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ext4: remove unused code from ext4_remove_blocks()

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The "head removal" branch in the condition is never used in any code
path in ext4 since the function only caller ext4_ext_rm_leaf() will make
sure that the extent is properly split before removing blocks. Note that
there is a bug in this branch anyway.

This commit removes the unused code completely and makes use of
ext4_error() instead of printk if dubious range is provided.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Lukas Czerner 2013-05-27 23:32:35 -04:00 committed by Theodore Ts'o
parent c121ffd013
commit 78fb9cdf03
1 changed files with 4 additions and 17 deletions
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21
fs/ext4/extents.c
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@ -2432,23 +2432,10 @@ static int ext4_remove_blocks(handle_t *handle, struct inode *inode,
*partial_cluster = EXT4_B2C(sbi, pblk);
else
*partial_cluster = 0;
} else if (from == le32_to_cpu(ex->ee_block)
&& to <= le32_to_cpu(ex->ee_block) + ee_len - 1) {
/* head removal */
ext4_lblk_t num;
ext4_fsblk_t start;
num = to - from;
start = ext4_ext_pblock(ex);
ext_debug("free first %u blocks starting %llu\n", num, start);
ext4_free_blocks(handle, inode, NULL, start, num, flags);
} else {
printk(KERN_INFO "strange request: removal(2) "
"%u-%u from %u:%u\n",
from, to, le32_to_cpu(ex->ee_block), ee_len);
}
} else
ext4_error(sbi->s_sb, "strange request: removal(2) "
"%u-%u from %u:%u\n",
from, to, le32_to_cpu(ex->ee_block), ee_len);
return 0;
}