diff options
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_vnode.c')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_vnode.c | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/fs/xfs/linux-2.6/xfs_vnode.c b/fs/xfs/linux-2.6/xfs_vnode.c deleted file mode 100644 index ada24baf88d..00000000000 --- a/fs/xfs/linux-2.6/xfs_vnode.c +++ /dev/null @@ -1,238 +0,0 @@ -/* - * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" - -uint64_t vn_generation; /* vnode generation number */ -DEFINE_SPINLOCK(vnumber_lock); - -/* - * Dedicated vnode inactive/reclaim sync semaphores. - * Prime number of hash buckets since address is used as the key. - */ -#define NVSYNC 37 -#define vptosync(v) (&vsync[((unsigned long)v) % NVSYNC]) -static wait_queue_head_t vsync[NVSYNC]; - -void -vn_init(void) -{ - int i; - - for (i = 0; i < NVSYNC; i++) - init_waitqueue_head(&vsync[i]); -} - -void -vn_iowait( - bhv_vnode_t *vp) -{ - wait_queue_head_t *wq = vptosync(vp); - - wait_event(*wq, (atomic_read(&vp->v_iocount) == 0)); -} - -void -vn_iowake( - bhv_vnode_t *vp) -{ - if (atomic_dec_and_test(&vp->v_iocount)) - wake_up(vptosync(vp)); -} - -/* - * Volume managers supporting multiple paths can send back ENODEV when the - * final path disappears. In this case continuing to fill the page cache - * with dirty data which cannot be written out is evil, so prevent that. - */ -void -vn_ioerror( - bhv_vnode_t *vp, - int error, - char *f, - int l) -{ - if (unlikely(error == -ENODEV)) - bhv_vfs_force_shutdown(vp->v_vfsp, SHUTDOWN_DEVICE_REQ, f, l); -} - -bhv_vnode_t * -vn_initialize( - struct inode *inode) -{ - bhv_vnode_t *vp = vn_from_inode(inode); - - XFS_STATS_INC(vn_active); - XFS_STATS_INC(vn_alloc); - - vp->v_flag = VMODIFIED; - spinlock_init(&vp->v_lock, "v_lock"); - - spin_lock(&vnumber_lock); - if (!++vn_generation) /* v_number shouldn't be zero */ - vn_generation++; - vp->v_number = vn_generation; - spin_unlock(&vnumber_lock); - - ASSERT(VN_CACHED(vp) == 0); - - /* Initialize the first behavior and the behavior chain head. */ - vn_bhv_head_init(VN_BHV_HEAD(vp), "vnode"); - - atomic_set(&vp->v_iocount, 0); - -#ifdef XFS_VNODE_TRACE - vp->v_trace = ktrace_alloc(VNODE_TRACE_SIZE, KM_SLEEP); -#endif /* XFS_VNODE_TRACE */ - - vn_trace_exit(vp, __FUNCTION__, (inst_t *)__return_address); - return vp; -} - -/* - * Revalidate the Linux inode from the vattr. - * Note: i_size _not_ updated; we must hold the inode - * semaphore when doing that - callers responsibility. - */ -void -vn_revalidate_core( - bhv_vnode_t *vp, - bhv_vattr_t *vap) -{ - struct inode *inode = vn_to_inode(vp); - - inode->i_mode = vap->va_mode; - inode->i_nlink = vap->va_nlink; - inode->i_uid = vap->va_uid; - inode->i_gid = vap->va_gid; - inode->i_blocks = vap->va_nblocks; - inode->i_mtime = vap->va_mtime; - inode->i_ctime = vap->va_ctime; - if (vap->va_xflags & XFS_XFLAG_IMMUTABLE) - inode->i_flags |= S_IMMUTABLE; - else - inode->i_flags &= ~S_IMMUTABLE; - if (vap->va_xflags & XFS_XFLAG_APPEND) - inode->i_flags |= S_APPEND; - else - inode->i_flags &= ~S_APPEND; - if (vap->va_xflags & XFS_XFLAG_SYNC) - inode->i_flags |= S_SYNC; - else - inode->i_flags &= ~S_SYNC; - if (vap->va_xflags & XFS_XFLAG_NOATIME) - inode->i_flags |= S_NOATIME; - else - inode->i_flags &= ~S_NOATIME; -} - -/* - * Revalidate the Linux inode from the vnode. - */ -int -__vn_revalidate( - bhv_vnode_t *vp, - bhv_vattr_t *vattr) -{ - int error; - - vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address); - vattr->va_mask = XFS_AT_STAT | XFS_AT_XFLAGS; - error = bhv_vop_getattr(vp, vattr, 0, NULL); - if (likely(!error)) { - vn_revalidate_core(vp, vattr); - VUNMODIFY(vp); - } - return -error; -} - -int -vn_revalidate( - bhv_vnode_t *vp) -{ - bhv_vattr_t vattr; - - return __vn_revalidate(vp, &vattr); -} - -/* - * Add a reference to a referenced vnode. - */ -bhv_vnode_t * -vn_hold( - bhv_vnode_t *vp) -{ - struct inode *inode; - - XFS_STATS_INC(vn_hold); - - VN_LOCK(vp); - inode = igrab(vn_to_inode(vp)); - ASSERT(inode); - VN_UNLOCK(vp, 0); - - return vp; -} - -#ifdef XFS_VNODE_TRACE - -#define KTRACE_ENTER(vp, vk, s, line, ra) \ - ktrace_enter( (vp)->v_trace, \ -/* 0 */ (void *)(__psint_t)(vk), \ -/* 1 */ (void *)(s), \ -/* 2 */ (void *)(__psint_t) line, \ -/* 3 */ (void *)(__psint_t)(vn_count(vp)), \ -/* 4 */ (void *)(ra), \ -/* 5 */ (void *)(__psunsigned_t)(vp)->v_flag, \ -/* 6 */ (void *)(__psint_t)current_cpu(), \ -/* 7 */ (void *)(__psint_t)current_pid(), \ -/* 8 */ (void *)__return_address, \ -/* 9 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL) - -/* - * Vnode tracing code. - */ -void -vn_trace_entry(bhv_vnode_t *vp, const char *func, inst_t *ra) -{ - KTRACE_ENTER(vp, VNODE_KTRACE_ENTRY, func, 0, ra); -} - -void -vn_trace_exit(bhv_vnode_t *vp, const char *func, inst_t *ra) -{ - KTRACE_ENTER(vp, VNODE_KTRACE_EXIT, func, 0, ra); -} - -void -vn_trace_hold(bhv_vnode_t *vp, char *file, int line, inst_t *ra) -{ - KTRACE_ENTER(vp, VNODE_KTRACE_HOLD, file, line, ra); -} - -void -vn_trace_ref(bhv_vnode_t *vp, char *file, int line, inst_t *ra) -{ - KTRACE_ENTER(vp, VNODE_KTRACE_REF, file, line, ra); -} - -void -vn_trace_rele(bhv_vnode_t *vp, char *file, int line, inst_t *ra) -{ - KTRACE_ENTER(vp, VNODE_KTRACE_RELE, file, line, ra); -} -#endif /* XFS_VNODE_TRACE */ |