1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Copyright (C) 2017-2023 Oracle.  All Rights Reserved.
7 #define __XFS_SCRUB_SCRUB_H__
18 #define XCHK_RELAX_NEXT		(jiffies + (HZ / 10))
20 #define INIT_XCHK_RELAX	\
31  * then so that we don't run afoul of the soft lockup watchdog or RCU stall
39 	if (likely(++widget->resched_nr < 100))  in xchk_maybe_relax()
41 	widget->resched_nr = 0;  in xchk_maybe_relax()
43 	if (unlikely(widget->next_resched <= jiffies)) {  in xchk_maybe_relax()
45 		widget->next_resched = XCHK_RELAX_NEXT;  in xchk_maybe_relax()
48 	if (widget->interruptible && fatal_signal_pending(current))  in xchk_maybe_relax()
49 		return -EINTR;  in xchk_maybe_relax()
57  * to back out gracefully if there isn't enough memory.  Force-cast to avoid
60 #define XCHK_GFP_FLAGS	((__force gfp_t)(GFP_KERNEL | __GFP_NOWARN | \
65  * or the allocation state; therefore, perform an untrusted lookup.  We don't
68 #define XCHK_IGET_FLAGS	(XFS_IGET_UNTRUSTED | XFS_IGET_DONTCACHE)
73 	ST_PERAG,	/* per-AG metadata */
74 	ST_FS,		/* per-FS metadata */
75 	ST_INODE,	/* per-inode metadata */
87 	/* Repair or optimize the metadata. */
91 	 * Re-scrub the metadata we repaired, in case there's extra work that
93 	 * the ->scrub function pointer, assuming that the regular scrub is
147 	 * the file that scrub was called with if we're checking file-based fs
148 	 * metadata (e.g. rt bitmaps) or if we're doing a scrub-by-handle for
167 	/* buffer target for in-memory btrees; also freed at teardown. */
186 	 * or repaired.  We will use this mask to update the in-core fs health
200 	/* State tracking for single-AG operations. */
208 #define XCHK_TRY_HARDER		(1U << 0)  /* can't get resources, try again */
209 #define XCHK_HAVE_FREEZE_PROT	(1U << 1)  /* do we have freeze protection? */
210 #define XCHK_FSGATES_DRAIN	(1U << 2)  /* defer ops draining enabled */
211 #define XCHK_NEED_DRAIN		(1U << 3)  /* scrub needs to drain defer ops */
212 #define XCHK_FSGATES_QUOTA	(1U << 4)  /* quota live update enabled */
213 #define XCHK_FSGATES_DIRENTS	(1U << 5)  /* directory live update enabled */
214 #define XCHK_FSGATES_RMAP	(1U << 6)  /* rmapbt live update enabled */
215 #define XREP_RESET_PERAG_RESV	(1U << 30) /* must reset AG space reservation */
216 #define XREP_ALREADY_FIXED	(1U << 31) /* checking our repair work */
224 #define XCHK_FSGATES_ALL	(XCHK_FSGATES_DRAIN | \
250 	if (xchk_maybe_relax(&sc->relax)) {  in xchk_should_terminate()
252 			*error = -EINTR;  in xchk_should_terminate()
260 	return -ENOENT;  in xchk_nothing()
290 # define xchk_rtbitmap		xchk_nothing
291 # define xchk_rtsummary		xchk_nothing
292 # define xchk_rgsuperblock	xchk_nothing
293 # define xchk_rtrmapbt		xchk_nothing
294 # define xchk_rtrefcountbt	xchk_nothing
300 # define xchk_quota		xchk_nothing
301 # define xchk_quotacheck	xchk_nothing
306 /* cross-referencing helpers */
308 		xfs_extlen_t len);
310 		xfs_extlen_t len);
312 		xfs_extlen_t len);
314 		xfs_extlen_t len, const struct xfs_owner_info *oinfo);
316 		xfs_extlen_t len, const struct xfs_owner_info *oinfo);
318 		xfs_extlen_t len);
320 		xfs_extlen_t len);
322 		xfs_extlen_t len);
324 		xfs_extlen_t len);
327 		xfs_extlen_t len);
329 		xfs_extlen_t len);
331 		xfs_extlen_t len);
333 		xfs_extlen_t len, const struct xfs_owner_info *oinfo);
335 		xfs_extlen_t len);
337 		xfs_extlen_t len);
339 		xfs_extlen_t len);
341 # define xchk_xref_is_used_rt_space(sc, rtbno, len) do { } while (0)  argument
342 # define xchk_xref_has_no_rt_owner(sc, rtbno, len) do { } while (0)  argument
343 # define xchk_xref_has_rt_owner(sc, rtbno, len) do { } while (0)  argument
344 # define xchk_xref_is_only_rt_owned_by(sc, bno, len, oinfo) do { } while (0)  argument
345 # define xchk_xref_is_rt_cow_staging(sc, bno, len) do { } while (0)  argument
346 # define xchk_xref_is_not_rt_shared(sc, bno, len) do { } while (0)  argument
347 # define xchk_xref_is_not_rt_cow_staging(sc, bno, len) do { } while (0)  argument