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| H A D | fts-compat.c | diff 219696 Wed Mar 16 09:00:18 MDT 2011 pjd From fts.c comment: The "FTS_NOSTAT" option can avoid a lot of calls to stat(2) if it knows that a directory could not possibly have subdirectories. This is decided by looking at the link count: a subdirectory would increment its parent's link count by virtue of its own ".." entry. This assumption only holds for UFS-like filesystems that implement links and directories this way, so we must punt for others. It looks like ZFS is a UFS-like file system, as the above also holds for ZFS. Add ZFS to the list of file systems that allow for such optimization. MFC after: 1 month |
| H A D | fts.c | diff 219696 Wed Mar 16 09:00:18 MDT 2011 pjd From fts.c comment: The "FTS_NOSTAT" option can avoid a lot of calls to stat(2) if it knows that a directory could not possibly have subdirectories. This is decided by looking at the link count: a subdirectory would increment its parent's link count by virtue of its own ".." entry. This assumption only holds for UFS-like filesystems that implement links and directories this way, so we must punt for others. It looks like ZFS is a UFS-like file system, as the above also holds for ZFS. Add ZFS to the list of file systems that allow for such optimization. MFC after: 1 month |
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