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| author | Jeff Mahoney <jeffm@suse.com> | 2006-02-01 03:06:51 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-01 08:53:26 -0800 |
| commit | fa385bef256077f3b820b241e8f3755ef3905b74 (patch) | |
| tree | 5bf0dee3b1a6bbf001ba912d8463740126be47ee | |
| parent | 6ae1ea447d21c4fecf5df8d0e1022461274fb4e8 (diff) | |
| download | linux-3.10-fa385bef256077f3b820b241e8f3755ef3905b74.tar.gz linux-3.10-fa385bef256077f3b820b241e8f3755ef3905b74.tar.bz2 linux-3.10-fa385bef256077f3b820b241e8f3755ef3905b74.zip | |
[PATCH] reiserfs: reiserfs: check for files > 2GB on 3.5.x disks
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>
| -rw-r--r-- | fs/reiserfs/file.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c index 1cad5d066a5..f3473176c83 100644 --- a/fs/reiserfs/file.c +++ b/fs/reiserfs/file.c @@ -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) |