
th.t_trans_id = 0;
/* If a filesystem is converted from 3.5 to 3.6, we'll have v3.5 items
* lying around (most of the disk, in fact). Despite the filesystem
* now being a v3.6 format, the old items still can't support large
* file sizes. Catch this case here, as the rest of the VFS layer is
* oblivious to the different limitations between old and new items.
* reiserfs_setattr catches this for truncates. This chunk is lifted
* from generic_write_checks. */
if (get_inode_item_key_version (inode) == KEY_FORMAT_3_5 &&
*ppos + count > MAX_NON_LFS) {
if (*ppos >= MAX_NON_LFS) {
send_sig(SIGXFSZ, current, 0);
return -EFBIG;
}
if (count > MAX_NON_LFS - (unsigned long)*ppos)
count = MAX_NON_LFS - (unsigned long)*ppos;
}
if (file->f_flags & O_DIRECT) { // Direct IO needs treatment
ssize_t result, after_file_end = 0;
if ((*ppos + count >= inode->i_size)