Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / xfs / xfs_icache.h

diff --git a/kernel/fs/xfs/xfs_icache.h b/kernel/fs/xfs/xfs_icache.h
new file mode 100644 (file)
index 0000000..62f1f91
--- /dev/null
+++ b/kernel/fs/xfs/xfs_icache.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2000-2006 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
+ */
+#ifndef XFS_SYNC_H
+#define XFS_SYNC_H 1
+
+struct xfs_mount;
+struct xfs_perag;
+
+struct xfs_eofblocks {
+       __u32           eof_flags;
+       kuid_t          eof_uid;
+       kgid_t          eof_gid;
+       prid_t          eof_prid;
+       __u64           eof_min_file_size;
+       xfs_ino_t       eof_scan_owner;
+};
+
+#define SYNC_WAIT              0x0001  /* wait for i/o to complete */
+#define SYNC_TRYLOCK           0x0002  /* only try to lock inodes */
+
+/*
+ * tags for inode radix tree
+ */
+#define XFS_ICI_NO_TAG         (-1)    /* special flag for an untagged lookup
+                                          in xfs_inode_ag_iterator */
+#define XFS_ICI_RECLAIM_TAG    0       /* inode is to be reclaimed */
+#define XFS_ICI_EOFBLOCKS_TAG  1       /* inode has blocks beyond EOF */
+
+/*
+ * Flags for xfs_iget()
+ */
+#define XFS_IGET_CREATE                0x1
+#define XFS_IGET_UNTRUSTED     0x2
+#define XFS_IGET_DONTCACHE     0x4
+
+int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino,
+            uint flags, uint lock_flags, xfs_inode_t **ipp);
+
+/* recovery needs direct inode allocation capability */
+struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino);
+void xfs_inode_free(struct xfs_inode *ip);
+
+void xfs_reclaim_worker(struct work_struct *work);
+
+int xfs_reclaim_inodes(struct xfs_mount *mp, int mode);
+int xfs_reclaim_inodes_count(struct xfs_mount *mp);
+long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan);
+
+void xfs_inode_set_reclaim_tag(struct xfs_inode *ip);
+
+void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip);
+void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);
+int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *);
+int xfs_inode_free_quota_eofblocks(struct xfs_inode *ip);
+void xfs_eofblocks_worker(struct work_struct *);
+
+int xfs_inode_ag_iterator(struct xfs_mount *mp,
+       int (*execute)(struct xfs_inode *ip, int flags, void *args),
+       int flags, void *args);
+int xfs_inode_ag_iterator_tag(struct xfs_mount *mp,
+       int (*execute)(struct xfs_inode *ip, int flags, void *args),
+       int flags, void *args, int tag);
+
+static inline int
+xfs_fs_eofblocks_from_user(
+       struct xfs_fs_eofblocks         *src,
+       struct xfs_eofblocks            *dst)
+{
+       if (src->eof_version != XFS_EOFBLOCKS_VERSION)
+               return -EINVAL;
+
+       if (src->eof_flags & ~XFS_EOF_FLAGS_VALID)
+               return -EINVAL;
+
+       if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) ||
+           memchr_inv(src->pad64, 0, sizeof(src->pad64)))
+               return -EINVAL;
+
+       dst->eof_flags = src->eof_flags;
+       dst->eof_prid = src->eof_prid;
+       dst->eof_min_file_size = src->eof_min_file_size;
+       dst->eof_scan_owner = NULLFSINO;
+
+       dst->eof_uid = INVALID_UID;
+       if (src->eof_flags & XFS_EOF_FLAGS_UID) {
+               dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid);
+               if (!uid_valid(dst->eof_uid))
+                       return -EINVAL;
+       }
+
+       dst->eof_gid = INVALID_GID;
+       if (src->eof_flags & XFS_EOF_FLAGS_GID) {
+               dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid);
+               if (!gid_valid(dst->eof_gid))
+                       return -EINVAL;
+       }
+       return 0;
+}
+
+#endif