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ocfs2: zero tail of sparse files on truncate

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Since we don't zero on extend anymore, truncate needs to be fixed up to zero
the part of a file between i_size and and end of it's cluster. Otherwise a
subsequent extend could expose bad data.

This introduced a new helper, which can be used in ocfs2_write().

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Mark Fasheh
2007-02-16 11:46:50 -08:00
parent 25baf2da14
commit 60b11392f1
7 changed files with 328 additions and 25 deletions
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2
fs/ocfs2/alloc.h
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@ -71,6 +71,8 @@ struct ocfs2_truncate_context {
struct buffer_head *tc_last_eb_bh;
};
int ocfs2_zero_tail_for_truncate(struct inode *inode, handle_t *handle,
u64 new_i_size);
int ocfs2_prepare_truncate(struct ocfs2_super *osb,
struct inode *inode,
struct buffer_head *fe_bh,