1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Copyright (c) 2018-2024 Oracle.  All Rights Reserved.
47 	struct xfs_inode	*ip,  in xfs_metafile_set_iflag()  argument
50 	VFS_I(ip)->i_mode &= ~0777;  in xfs_metafile_set_iflag()
51 	VFS_I(ip)->i_uid = GLOBAL_ROOT_UID;  in xfs_metafile_set_iflag()
52 	VFS_I(ip)->i_gid = GLOBAL_ROOT_GID;  in xfs_metafile_set_iflag()
53 	if (S_ISDIR(VFS_I(ip)->i_mode))  in xfs_metafile_set_iflag()
54 		ip->i_diflags |= XFS_METADIR_DIFLAGS;  in xfs_metafile_set_iflag()
56 		ip->i_diflags |= XFS_METAFILE_DIFLAGS;  in xfs_metafile_set_iflag()
57 	ip->i_diflags2 &= ~XFS_DIFLAG2_DAX;  in xfs_metafile_set_iflag()
58 	ip->i_diflags2 |= XFS_DIFLAG2_METADATA;  in xfs_metafile_set_iflag()
59 	ip->i_metatype = metafile_type;  in xfs_metafile_set_iflag()
60 	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);  in xfs_metafile_set_iflag()
67 	struct xfs_inode	*ip)  in xfs_metafile_clear_iflag()  argument
69 	ASSERT(xfs_is_metadir_inode(ip));  in xfs_metafile_clear_iflag()
70 	ASSERT(VFS_I(ip)->i_nlink == 0);  in xfs_metafile_clear_iflag()
72 	ip->i_diflags2 &= ~XFS_DIFLAG2_METADATA;  in xfs_metafile_clear_iflag()
73 	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);  in xfs_metafile_clear_iflag()
82 	struct xfs_inode	*ip,  in xfs_metafile_resv_can_cover()  argument
89 	 * touching the per-cpu counter.  in xfs_metafile_resv_can_cover()
91 	if (ip->i_delayed_blks >= rhs)  in xfs_metafile_resv_can_cover()
95 	 * There aren't enough blocks left in the inode's reservation, but it  in xfs_metafile_resv_can_cover()
98 	return __percpu_counter_compare(&ip->i_mount->m_fdblocks,  in xfs_metafile_resv_can_cover()
99 			rhs - ip->i_delayed_blks, 2048) >= 0;  in xfs_metafile_resv_can_cover()
103  * Is this metadata file critically low on blocks?  For now we'll define that
104  * as the number of blocks we can get our hands on being less than 10% of what
109 	struct xfs_inode	*ip)  in xfs_metafile_resv_critical()  argument
113 	if (!ip)  in xfs_metafile_resv_critical()
116 	ASSERT(xfs_is_metadir_inode(ip));  in xfs_metafile_resv_critical()
117 	trace_xfs_metafile_resv_critical(ip, 0);  in xfs_metafile_resv_critical()
119 	if (!xfs_metafile_resv_can_cover(ip, ip->i_mount->m_rtbtree_maxlevels))  in xfs_metafile_resv_critical()
122 	asked_low_water = div_u64(ip->i_meta_resv_asked, 10);  in xfs_metafile_resv_critical()
123 	if (!xfs_metafile_resv_can_cover(ip, asked_low_water))  in xfs_metafile_resv_critical()
126 	return XFS_TEST_ERROR(false, ip->i_mount,  in xfs_metafile_resv_critical()
133 	struct xfs_inode	*ip,  in xfs_metafile_resv_alloc_space()  argument
136 	int64_t			len = args->len;  in xfs_metafile_resv_alloc_space()
138 	ASSERT(xfs_is_metadir_inode(ip));  in xfs_metafile_resv_alloc_space()
139 	ASSERT(args->resv == XFS_AG_RESV_METAFILE);  in xfs_metafile_resv_alloc_space()
141 	trace_xfs_metafile_resv_alloc_space(ip, args->len);  in xfs_metafile_resv_alloc_space()
144 	 * Allocate the blocks from the metadata inode's block reservation  in xfs_metafile_resv_alloc_space()
147 	if (ip->i_delayed_blks > 0) {  in xfs_metafile_resv_alloc_space()
150 		from_resv = min_t(int64_t, len, ip->i_delayed_blks);  in xfs_metafile_resv_alloc_space()
151 		ip->i_delayed_blks -= from_resv;  in xfs_metafile_resv_alloc_space()
152 		xfs_mod_delalloc(ip, 0, -from_resv);  in xfs_metafile_resv_alloc_space()
