Bug fixes for 6.10-rc2:

* Fix a livelock by dropping an xfarray sortinfo folio when an error is
    encountered.
  * During extended attribute operations, Initialize transaction reservation
    computation based on attribute operation code.
  * Relax symbolic link's ondisk verification code to allow symbolic links
    with short remote targets.
  * Prevent soft lockups when unmapping file ranges and also during remapping
    blocks during a reflink operation.
  * Fix compilation warnings when XFS is built with W=1 option.
 
 Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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Merge tag 'xfs-6.10-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs fixes from Chandan Babu:

 - Fix a livelock by dropping an xfarray sortinfo folio when an error
   is encountered

 - During extended attribute operations, Initialize transaction
   reservation computation based on attribute operation code

 - Relax symbolic link's ondisk verification code to allow symbolic
   links with short remote targets

 - Prevent soft lockups when unmapping file ranges and also during
   remapping blocks during a reflink operation

 - Fix compilation warnings when XFS is built with W=1 option

* tag 'xfs-6.10-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: Add cond_resched to block unmap range and reflink remap path
  xfs: don't open-code u64_to_user_ptr
  xfs: allow symlinks with short remote targets
  xfs: fix xfs_init_attr_trans not handling explicit operation codes
  xfs: drop xfarray sortinfo folio on error
  xfs: Stop using __maybe_unused in xfs_alloc.c
  xfs: Clear W=1 warning in xfs_iwalk_run_callbacks()

fs/xfs/libxfs/xfs_alloc.c

@@ -1008,13 +1008,12 @@ xfs_alloc_cur_finish(
 	struct xfs_alloc_arg	*args,
 	struct xfs_alloc_cur	*acur)
 {
-	struct xfs_agf __maybe_unused *agf = args->agbp->b_addr;
 	int			error;
 
 	ASSERT(acur->cnt && acur->bnolt);
 	ASSERT(acur->bno >= acur->rec_bno);
 	ASSERT(acur->bno + acur->len <= acur->rec_bno + acur->rec_len);
-	ASSERT(acur->rec_bno + acur->rec_len <= be32_to_cpu(agf->agf_length));
+	ASSERT(xfs_verify_agbext(args->pag, acur->rec_bno, acur->rec_len));
 
 	error = xfs_alloc_fixup_trees(acur->cnt, acur->bnolt, acur->rec_bno,
 				      acur->rec_len, acur->bno, acur->len, 0);
@@ -1217,7 +1216,6 @@ STATIC int			/* error */
 xfs_alloc_ag_vextent_exact(
 	xfs_alloc_arg_t	*args)	/* allocation argument structure */
 {
-	struct xfs_agf __maybe_unused *agf = args->agbp->b_addr;
 	struct xfs_btree_cur *bno_cur;/* by block-number btree cursor */
 	struct xfs_btree_cur *cnt_cur;/* by count btree cursor */
 	int		error;
@@ -1297,7 +1295,7 @@ xfs_alloc_ag_vextent_exact(
 	 */
 	cnt_cur = xfs_cntbt_init_cursor(args->mp, args->tp, args->agbp,
 					args->pag);
-	ASSERT(args->agbno + args->len <= be32_to_cpu(agf->agf_length));
+	ASSERT(xfs_verify_agbext(args->pag, args->agbno, args->len));
 	error = xfs_alloc_fixup_trees(cnt_cur, bno_cur, fbno, flen, args->agbno,
 				      args->len, XFSA_FIXUP_BNO_OK);
 	if (error) {

fs/xfs/libxfs/xfs_attr.c

@@ -329,26 +329,20 @@ xfs_attr_calc_size(
 	return nblks;
 }
 
-/* Initialize transaction reservation for attr operations */
-void
-xfs_init_attr_trans(
-	struct xfs_da_args	*args,
-	struct xfs_trans_res	*tres,
-	unsigned int		*total)
+/* Initialize transaction reservation for an xattr set/replace/upsert */
+inline struct xfs_trans_res
+xfs_attr_set_resv(
+	const struct xfs_da_args	*args)
 {
-	struct xfs_mount	*mp = args->dp->i_mount;
+	struct xfs_mount		*mp = args->dp->i_mount;
+	struct xfs_trans_res		ret = {
+		.tr_logres = M_RES(mp)->tr_attrsetm.tr_logres +
+			    M_RES(mp)->tr_attrsetrt.tr_logres * args->total,
+		.tr_logcount		= XFS_ATTRSET_LOG_COUNT,
+		.tr_logflags		= XFS_TRANS_PERM_LOG_RES,
+	};
 
