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| author | David Chinner | 2006-03-14 03:29:16 +0100 |
|---|---|---|
| committer | Nathan Scott | 2006-03-14 03:29:16 +0100 |
| commit | 01e1b69cfcdcfdd5b405165eaba29428f8b18a7c (patch) | |
| tree | 3ca7e8d0047ff03ca532f39b0fc4cd50381e8ecc /fs/xfs/linux-2.6/xfs_linux.h | |
| parent | [XFS] Add xfs_map_buffer helper, use it in a couple of places. (diff) | |
| download | kernel-qcow2-linux-01e1b69cfcdcfdd5b405165eaba29428f8b18a7c.tar.gz kernel-qcow2-linux-01e1b69cfcdcfdd5b405165eaba29428f8b18a7c.tar.xz kernel-qcow2-linux-01e1b69cfcdcfdd5b405165eaba29428f8b18a7c.zip | |
[XFS] using a spinlock per cpu for superblock counter exclusion results in
a preēmpt counter overflow at 256p and above. Change the exclusion
mechanism to use atomic bit operations and busy wait loops to emulate the
spin lock exclusion mechanism but without the preempt count issues.
SGI-PV: 950027
SGI-Modid: xfs-linux-melb:xfs-kern:25338a
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_linux.h')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_linux.h | 1 |
1 files changed, 1 insertions, 0 deletions
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 <linux/sort.h> #include <linux/cpu.h> #include <linux/notifier.h> +#include <linux/delay.h> #include <asm/page.h> #include <asm/div64.h> |