153 		xfs_trans_mod_sb(args->tp, XFS_TRANS_SB_RES_FDBLOCKS,  in xfs_metafile_resv_alloc_space()
154 				-from_resv);  in xfs_metafile_resv_alloc_space()
155 		len -= from_resv;  in xfs_metafile_resv_alloc_space()
159 	 * Any allocation in excess of the reservation requires in-core and  in xfs_metafile_resv_alloc_space()
160 	 * on-disk fdblocks updates.  If we can grab @len blocks from the  in xfs_metafile_resv_alloc_space()
161 	 * in-core fdblocks then all we need to do is update the on-disk  in xfs_metafile_resv_alloc_space()
169 		error = xfs_dec_fdblocks(ip->i_mount, len, true);  in xfs_metafile_resv_alloc_space()
175 		xfs_trans_mod_sb(args->tp, field, -len);  in xfs_metafile_resv_alloc_space()
178 	ip->i_nblocks += args->len;  in xfs_metafile_resv_alloc_space()
179 	xfs_trans_log_inode(args->tp, ip, XFS_ILOG_CORE);  in xfs_metafile_resv_alloc_space()
185 	struct xfs_inode	*ip,  in xfs_metafile_resv_free_space()  argument
191 	ASSERT(xfs_is_metadir_inode(ip));  in xfs_metafile_resv_free_space()
192 	trace_xfs_metafile_resv_free_space(ip, len);  in xfs_metafile_resv_free_space()
194 	ip->i_nblocks -= len;  in xfs_metafile_resv_free_space()
195 	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);  in xfs_metafile_resv_free_space()
198 	 * Add the freed blocks back into the inode's delalloc reservation  in xfs_metafile_resv_free_space()
201 	to_resv = ip->i_meta_resv_asked - (ip->i_nblocks + ip->i_delayed_blks);  in xfs_metafile_resv_free_space()
204 		ip->i_delayed_blks += to_resv;  in xfs_metafile_resv_free_space()
205 		xfs_mod_delalloc(ip, 0, to_resv);  in xfs_metafile_resv_free_space()
207 		len -= to_resv;  in xfs_metafile_resv_free_space()
211 	 * Everything else goes back to the filesystem, so update the in-core  in xfs_metafile_resv_free_space()
212 	 * and on-disk counters.  in xfs_metafile_resv_free_space()
221 	struct xfs_inode	*ip)  in xfs_metafile_resv_free()  argument
223 	/* Non-btree metadata inodes don't need space reservations. */  in xfs_metafile_resv_free()
224 	if (!ip || !ip->i_meta_resv_asked)  in xfs_metafile_resv_free()
227 	ASSERT(xfs_is_metadir_inode(ip));  in xfs_metafile_resv_free()
228 	trace_xfs_metafile_resv_free(ip, 0);  in xfs_metafile_resv_free()
230 	if (ip->i_delayed_blks) {  in xfs_metafile_resv_free()
231 		xfs_mod_delalloc(ip, 0, -ip->i_delayed_blks);  in xfs_metafile_resv_free()
232 		xfs_add_fdblocks(ip->i_mount, ip->i_delayed_blks);  in xfs_metafile_resv_free()
233 		ip->i_delayed_blks = 0;  in xfs_metafile_resv_free()
235 	ip->i_meta_resv_asked = 0;  in xfs_metafile_resv_free()
241 	struct xfs_inode	*ip,  in xfs_metafile_resv_init()  argument
248 	if (!ip || ip->i_meta_resv_asked > 0)  in xfs_metafile_resv_init()
251 	ASSERT(xfs_is_metadir_inode(ip));  in xfs_metafile_resv_init()
254 	 * Space taken by all other metadata btrees are accounted on-disk as  in xfs_metafile_resv_init()
258 	used = ip->i_nblocks;  in xfs_metafile_resv_init()
261 	hidden_space = ask - used;  in xfs_metafile_resv_init()
263 	error = xfs_dec_fdblocks(ip->i_mount, hidden_space, true);  in xfs_metafile_resv_init()
265 		trace_xfs_metafile_resv_init_error(ip, error, _RET_IP_);  in xfs_metafile_resv_init()
269 	xfs_mod_delalloc(ip, 0, hidden_space);  in xfs_metafile_resv_init()
270 	ip->i_delayed_blks = hidden_space;  in xfs_metafile_resv_init()
271 	ip->i_meta_resv_asked = ask;  in xfs_metafile_resv_init()
273 	trace_xfs_metafile_resv_init(ip, ask);  in xfs_metafile_resv_init()