1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Copyright (c) 2018-2024 Oracle.  All Rights Reserved.
50 	struct xfs_inode	*ip,  in xfs_metafile_set_iflag()  argument
53 	VFS_I(ip)->i_mode &= ~0777;  in xfs_metafile_set_iflag()
54 	VFS_I(ip)->i_uid = GLOBAL_ROOT_UID;  in xfs_metafile_set_iflag()
55 	VFS_I(ip)->i_gid = GLOBAL_ROOT_GID;  in xfs_metafile_set_iflag()
56 	if (S_ISDIR(VFS_I(ip)->i_mode))  in xfs_metafile_set_iflag()
57 		ip->i_diflags |= XFS_METADIR_DIFLAGS;  in xfs_metafile_set_iflag()
59 		ip->i_diflags |= XFS_METAFILE_DIFLAGS;  in xfs_metafile_set_iflag()
60 	ip->i_diflags2 &= ~XFS_DIFLAG2_DAX;  in xfs_metafile_set_iflag()
61 	ip->i_diflags2 |= XFS_DIFLAG2_METADATA;  in xfs_metafile_set_iflag()
62 	ip->i_metatype = metafile_type;  in xfs_metafile_set_iflag()
63 	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);  in xfs_metafile_set_iflag()
70 	struct xfs_inode	*ip)  in xfs_metafile_clear_iflag()  argument
72 	ASSERT(xfs_is_metadir_inode(ip));  in xfs_metafile_clear_iflag()
73 	ASSERT(VFS_I(ip)->i_nlink == 0);  in xfs_metafile_clear_iflag()
75 	ip->i_diflags2 &= ~XFS_DIFLAG2_METADATA;  in xfs_metafile_clear_iflag()
76 	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);  in xfs_metafile_clear_iflag()
91 	 * touching the per-cpu counter.  in xfs_metafile_resv_can_cover()
93 	if (mp->m_metafile_resv_avail >= rhs)  in xfs_metafile_resv_can_cover()
101 			rhs - mp->m_metafile_resv_avail, 2048) >= 0;  in xfs_metafile_resv_can_cover()
117 	if (!xfs_metafile_resv_can_cover(mp, mp->m_rtbtree_maxlevels))  in xfs_metafile_resv_critical()
121 			div_u64(mp->m_metafile_resv_target, 10)))  in xfs_metafile_resv_critical()
130 	struct xfs_inode	*ip,  in xfs_metafile_resv_alloc_space()  argument
133 	struct xfs_mount	*mp = ip->i_mount;  in xfs_metafile_resv_alloc_space()
134 	int64_t			len = args->len;  in xfs_metafile_resv_alloc_space()
136 	ASSERT(xfs_is_metadir_inode(ip));  in xfs_metafile_resv_alloc_space()
137 	ASSERT(args->resv == XFS_AG_RESV_METAFILE);  in xfs_metafile_resv_alloc_space()
139 	trace_xfs_metafile_resv_alloc_space(mp, args->len);  in xfs_metafile_resv_alloc_space()
145 	mutex_lock(&mp->m_metafile_resv_lock);  in xfs_metafile_resv_alloc_space()
146 	if (mp->m_metafile_resv_avail > 0) {  in xfs_metafile_resv_alloc_space()
149 		from_resv = min_t(int64_t, len, mp->m_metafile_resv_avail);  in xfs_metafile_resv_alloc_space()
150 		mp->m_metafile_resv_avail -= from_resv;  in xfs_metafile_resv_alloc_space()
151 		xfs_mod_delalloc(ip, 0, -from_resv);  in xfs_metafile_resv_alloc_space()
152 		xfs_trans_mod_sb(args->tp, XFS_TRANS_SB_RES_FDBLOCKS,  in xfs_metafile_resv_alloc_space()
153 				-from_resv);  in xfs_metafile_resv_alloc_space()
154 		len -= from_resv;  in xfs_metafile_resv_alloc_space()
158 	 * Any allocation in excess of the reservation requires in-core and  in xfs_metafile_resv_alloc_space()
159 	 * on-disk fdblocks updates.  If we can grab @len blocks from the  in xfs_metafile_resv_alloc_space()
160 	 * in-core fdblocks then all we need to do is update the on-disk  in xfs_metafile_resv_alloc_space()
