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);
86 * Revalidate the Linux inode from the XFS inode.
87 * Note: i_size _not_ updated; we must hold the inode
88 * semaphore when doing that - callers responsibility.
94 struct inode *inode = vn_to_inode(vp);
95 struct xfs_inode *ip = XFS_I(inode);
96 struct xfs_mount *mp = ip->i_mount;
101 if (XFS_FORCED_SHUTDOWN(mp))
104 xfs_ilock(ip, XFS_ILOCK_SHARED);
105 inode->i_mode = ip->i_d.di_mode;
106 inode->i_nlink = ip->i_d.di_nlink;
107 inode->i_uid = ip->i_d.di_uid;
108 inode->i_gid = ip->i_d.di_gid;
109 inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec;
110 inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec;
111 inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec;
112 inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec;
114 xflags = xfs_ip2xflags(ip);
115 if (xflags & XFS_XFLAG_IMMUTABLE)
116 inode->i_flags |= S_IMMUTABLE;
118 inode->i_flags &= ~S_IMMUTABLE;
119 if (xflags & XFS_XFLAG_APPEND)
120 inode->i_flags |= S_APPEND;
122 inode->i_flags &= ~S_APPEND;
123 if (xflags & XFS_XFLAG_SYNC)
124 inode->i_flags |= S_SYNC;
126 inode->i_flags &= ~S_SYNC;
127 if (xflags & XFS_XFLAG_NOATIME)
128 inode->i_flags |= S_NOATIME;
130 inode->i_flags &= ~S_NOATIME;
131 xfs_iunlock(ip, XFS_ILOCK_SHARED);
133 xfs_iflags_clear(ip, XFS_IMODIFIED);
138 * Add a reference to a referenced vnode.
146 XFS_STATS_INC(vn_hold);
148 inode = igrab(vn_to_inode(vp));
154 #ifdef XFS_INODE_TRACE
157 * Reference count of Linux inode if present, -1 if the xfs_inode
158 * has no associated Linux inode.
160 static inline int xfs_icount(struct xfs_inode *ip)
162 bhv_vnode_t *vp = XFS_ITOV_NULL(ip);
169 #define KTRACE_ENTER(ip, vk, s, line, ra) \
170 ktrace_enter( (ip)->i_trace, \
171 /* 0 */ (void *)(__psint_t)(vk), \
172 /* 1 */ (void *)(s), \
173 /* 2 */ (void *)(__psint_t) line, \
174 /* 3 */ (void *)(__psint_t)xfs_icount(ip), \
175 /* 4 */ (void *)(ra), \
177 /* 6 */ (void *)(__psint_t)current_cpu(), \
178 /* 7 */ (void *)(__psint_t)current_pid(), \
179 /* 8 */ (void *)__return_address, \
180 /* 9 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL)
183 * Vnode tracing code.
186 _xfs_itrace_entry(xfs_inode_t *ip, const char *func, inst_t *ra)
188 KTRACE_ENTER(ip, INODE_KTRACE_ENTRY, func, 0, ra);
192 _xfs_itrace_exit(xfs_inode_t *ip, const char *func, inst_t *ra)
194 KTRACE_ENTER(ip, INODE_KTRACE_EXIT, func, 0, ra);
198 xfs_itrace_hold(xfs_inode_t *ip, char *file, int line, inst_t *ra)
200 KTRACE_ENTER(ip, INODE_KTRACE_HOLD, file, line, ra);
204 _xfs_itrace_ref(xfs_inode_t *ip, char *file, int line, inst_t *ra)
206 KTRACE_ENTER(ip, INODE_KTRACE_REF, file, line, ra);
210 xfs_itrace_rele(xfs_inode_t *ip, char *file, int line, inst_t *ra)
212 KTRACE_ENTER(ip, INODE_KTRACE_RELE, file, line, ra);
214 #endif /* XFS_INODE_TRACE */