diff options
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_buf.c')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_buf.c | 62 |
1 files changed, 11 insertions, 51 deletions
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 660c24acb64..e22cce1a9d5 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -1,46 +1,20 @@ /* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved. + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as + * 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. + * 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. * - * Further, this software is distributed without any warranty that it is - * free of the rightful claim of any third person regarding infringement - * or the like. Any license provided herein, whether implied or - * otherwise, applies only to this software file. Patent licenses, if - * any, provided herein do not apply to combinations of this program with - * other software, or any other product whatsoever. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write the Free Software Foundation, Inc., 59 - * Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, - * Mountain View, CA 94043, or: - * - * http://www.sgi.com - * - * For further information regarding this notice, see: - * - * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + * 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 */ - -/* - * The xfs_buf.c code provides an abstract buffer cache model on top - * of the Linux page cache. Cached metadata blocks for a file system - * are hashed to the inode for the block device. xfs_buf.c assembles - * buffers (xfs_buf_t) on demand to aggregate such cached pages for I/O. - * - * Written by Steve Lord, Jim Mostek, Russell Cattelan - * and Rajagopal Ananthanarayanan ("ananth") at SGI. - * - */ - #include <linux/stddef.h> #include <linux/errno.h> #include <linux/slab.h> @@ -55,13 +29,8 @@ #include <linux/blkdev.h> #include <linux/hash.h> #include <linux/kthread.h> - #include "xfs_linux.h" -/* - * File wide globals - */ - STATIC kmem_cache_t *pagebuf_zone; STATIC kmem_shaker_t pagebuf_shake; STATIC int xfsbufd_wakeup(int, gfp_t); @@ -70,10 +39,6 @@ STATIC void pagebuf_delwri_queue(xfs_buf_t *, int); STATIC struct workqueue_struct *xfslogd_workqueue; struct workqueue_struct *xfsdatad_workqueue; -/* - * Pagebuf debugging - */ - #ifdef PAGEBUF_TRACE void pagebuf_trace( @@ -112,10 +77,6 @@ ktrace_t *pagebuf_trace_buf; # define PB_GET_OWNER(pb) do { } while (0) #endif -/* - * Pagebuf allocation / freeing. - */ - #define pb_to_gfp(flags) \ ((((flags) & PBF_READ_AHEAD) ? __GFP_NORETRY : \ ((flags) & PBF_DONT_BLOCK) ? GFP_NOFS : GFP_KERNEL) | __GFP_NOWARN) @@ -123,7 +84,6 @@ ktrace_t *pagebuf_trace_buf; #define pb_to_km(flags) \ (((flags) & PBF_DONT_BLOCK) ? KM_NOFS : KM_SLEEP) - #define pagebuf_allocate(flags) \ kmem_zone_alloc(pagebuf_zone, pb_to_km(flags)) #define pagebuf_deallocate(pb) \ |