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Diffstat (limited to 'fs/ocfs2/aops.c')
-rw-r--r--fs/ocfs2/aops.c42
1 files changed, 28 insertions, 14 deletions
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 9a5c931439b..742893ea739 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -196,15 +196,14 @@ int ocfs2_get_block(struct inode *inode, sector_t iblock,
dump_stack();
goto bail;
}
-
- past_eof = ocfs2_blocks_for_bytes(inode->i_sb, i_size_read(inode));
- mlog(0, "Inode %lu, past_eof = %llu\n", inode->i_ino,
- (unsigned long long)past_eof);
-
- if (create && (iblock >= past_eof))
- set_buffer_new(bh_result);
}
+ past_eof = ocfs2_blocks_for_bytes(inode->i_sb, i_size_read(inode));
+ mlog(0, "Inode %lu, past_eof = %llu\n", inode->i_ino,
+ (unsigned long long)past_eof);
+ if (create && (iblock >= past_eof))
+ set_buffer_new(bh_result);
+
bail:
if (err < 0)
err = -EIO;
@@ -1590,21 +1589,20 @@ out:
* write path can treat it as an non-allocating write, which has no
* special case code for sparse/nonsparse files.
*/
-static int ocfs2_expand_nonsparse_inode(struct inode *inode, loff_t pos,
- unsigned len,
+static int ocfs2_expand_nonsparse_inode(struct inode *inode,
+ struct buffer_head *di_bh,
+ loff_t pos, unsigned len,
struct ocfs2_write_ctxt *wc)
{
int ret;
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
loff_t newsize = pos + len;
- if (ocfs2_sparse_alloc(osb))
- return 0;
+ BUG_ON(ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb)));
if (newsize <= i_size_read(inode))
return 0;
- ret = ocfs2_extend_no_holes(inode, newsize, pos);
+ ret = ocfs2_extend_no_holes(inode, di_bh, newsize, pos);
if (ret)
mlog_errno(ret);
@@ -1614,6 +1612,18 @@ static int ocfs2_expand_nonsparse_inode(struct inode *inode, loff_t pos,
return ret;
}
+static int ocfs2_zero_tail(struct inode *inode, struct buffer_head *di_bh,
+ loff_t pos)
+{
+ int ret = 0;
+
+ BUG_ON(!ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb)));
+ if (pos > i_size_read(inode))
+ ret = ocfs2_zero_extend(inode, di_bh, pos);
+
+ return ret;
+}
+
int ocfs2_write_begin_nolock(struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata,
@@ -1649,7 +1659,11 @@ int ocfs2_write_begin_nolock(struct address_space *mapping,
}
}
- ret = ocfs2_expand_nonsparse_inode(inode, pos, len, wc);
+ if (ocfs2_sparse_alloc(osb))
+ ret = ocfs2_zero_tail(inode, di_bh, pos);
+ else
+ ret = ocfs2_expand_nonsparse_inode(inode, di_bh, pos, len,
+ wc);
if (ret) {
mlog_errno(ret);
goto out;