From 8d280b98cfe3c0b69c37d355218975c1c0279bb0 Mon Sep 17 00:00:00 2001 From: David Chinner Date: Tue, 14 Mar 2006 13:13:09 +1100 Subject: [XFS] On machines with more than 8 cpus, when running parallel I/O threads, the incore superblock lock becomes the limiting factor for buffered write throughput. Make the contended fields in the incore superblock use per-cpu counters so that there is no global lock to limit scalability. SGI-PV: 946630 SGI-Modid: xfs-linux-melb:xfs-kern:25106a Signed-off-by: David Chinner Signed-off-by: Nathan Scott --- fs/xfs/linux-2.6/xfs_linux.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'fs/xfs/linux-2.6/xfs_linux.h') diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index 67389b745526..377a9f54a049 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -100,6 +100,11 @@ */ #undef HAVE_REFCACHE /* reference cache not needed for NFS in 2.6 */ #define HAVE_SENDFILE /* sendfile(2) exists in 2.6, but not in 2.4 */ +#if CONFIG_SMP +#define HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ +#else +#undef HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ +#endif /* * State flag for unwritten extent buffers. -- cgit v1.2.3 From d2c32edf64a7e9bc8dfb5cb3a8f7bf7be94c93ae Mon Sep 17 00:00:00 2001 From: Nathan Scott Date: Tue, 14 Mar 2006 13:20:13 +1100 Subject: [XFS] When compiling with gcc 4.0 and CONFIG_SMP unset, there are many warnings along the lines: xfs_linux.h:103:5: warning: "CONFIG_SMP" is not defined. SGI-PV: 946630 SGI-Modid: xfs-linux-melb:xfs-kern:25171a Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Nathan Scott --- fs/xfs/linux-2.6/xfs_linux.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/xfs/linux-2.6/xfs_linux.h') diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index 377a9f54a049..e2be64982bc1 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -100,7 +100,7 @@ */ #undef HAVE_REFCACHE /* reference cache not needed for NFS in 2.6 */ #define HAVE_SENDFILE /* sendfile(2) exists in 2.6, but not in 2.4 */ -#if CONFIG_SMP +#ifdef CONFIG_SMP #define HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ #else #undef HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ -- cgit v1.2.3 From e8234a6871aa0de1ed0aeeecb5230ecf3ab414e2 Mon Sep 17 00:00:00 2001 From: David Chinner Date: Tue, 14 Mar 2006 13:23:52 +1100 Subject: [XFS] Add support for hotplug CPUs to the per-CPU superblock counters by registering a notifier callback that listens to CPU up/down events to modify the counters appropriately. SGI-PV: 949726 SGI-Modid: xfs-linux-melb:xfs-kern:25214a Signed-off-by: David Chinner Signed-off-by: Nathan Scott --- fs/xfs/linux-2.6/xfs_linux.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/xfs/linux-2.6/xfs_linux.h') diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index e2be64982bc1..9fdc14cffb70 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -73,6 +73,8 @@ #include #include #include +#include +#include #include #include -- cgit v1.2.3 From 01e1b69cfcdcfdd5b405165eaba29428f8b18a7c Mon Sep 17 00:00:00 2001 From: David Chinner Date: Tue, 14 Mar 2006 13:29:16 +1100 Subject: =?UTF-8?q?[XFS]=20using=20a=20spinlock=20per=20cpu=20for=20superb?= =?UTF-8?q?lock=20counter=20exclusion=20results=20in=20a=20pre=C4=93mpt=20?= =?UTF-8?q?counter=20overflow=20at=20256p=20and=20above.=20Change=20the=20?= =?UTF-8?q?exclusion=20mechanism=20to=20use=20atomic=20bit=20operations=20?= =?UTF-8?q?and=20busy=20wait=20loops=20to=20emulate=20the=20spin=20lock=20?= =?UTF-8?q?exclusion=20mechanism=20but=20without=20the=20preempt=20count?= =?UTF-8?q?=20issues.?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit SGI-PV: 950027 SGI-Modid: xfs-linux-melb:xfs-kern:25338a Signed-off-by: David Chinner Signed-off-by: Nathan Scott --- fs/xfs/linux-2.6/xfs_linux.h | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/xfs/linux-2.6/xfs_linux.h') diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index 9fdc14cffb70..bd88ccb0cad0 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -75,6 +75,7 @@ #include #include #include +#include #include #include -- cgit v1.2.3 From ec86dc02fdc062d0d298814b1e78b482ab38caf7 Mon Sep 17 00:00:00 2001 From: Nathan Scott Date: Fri, 17 Mar 2006 17:25:36 +1100 Subject: [XFS] Complete transition away from linvfs naming convention, finally. SGI-PV: 947038 SGI-Modid: xfs-linux-melb:xfs-kern:25474a Signed-off-by: Nathan Scott --- fs/xfs/linux-2.6/xfs_linux.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/xfs/linux-2.6/xfs_linux.h') diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index bd88ccb0cad0..1fe09f2d6519 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -234,7 +234,7 @@ BUFFER_FNS(PrivateStart, unwritten); #define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL) #define xfs_stack_trace() dump_stack() #define xfs_itruncate_data(ip, off) \ - (-vmtruncate(LINVFS_GET_IP(XFS_ITOV(ip)), (off))) + (-vmtruncate(vn_to_inode(XFS_ITOV(ip)), (off))) #define xfs_statvfs_fsid(statp, mp) \ ({ u64 id = huge_encode_dev((mp)->m_ddev_targp->bt_dev); \ __kernel_fsid_t *fsid = &(statp)->f_fsid; \ -- cgit v1.2.3