From 10090be25c159c02208b7abf89ae90f8105a2423 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 11 Oct 2007 18:11:03 +1000 Subject: [PATCH] [XFS] cleanup vnode useage in xfs_iget.c Get rid of vnode useage in xfs_iget.c and pass Linux inode / xfs_inode where apropinquate. And kill some useless helpers while we're at it. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:29808a Signed-off-by: Christoph Hellwig Signed-off-by: Lachlan McIlroy Signed-off-by: Tim Shimmin --- fs/xfs/linux-2.6/xfs_vnode.c | 14 ---- fs/xfs/linux-2.6/xfs_vnode.h | 6 -- fs/xfs/xfs_iget.c | 142 ++++++++++++++++------------------- fs/xfs/xfs_inode.h | 1 - 4 files changed, 65 insertions(+), 98 deletions(-) diff --git a/fs/xfs/linux-2.6/xfs_vnode.c b/fs/xfs/linux-2.6/xfs_vnode.c index d42a33cd9d3d..8f0f74fc703a 100644 --- a/fs/xfs/linux-2.6/xfs_vnode.c +++ b/fs/xfs/linux-2.6/xfs_vnode.c @@ -82,20 +82,6 @@ vn_ioerror( xfs_do_force_shutdown(ip->i_mount, 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); - - ASSERT(VN_CACHED(vp) == 0); - - return vp; -} - /* * Revalidate the Linux inode from the XFS inode. * Note: i_size _not_ updated; we must hold the inode diff --git a/fs/xfs/linux-2.6/xfs_vnode.h b/fs/xfs/linux-2.6/xfs_vnode.h index 59cbe4035d47..b5ea418693b1 100644 --- a/fs/xfs/linux-2.6/xfs_vnode.h +++ b/fs/xfs/linux-2.6/xfs_vnode.h @@ -187,7 +187,6 @@ typedef struct bhv_vattr { (VN_ISREG(vp) && ((mode) & (VSGID|(VEXEC>>3))) == VSGID) extern void vn_init(void); -extern bhv_vnode_t *vn_initialize(struct inode *); extern int vn_revalidate(bhv_vnode_t *); /* @@ -236,11 +235,6 @@ static inline bhv_vnode_t *vn_grab(bhv_vnode_t *vp) /* * Dealing with bad inodes */ -static inline void vn_mark_bad(bhv_vnode_t *vp) -{ - make_bad_inode(vn_to_inode(vp)); -} - static inline int VN_BAD(bhv_vnode_t *vp) { return is_bad_inode(vn_to_inode(vp)); diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c index 15dba2ef847f..eecc33d3751f 100644 --- a/fs/xfs/xfs_iget.c +++ b/fs/xfs/xfs_iget.c @@ -65,7 +65,7 @@ */ STATIC int xfs_iget_core( - bhv_vnode_t *vp, + struct inode *inode, xfs_mount_t *mp, xfs_trans_t *tp, xfs_ino_t ino, @@ -74,9 +74,9 @@ xfs_iget_core( xfs_inode_t **ipp, xfs_daddr_t bno) { + struct inode *old_inode; xfs_inode_t *ip; xfs_inode_t *iq; - bhv_vnode_t *inode_vp; int error; xfs_icluster_t *icl, *new_icl = NULL; unsigned long first_index, mask; @@ -111,8 +111,8 @@ again: goto again; } - inode_vp = XFS_ITOV_NULL(ip); - if (inode_vp == NULL) { + old_inode = ip->i_vnode; + if (old_inode == NULL) { /* * If IRECLAIM is set this inode is * on its way out of the system, @@ -170,13 +170,11 @@ again: goto finish_inode; - } else if (vp != inode_vp) { - struct inode *inode = vn_to_inode(inode_vp); - + } else if (inode != old_inode) { /* The inode is being torn down, pause and * try again. */ - if (inode->i_state & (I_FREEING | I_CLEAR)) { + if (old_inode->i_state & (I_FREEING | I_CLEAR)) { read_unlock(&pag->pag_ici_lock); delay(1); XFS_STATS_INC(xs_ig_frecycle); @@ -189,7 +187,7 @@ again: */ cmn_err(CE_PANIC, "xfs_iget_core: ambiguous vns: vp/0x%p, invp/0x%p", - inode_vp, vp); + old_inode, inode); } /* @@ -231,7 +229,14 @@ finish_inode: xfs_itrace_exit_tag(ip, "xfs_iget.alloc"); - xfs_inode_lock_init(ip, vp); + + mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, + "xfsino", ip->i_ino); + mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); + init_waitqueue_head(&ip->i_ipin_wait); + atomic_set(&ip->i_pincount, 0); + initnsema(&ip->i_flock, 1, "xfsfino"); + if (lock_flags) xfs_ilock(ip, lock_flags); @@ -334,7 +339,7 @@ finish_inode: * If we have a real type for an on-disk inode, we can set ops(&unlock) * now. If it's a new inode being created, xfs_ialloc will handle it. */ - xfs_initialize_vnode(mp, vp, ip); + xfs_initialize_vnode(mp, inode, ip); return 0; } @@ -354,69 +359,58 @@ xfs_iget( xfs_daddr_t bno) { struct inode *inode; - bhv_vnode_t *vp = NULL; + xfs_inode_t *ip; int error; XFS_STATS_INC(xs_ig_attempts); retry: inode = iget_locked(mp->m_super, ino); - if (inode) { - xfs_inode_t *ip; - - vp = vn_from_inode(inode); - if (inode->i_state & I_NEW) { - vn_initialize(inode); - error = xfs_iget_core(vp, mp, tp, ino, flags, - lock_flags, ipp, bno); - if (error) { - vn_mark_bad(vp); - if (inode->i_state & I_NEW) - unlock_new_inode(inode); - iput(inode); - } - } else { - /* - * If the inode is not fully constructed due to - * filehandle mismatches wait for the inode to go - * away and try again. - * - * iget_locked will call __wait_on_freeing_inode - * to wait for the inode to go away. - */ - if (is_bad_inode(inode) || - ((ip = xfs_vtoi(vp)) == NULL)) { - iput(inode); - delay(1); - goto retry; - } - - if (lock_flags != 0) - xfs_ilock(ip, lock_flags); - XFS_STATS_INC(xs_ig_found); - *ipp = ip; - error = 0; + if (!inode) + /* If we got no inode we are out of memory */ + return ENOMEM; + + if (inode->i_state & I_NEW) { + XFS_STATS_INC(vn_active); + XFS_STATS_INC(vn_alloc); + + error = xfs_iget_core(inode, mp, tp, ino, flags, + lock_flags, ipp, bno); + if (error) { + make_bad_inode(inode); + if (inode->i_state & I_NEW) + unlock_new_inode(inode); + iput(inode); } - } else - error = ENOMEM; /* If we got no inode we are out of memory */ + return error; + } - return error; -} + /* + * If the inode is not fully constructed due to + * filehandle mismatches wait for the inode to go + * away and try again. + * + * iget_locked will call __wait_on_freeing_inode + * to wait for the inode to go away. + */ + if (is_bad_inode(inode)) { + iput(inode); + delay(1); + goto retry; + } -/* - * Do the setup for the various locks within the incore inode. - */ -void -xfs_inode_lock_init( - xfs_inode_t *ip, - bhv_vnode_t *vp) -{ - mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, - "xfsino", ip->i_ino); - mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); - init_waitqueue_head(&ip->i_ipin_wait); - atomic_set(&ip->i_pincount, 0); - initnsema(&ip->i_flock, 1, "xfsfino"); + ip = XFS_I(inode); + if (!ip) { + iput(inode); + delay(1); + goto retry; + } + + if (lock_flags != 0) + xfs_ilock(ip, lock_flags); + XFS_STATS_INC(xs_ig_found); + *ipp = ip; + return 0; } /* @@ -456,11 +450,9 @@ void xfs_iput(xfs_inode_t *ip, uint lock_flags) { - bhv_vnode_t *vp = XFS_ITOV(ip); - xfs_itrace_entry(ip); xfs_iunlock(ip, lock_flags); - VN_RELE(vp); + IRELE(ip); } /* @@ -470,20 +462,19 @@ void xfs_iput_new(xfs_inode_t *ip, uint lock_flags) { - bhv_vnode_t *vp = XFS_ITOV(ip); - struct inode *inode = vn_to_inode(vp); + struct inode *inode = ip->i_vnode; xfs_itrace_entry(ip); if ((ip->i_d.di_mode == 0)) { ASSERT(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); - vn_mark_bad(vp); + make_bad_inode(inode); } if (inode->i_state & I_NEW) unlock_new_inode(inode); if (lock_flags) xfs_iunlock(ip, lock_flags); - VN_RELE(vp); + IRELE(ip); } @@ -496,8 +487,6 @@ xfs_iput_new(xfs_inode_t *ip, void xfs_ireclaim(xfs_inode_t *ip) { - bhv_vnode_t *vp; - /* * Remove from old hash list and mount list. */ @@ -526,9 +515,8 @@ xfs_ireclaim(xfs_inode_t *ip) /* * Pull our behavior descriptor from the vnode chain. */ - vp = XFS_ITOV_NULL(ip); - if (vp) { - vn_to_inode(vp)->i_private = NULL; + if (ip->i_vnode) { + ip->i_vnode->i_private = NULL; ip->i_vnode = NULL; } diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 88caadde6077..d8ed51e28cbb 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -468,7 +468,6 @@ void xfs_ihash_init(struct xfs_mount *); void xfs_ihash_free(struct xfs_mount *); xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t, struct xfs_trans *); -void xfs_inode_lock_init(xfs_inode_t *, bhv_vnode_t *); int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, uint, uint, xfs_inode_t **, xfs_daddr_t); void xfs_iput(xfs_inode_t *, uint); -- 2.30.2