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ocfs2: take meta data lock in ocfs2_file_aio_read()

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Temporarily take the meta data lock in ocfs2_file_aio_read() to allow us to
update our inode fields.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Mark Fasheh 2006-05-05 19:04:35 -07:00
parent 53013cba41
commit c4374f8a60
1 changed files with 16 additions and 0 deletions
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16
fs/ocfs2/file.c
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@ -1168,6 +1168,22 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
ocfs2_iocb_set_rw_locked(iocb);
}
/*
* We're fine letting folks race truncates and extending
* writes with read across the cluster, just like they can
* locally. Hence no rw_lock during read.
*
* Take and drop the meta data lock to update inode fields
* like i_size. This allows the checks down below
* generic_file_aio_read() a chance of actually working.
*/
ret = ocfs2_meta_lock(inode, NULL, NULL, 0);
if (ret < 0) {
mlog_errno(ret);
goto bail;
}
ocfs2_meta_unlock(inode, 0);
ret = generic_file_aio_read(iocb, buf, count, iocb->ki_pos);
if (ret == -EINVAL)
mlog(ML_ERROR, "generic_file_aio_read returned -EINVAL\n");