-	if (args->value) {
-		tres->tr_logres = M_RES(mp)->tr_attrsetm.tr_logres +
-				 M_RES(mp)->tr_attrsetrt.tr_logres *
-				 args->total;
-		tres->tr_logcount = XFS_ATTRSET_LOG_COUNT;
-		tres->tr_logflags = XFS_TRANS_PERM_LOG_RES;
-		*total = args->total;
-	} else {
-		*tres = M_RES(mp)->tr_attrrm;
-		*total = XFS_ATTRRM_SPACE_RES(mp);
-	}
+	return ret;
 }
 
 /*
@@ -1006,7 +1000,7 @@ xfs_attr_set(
 	struct xfs_trans_res	tres;
 	int			error, local;
 	int			rmt_blks = 0;
-	unsigned int		total;
+	unsigned int		total = 0;
 
 	ASSERT(!args->trans);
 
@@ -1033,10 +1027,15 @@ xfs_attr_set(
 
 		if (!local)
 			rmt_blks = xfs_attr3_rmt_blocks(mp, args->valuelen);
+
+		tres = xfs_attr_set_resv(args);
+		total = args->total;
 		break;
 	case XFS_ATTRUPDATE_REMOVE:
 		XFS_STATS_INC(mp, xs_attr_remove);
 		rmt_blks = xfs_attr3_max_rmt_blocks(mp);
+		tres = M_RES(mp)->tr_attrrm;
+		total = XFS_ATTRRM_SPACE_RES(mp);
 		break;
 	}
 
@@ -1044,7 +1043,6 @@ xfs_attr_set(
 	 * Root fork attributes can use reserved data blocks for this
 	 * operation if necessary
 	 */
-	xfs_init_attr_trans(args, &tres, &total);
 	error = xfs_trans_alloc_inode(dp, &tres, total, 0, rsvd, &args->trans);
 	if (error)
 		return error;

fs/xfs/libxfs/xfs_attr.h

@@ -565,8 +565,7 @@ bool xfs_attr_check_namespace(unsigned int attr_flags);
 bool xfs_attr_namecheck(unsigned int attr_flags, const void *name,
 		size_t length);
 int xfs_attr_calc_size(struct xfs_da_args *args, int *local);
-void xfs_init_attr_trans(struct xfs_da_args *args, struct xfs_trans_res *tres,
-			 unsigned int *total);
+struct xfs_trans_res xfs_attr_set_resv(const struct xfs_da_args *args);
 
 /*
  * Check to see if the attr should be upgraded from non-existent or shortform to

fs/xfs/libxfs/xfs_bmap.c

@@ -6383,6 +6383,7 @@ xfs_bunmapi_range(
 		error = xfs_defer_finish(tpp);
 		if (error)
 			goto out;
+		cond_resched();
 	}
 out:
 	return error;

fs/xfs/libxfs/xfs_inode_buf.c

@@ -374,17 +374,37 @@ xfs_dinode_verify_fork(
 	/*
 	 * For fork types that can contain local data, check that the fork
 	 * format matches the size of local data contained within the fork.
-	 *
-	 * For all types, check that when the size says the should be in extent
-	 * or btree format, the inode isn't claiming it is in local format.
 	 */
 	if (whichfork == XFS_DATA_FORK) {
-		if (S_ISDIR(mode) || S_ISLNK(mode)) {
+		/*
+		 * A directory small enough to fit in the inode must be stored
+		 * in local format.  The directory sf <-> extents conversion
+		 * code updates the directory size accordingly.
+		 */
+		if (S_ISDIR(mode)) {
 			if (be64_to_cpu(dip->di_size) <= fork_size &&
 			    fork_format != XFS_DINODE_FMT_LOCAL)
 				return __this_address;
 		}
 
+		/*
+		 * A symlink with a target small enough to fit in the inode can
+		 * be stored in extents format if xattrs were added (thus
+		 * converting the data fork from shortform to remote format)
+		 * and then removed.
+		 */
+		if (S_ISLNK(mode)) {
+			if (be64_to_cpu(dip->di_size) <= fork_size &&
+			    fork_format != XFS_DINODE_FMT_EXTENTS &&
+			    fork_format != XFS_DINODE_FMT_LOCAL)
+				return __this_address;
+		}
+
+		/*
+		 * For all types, check that when the size says the fork should
+		 * be in extent or btree format, the inode isn't claiming to be
+		 * in local format.
+		 */
 		if (be64_to_cpu(dip->di_size) > fork_size &&
 		    fork_format == XFS_DINODE_FMT_LOCAL)
 			return __this_address;

fs/xfs/scrub/scrub.c

@@ -856,7 +856,7 @@ xfs_ioc_scrubv_metadata(
 	if (vec_bytes > PAGE_SIZE)
 		return -ENOMEM;
 
-	uvectors = (void __user *)(uintptr_t)head.svh_vectors;
+	uvectors = u64_to_user_ptr(head.svh_vectors);
 	vectors = memdup_user(uvectors, vec_bytes);
 	if (IS_ERR(vectors))
 		return PTR_ERR(vectors);

fs/xfs/scrub/xfarray.c

@@ -822,12 +822,14 @@ xfarray_sort_scan(
 
 	/* Grab the first folio that backs this array element. */
 	if (!si->folio) {
+		struct folio	*folio;
 		loff_t		next_pos;
 
