]> pilppa.org Git - linux-2.6-omap-h63xx.git/blobdiff - fs/xfs/xfs_iget.c
[NET]: Don't send ICMP_FRAG_NEEDED for GSO packets
[linux-2.6-omap-h63xx.git] / fs / xfs / xfs_iget.c
index 5363025ded7e0d5a7ac9e047b45ef5a0239ad2fb..8e09b71f4104a91e0e6e2ba00ce8384d1b780499 100644 (file)
@@ -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,
@@ -140,28 +140,9 @@ again:
                                return ENOENT;
                        }
 
-                       /*
-                        * There may be transactions sitting in the
-                        * incore log buffers or being flushed to disk
-                        * at this time.  We can't clear the
-                        * XFS_IRECLAIMABLE flag until these
-                        * transactions have hit the disk, otherwise we
-                        * will void the guarantee the flag provides
-                        * xfs_iunpin()
-                        */
-                       if (xfs_ipincount(ip)) {
-                               read_unlock(&pag->pag_ici_lock);
-                               xfs_log_force(mp, 0,
-                                       XFS_LOG_FORCE|XFS_LOG_SYNC);
-                               XFS_STATS_INC(xs_ig_frecycle);
-                               goto again;
-                       }
-
-                       _xfs_itrace_exit(ip, "xfs_iget.alloc",
-                               (inst_t *)__return_address);
+                       xfs_itrace_exit_tag(ip, "xfs_iget.alloc");
 
                        XFS_STATS_INC(xs_ig_found);
-
                        xfs_iflags_clear(ip, XFS_IRECLAIMABLE);
                        read_unlock(&pag->pag_ici_lock);
 
@@ -171,13 +152,11 @@ 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);
@@ -190,7 +169,7 @@ again:
 */
                        cmn_err(CE_PANIC,
                "xfs_iget_core: ambiguous vns: vp/0x%p, invp/0x%p",
-                                       inode_vp, vp);
+                                       old_inode, inode);
                }
 
                /*
@@ -200,20 +179,16 @@ again:
                XFS_STATS_INC(xs_ig_found);
 
 finish_inode:
-               if (ip->i_d.di_mode == 0) {
-                       if (!(flags & XFS_IGET_CREATE)) {
-                               xfs_put_perag(mp, pag);
-                               return ENOENT;
-                       }
-                       xfs_iocore_inode_reinit(ip);
+               if (ip->i_d.di_mode == 0 && !(flags & XFS_IGET_CREATE)) {
+                       xfs_put_perag(mp, pag);
+                       return ENOENT;
                }
 
                if (lock_flags != 0)
                        xfs_ilock(ip, lock_flags);
 
                xfs_iflags_clear(ip, XFS_ISTALE);
-               _xfs_itrace_exit(ip, "xfs_iget.found",
-                                       (inst_t *)__return_address);
+               xfs_itrace_exit_tag(ip, "xfs_iget.found");
                goto return_ip;
        }
 
@@ -234,10 +209,16 @@ finish_inode:
                return error;
        }
 
-       _xfs_itrace_exit(ip, "xfs_iget.alloc", (inst_t *)__return_address);
+       xfs_itrace_exit_tag(ip, "xfs_iget.alloc");
+
+
+       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");
 
-       xfs_inode_lock_init(ip, vp);
-       xfs_iocore_inode_init(ip);
        if (lock_flags)
                xfs_ilock(ip, lock_flags);
 
@@ -254,6 +235,7 @@ finish_inode:
         */
        new_icl = kmem_zone_alloc(xfs_icluster_zone, KM_SLEEP);
        if (radix_tree_preload(GFP_KERNEL)) {
+               xfs_idestroy(ip);
                delay(1);
                goto again;
        }
@@ -333,9 +315,6 @@ finish_inode:
        ASSERT(ip->i_df.if_ext_max ==
               XFS_IFORK_DSIZE(ip) / sizeof(xfs_bmbt_rec_t));
 
-       ASSERT(((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) != 0) ==
-              ((ip->i_iocore.io_flags & XFS_IOCORE_RT) != 0));
-
        xfs_iflags_set(ip, XFS_IMODIFIED);
        *ipp = ip;
 
@@ -343,7 +322,7 @@ 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;
 }
 
@@ -363,69 +342,58 @@ 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;
 }
 
 /*
@@ -465,11 +433,9 @@ 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);
 }
 
 /*
@@ -479,20 +445,19 @@ 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);
 }
 
 
@@ -505,8 +470,6 @@ 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.
         */
@@ -535,9 +498,8 @@ 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;
        }