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ocfs2: fix page zeroing during simple extends 

The page zeroing code was missing the region between old i_size and new
i_size for those extends that didn't actually require a change in space
allocation.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Mark Fasheh 2006-10-03 17:44:42 -07:00
parent 711a40fcaa
commit 0effef776f
1 changed files with 24 additions and 20 deletions
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44
fs/ocfs2/file.c
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@ -728,31 +728,36 @@ static int ocfs2_extend_file(struct inode *inode,
clusters_to_add = ocfs2_clusters_for_bytes(inode->i_sb, new_i_size) -
OCFS2_I(inode)->ip_clusters;
if (clusters_to_add) {
/*
* protect the pages that ocfs2_zero_extend is going to
* be pulling into the page cache.. we do this before the
* metadata extend so that we don't get into the situation
* where we've extended the metadata but can't get the data
* lock to zero.
*/
ret = ocfs2_data_lock(inode, 1);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
/*
* protect the pages that ocfs2_zero_extend is going to be
* pulling into the page cache.. we do this before the
* metadata extend so that we don't get into the situation
* where we've extended the metadata but can't get the data
* lock to zero.
*/
ret = ocfs2_data_lock(inode, 1);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
if (clusters_to_add) {
ret = ocfs2_extend_allocation(inode, clusters_to_add);
if (ret < 0) {
mlog_errno(ret);
goto out_unlock;
}
}
ret = ocfs2_zero_extend(inode, (u64)new_i_size - tail_to_skip);
if (ret < 0) {
mlog_errno(ret);
goto out_unlock;
}
/*
* Call this even if we don't add any clusters to the tree. We
* still need to zero the area between the old i_size and the
* new i_size.
*/
ret = ocfs2_zero_extend(inode, (u64)new_i_size - tail_to_skip);
if (ret < 0) {
mlog_errno(ret);
goto out_unlock;
}
if (!tail_to_skip) {
@ -764,8 +769,7 @@ static int ocfs2_extend_file(struct inode *inode,
}
out_unlock:
if (clusters_to_add) /* this is the only case in which we lock */
ocfs2_data_unlock(inode, 1);
ocfs2_data_unlock(inode, 1);
out:
return ret;