-		si->folio = xfile_get_folio(si->array->xfile, idx_pos,
+		folio = xfile_get_folio(si->array->xfile, idx_pos,
 				si->array->obj_size, XFILE_ALLOC);
-		if (IS_ERR(si->folio))
-			return PTR_ERR(si->folio);
+		if (IS_ERR(folio))
+			return PTR_ERR(folio);
+		si->folio = folio;
 
 		si->first_folio_idx = xfarray_idx(si->array,
 				folio_pos(si->folio) + si->array->obj_size - 1);
@@ -1048,6 +1050,7 @@ xfarray_sort(
 
 out_free:
 	trace_xfarray_sort_stats(si, error);
+	xfarray_sort_scan_done(si);
 	kvfree(si);
 	return error;
 }

fs/xfs/xfs_attr_item.c

@@ -746,7 +746,7 @@ xfs_attr_recover_work(
 	struct xfs_attri_log_format	*attrp;
 	struct xfs_attri_log_nameval	*nv = attrip->attri_nameval;
 	int				error;
-	int				total;
+	unsigned int			total = 0;
 
 	/*
 	 * First check the validity of the attr described by the ATTRI.  If any
@@ -763,7 +763,20 @@ xfs_attr_recover_work(
 		return PTR_ERR(attr);
 	args = attr->xattri_da_args;
 
-	xfs_init_attr_trans(args, &resv, &total);
+	switch (xfs_attr_intent_op(attr)) {
+	case XFS_ATTRI_OP_FLAGS_PPTR_SET:
+	case XFS_ATTRI_OP_FLAGS_PPTR_REPLACE:
+	case XFS_ATTRI_OP_FLAGS_SET:
+	case XFS_ATTRI_OP_FLAGS_REPLACE:
+		resv = xfs_attr_set_resv(args);
+		total = args->total;
+		break;
+	case XFS_ATTRI_OP_FLAGS_PPTR_REMOVE:
+	case XFS_ATTRI_OP_FLAGS_REMOVE:
+		resv = M_RES(mp)->tr_attrrm;
+		total = XFS_ATTRRM_SPACE_RES(mp);
+		break;
+	}
 	resv = xlog_recover_resv(&resv);
 	error = xfs_trans_alloc(mp, &resv, total, 0, XFS_TRANS_RESERVE, &tp);
 	if (error)

fs/xfs/xfs_handle.c

@@ -773,11 +773,6 @@ xfs_getparents_expand_lastrec(
 	trace_xfs_getparents_expand_lastrec(gpx->ip, gp, &gpx->context, gpr);
 }
 
-static inline void __user *u64_to_uptr(u64 val)
-{
-	return (void __user *)(uintptr_t)val;
-}
-
 /* Retrieve the parent pointers for a given inode. */
 STATIC int
 xfs_getparents(
@@ -862,7 +857,7 @@ xfs_getparents(
 	ASSERT(gpx->context.firstu <= gpx->gph.gph_request.gp_bufsize);
 
 	/* Copy the records to userspace. */
-	if (copy_to_user(u64_to_uptr(gpx->gph.gph_request.gp_buffer),
+	if (copy_to_user(u64_to_user_ptr(gpx->gph.gph_request.gp_buffer),
 				gpx->krecords, gpx->context.firstu))
 		error = -EFAULT;
 

fs/xfs/xfs_iwalk.c

@@ -351,7 +351,6 @@ xfs_iwalk_run_callbacks(
 	int				*has_more)
 {
 	struct xfs_mount		*mp = iwag->mp;
-	struct xfs_inobt_rec_incore	*irec;
 	xfs_agino_t			next_agino;
 	int				error;
 
@@ -361,8 +360,8 @@ xfs_iwalk_run_callbacks(
 
 	/* Delete cursor but remember the last record we cached... */
 	xfs_iwalk_del_inobt(iwag->tp, curpp, agi_bpp, 0);
-	irec = &iwag->recs[iwag->nr_recs - 1];
-	ASSERT(next_agino >= irec->ir_startino + XFS_INODES_PER_CHUNK);
+	ASSERT(next_agino >= iwag->recs[iwag->nr_recs - 1].ir_startino +
+			XFS_INODES_PER_CHUNK);
 
 	if (iwag->drop_trans) {
 		xfs_trans_cancel(iwag->tp);

fs/xfs/xfs_reflink.c

@@ -1387,6 +1387,7 @@ xfs_reflink_remap_blocks(
 		destoff += imap.br_blockcount;
 		len -= imap.br_blockcount;
 		remapped_len += imap.br_blockcount;
+		cond_resched();
 	}
 
 	if (error)