When an error occurs in reiserfs_file_write before any data is written, and
O_SYNC is set, the return code of generic_osync_write will overwrite the
error code, losing it.
This patch ensures that generic_osync_inode() doesn't run under an error
condition, losing the error. This duplicates the logic from
generic_file_buffered_write().
Signed-off-by: Jeff Mahoney <[email protected]>
diff -ruNpX dontdiff linux-2.6.15/fs/reiserfs/file.c linux-2.6.15.reiserfs/fs/reiserfs/file.c
--- linux-2.6.15/fs/reiserfs/file.c 2006-03-02 12:10:04.000000000 -0500
+++ linux-2.6.15.reiserfs/fs/reiserfs/file.c 2006-03-02 16:08:49.000000000 -0500
@@ -1563,10 +1563,10 @@ static ssize_t reiserfs_file_write(struc
}
}
- if ((file->f_flags & O_SYNC) || IS_SYNC(inode))
- res =
- generic_osync_inode(inode, file->f_mapping,
- OSYNC_METADATA | OSYNC_DATA);
+ if (likely(res >= 0) &&
+ (unlikely((file->f_flags & O_SYNC) || IS_SYNC(inode))))
+ res = generic_osync_inode(inode, file->f_mapping,
+ OSYNC_METADATA | OSYNC_DATA);
mutex_unlock(&inode->i_mutex);
reiserfs_async_progress_wait(inode->i_sb);
--
Jeff Mahoney
SuSE Labs
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