168 		error = xfs_dec_fdblocks(ip->i_mount, len, true);  in xfs_metafile_resv_alloc_space()
174 		xfs_trans_mod_sb(args->tp, field, -len);  in xfs_metafile_resv_alloc_space()
177 	mp->m_metafile_resv_used += args->len;  in xfs_metafile_resv_alloc_space()
178 	mutex_unlock(&mp->m_metafile_resv_lock);  in xfs_metafile_resv_alloc_space()
180 	ip->i_nblocks += args->len;  in xfs_metafile_resv_alloc_space()
181 	xfs_trans_log_inode(args->tp, ip, XFS_ILOG_CORE);  in xfs_metafile_resv_alloc_space()
187 	struct xfs_inode	*ip,  in xfs_metafile_resv_free_space()  argument
191 	struct xfs_mount	*mp = ip->i_mount;  in xfs_metafile_resv_free_space()
194 	ASSERT(xfs_is_metadir_inode(ip));  in xfs_metafile_resv_free_space()
198 	ip->i_nblocks -= len;  in xfs_metafile_resv_free_space()
199 	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);  in xfs_metafile_resv_free_space()
201 	mutex_lock(&mp->m_metafile_resv_lock);  in xfs_metafile_resv_free_space()
202 	mp->m_metafile_resv_used -= len;  in xfs_metafile_resv_free_space()
208 	to_resv = mp->m_metafile_resv_target -  in xfs_metafile_resv_free_space()
209 		(mp->m_metafile_resv_used + mp->m_metafile_resv_avail);  in xfs_metafile_resv_free_space()
212 		mp->m_metafile_resv_avail += to_resv;  in xfs_metafile_resv_free_space()
213 		xfs_mod_delalloc(ip, 0, to_resv);  in xfs_metafile_resv_free_space()
215 		len -= to_resv;  in xfs_metafile_resv_free_space()
217 	mutex_unlock(&mp->m_metafile_resv_lock);  in xfs_metafile_resv_free_space()
220 	 * Everything else goes back to the filesystem, so update the in-core  in xfs_metafile_resv_free_space()
221 	 * and on-disk counters.  in xfs_metafile_resv_free_space()
231 	if (mp->m_metafile_resv_avail) {  in __xfs_metafile_resv_free()
232 		xfs_mod_sb_delalloc(mp, -(int64_t)mp->m_metafile_resv_avail);  in __xfs_metafile_resv_free()
233 		xfs_add_fdblocks(mp, mp->m_metafile_resv_avail);  in __xfs_metafile_resv_free()
235 	mp->m_metafile_resv_avail = 0;  in __xfs_metafile_resv_free()
236 	mp->m_metafile_resv_used = 0;  in __xfs_metafile_resv_free()
237 	mp->m_metafile_resv_target = 0;  in __xfs_metafile_resv_free()
250 	mutex_lock(&mp->m_metafile_resv_lock);  in xfs_metafile_resv_free()
252 	mutex_unlock(&mp->m_metafile_resv_lock);  in xfs_metafile_resv_free()
263 	xfs_rfsblock_t		dblocks_avail = mp->m_sb.sb_dblocks / 4;  in xfs_metafile_resv_init()
272 	mutex_lock(&mp->m_metafile_resv_lock);  in xfs_metafile_resv_init()
282 			used += rtg_rmap(rtg)->i_nblocks;  in xfs_metafile_resv_init()
286 			used += rtg_refcount(rtg)->i_nblocks;  in xfs_metafile_resv_init()
295 	 * Space taken by the per-AG metadata btrees are accounted on-disk as  in xfs_metafile_resv_init()
303 	hidden_space = target - used;  in xfs_metafile_resv_init()
313 	mp->m_metafile_resv_target = target;  in xfs_metafile_resv_init()
314 	mp->m_metafile_resv_used = used;  in xfs_metafile_resv_init()
315 	mp->m_metafile_resv_avail = hidden_space;  in xfs_metafile_resv_init()
320 	mutex_unlock(&mp->m_metafile_resv_lock);  in xfs_metafile_resv_init()