2 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 #include "xfs_vnodeops.h"
20 #include "xfs_bmap_btree.h"
21 #include "xfs_inode.h"
24 * And this gunk is needed for xfs_mount.h"
27 #include "xfs_trans.h"
29 #include "xfs_dmapi.h"
32 #include "xfs_mount.h"
36 * Dedicated vnode inactive/reclaim sync semaphores.
37 * Prime number of hash buckets since address is used as the key.
40 #define vptosync(v) (&vsync[((unsigned long)v) % NVSYNC])
41 static wait_queue_head_t vsync[NVSYNC];
48 for (i = 0; i < NVSYNC; i++)
49 init_waitqueue_head(&vsync[i]);
56 wait_queue_head_t *wq = vptosync(ip);
58 wait_event(*wq, (atomic_read(&ip->i_iocount) == 0));
65 if (atomic_dec_and_test(&ip->i_iocount))
66 wake_up(vptosync(ip));
70 * Volume managers supporting multiple paths can send back ENODEV when the
71 * final path disappears. In this case continuing to fill the page cache
72 * with dirty data which cannot be written out is evil, so prevent that.
81 if (unlikely(error == -ENODEV))
82 xfs_do_force_shutdown(ip->i_mount, SHUTDOWN_DEVICE_REQ, f, l);
89 bhv_vnode_t *vp = vn_from_inode(inode);
91 XFS_STATS_INC(vn_active);
92 XFS_STATS_INC(vn_alloc);
94 ASSERT(VN_CACHED(vp) == 0);
100 * Revalidate the Linux inode from the vattr.
101 * Note: i_size _not_ updated; we must hold the inode
102 * semaphore when doing that - callers responsibility.
109 struct inode *inode = vn_to_inode(vp);
111 inode->i_mode = vap->va_mode;
112 inode->i_nlink = vap->va_nlink;
113 inode->i_uid = vap->va_uid;
114 inode->i_gid = vap->va_gid;
115 inode->i_blocks = vap->va_nblocks;
116 inode->i_mtime = vap->va_mtime;
117 inode->i_ctime = vap->va_ctime;
118 if (vap->va_xflags & XFS_XFLAG_IMMUTABLE)
119 inode->i_flags |= S_IMMUTABLE;
121 inode->i_flags &= ~S_IMMUTABLE;
122 if (vap->va_xflags & XFS_XFLAG_APPEND)
123 inode->i_flags |= S_APPEND;
125 inode->i_flags &= ~S_APPEND;
126 if (vap->va_xflags & XFS_XFLAG_SYNC)
127 inode->i_flags |= S_SYNC;
129 inode->i_flags &= ~S_SYNC;
130 if (vap->va_xflags & XFS_XFLAG_NOATIME)
131 inode->i_flags |= S_NOATIME;
133 inode->i_flags &= ~S_NOATIME;
137 * Revalidate the Linux inode from the vnode.
146 vn_trace_entry(xfs_vtoi(vp), __FUNCTION__, (inst_t *)__return_address);
147 vattr->va_mask = XFS_AT_STAT | XFS_AT_XFLAGS;
148 error = xfs_getattr(xfs_vtoi(vp), vattr, 0);
149 if (likely(!error)) {
150 vn_revalidate_core(vp, vattr);
151 xfs_iflags_clear(xfs_vtoi(vp), XFS_IMODIFIED);
162 return __vn_revalidate(vp, &vattr);
166 * Add a reference to a referenced vnode.
174 XFS_STATS_INC(vn_hold);
176 inode = igrab(vn_to_inode(vp));
182 #ifdef XFS_VNODE_TRACE
185 * Reference count of Linux inode if present, -1 if the xfs_inode
186 * has no associated Linux inode.
188 static inline int xfs_icount(struct xfs_inode *ip)
190 bhv_vnode_t *vp = XFS_ITOV_NULL(ip);
197 #define KTRACE_ENTER(ip, vk, s, line, ra) \
198 ktrace_enter( (ip)->i_trace, \
199 /* 0 */ (void *)(__psint_t)(vk), \
200 /* 1 */ (void *)(s), \
201 /* 2 */ (void *)(__psint_t) line, \
202 /* 3 */ (void *)(__psint_t)xfs_icount(ip), \
203 /* 4 */ (void *)(ra), \
205 /* 6 */ (void *)(__psint_t)current_cpu(), \
206 /* 7 */ (void *)(__psint_t)current_pid(), \
207 /* 8 */ (void *)__return_address, \
208 /* 9 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL)
211 * Vnode tracing code.
214 vn_trace_entry(xfs_inode_t *ip, const char *func, inst_t *ra)
216 KTRACE_ENTER(ip, VNODE_KTRACE_ENTRY, func, 0, ra);
220 vn_trace_exit(xfs_inode_t *ip, const char *func, inst_t *ra)
222 KTRACE_ENTER(ip, VNODE_KTRACE_EXIT, func, 0, ra);
226 vn_trace_hold(xfs_inode_t *ip, char *file, int line, inst_t *ra)
228 KTRACE_ENTER(ip, VNODE_KTRACE_HOLD, file, line, ra);
232 vn_trace_ref(xfs_inode_t *ip, char *file, int line, inst_t *ra)
234 KTRACE_ENTER(ip, VNODE_KTRACE_REF, file, line, ra);
238 vn_trace_rele(xfs_inode_t *ip, char *file, int line, inst_t *ra)
240 KTRACE_ENTER(ip, VNODE_KTRACE_RELE, file, line, ra);
242 #endif /* XFS_VNODE_TRACE */