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authorIngo Molnar <mingo@elte.hu>2008-12-12 10:29:35 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-12 10:29:35 +0100
commitc1dfdc7597d051b09555d4ae2acb90403e238746 (patch)
tree86aa49f5a2ab25459f9196dd6724bbe6645b1375 /Documentation
parentefbe027e95dc13ac343b6130948418d7ead7ddf1 (diff)
parent8b1fae4e4200388b64dd88065639413cb3f1051c (diff)
downloadop-kernel-dev-c1dfdc7597d051b09555d4ae2acb90403e238746.zip
op-kernel-dev-c1dfdc7597d051b09555d4ae2acb90403e238746.tar.gz
Merge commit 'v2.6.28-rc8' into sched/core
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/DMA-API.txt8
-rw-r--r--Documentation/filesystems/ocfs2.txt3
-rw-r--r--Documentation/filesystems/proc.txt27
-rw-r--r--Documentation/local_ops.txt2
-rw-r--r--Documentation/spi/spi-summary2
5 files changed, 32 insertions, 10 deletions
diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt
index b8e8646..b462bb1 100644
--- a/Documentation/DMA-API.txt
+++ b/Documentation/DMA-API.txt
@@ -316,12 +316,10 @@ reduce current DMA mapping usage or delay and try again later).
pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
int nents, int direction)
-Maps a scatter gather list from the block layer.
-
Returns: the number of physical segments mapped (this may be shorter
-than <nents> passed in if the block layer determines that some
-elements of the scatter/gather list are physically adjacent and thus
-may be mapped with a single entry).
+than <nents> passed in if some elements of the scatter/gather list are
+physically or virtually adjacent and an IOMMU maps them with a single
+entry).
Please note that the sg cannot be mapped again if it has been mapped once.
The mapping process is allowed to destroy information in the sg.
diff --git a/Documentation/filesystems/ocfs2.txt b/Documentation/filesystems/ocfs2.txt
index 4340cc8..67310fb 100644
--- a/Documentation/filesystems/ocfs2.txt
+++ b/Documentation/filesystems/ocfs2.txt
@@ -28,10 +28,7 @@ Manish Singh <manish.singh@oracle.com>
Caveats
=======
Features which OCFS2 does not support yet:
- - extended attributes
- quotas
- - cluster aware flock
- - cluster aware lockf
- Directory change notification (F_NOTIFY)
- Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease)
- POSIX ACLs
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index bcceb99..bb1b0dd 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -44,6 +44,7 @@ Table of Contents
2.14 /proc/<pid>/io - Display the IO accounting fields
2.15 /proc/<pid>/coredump_filter - Core dump filtering settings
2.16 /proc/<pid>/mountinfo - Information about mounts
+ 2.17 /proc/sys/fs/epoll - Configuration options for the epoll interface
------------------------------------------------------------------------------
Preface
@@ -2483,4 +2484,30 @@ For more information on mount propagation see:
Documentation/filesystems/sharedsubtree.txt
+2.17 /proc/sys/fs/epoll - Configuration options for the epoll interface
+--------------------------------------------------------
+
+This directory contains configuration options for the epoll(7) interface.
+
+max_user_instances
+------------------
+
+This is the maximum number of epoll file descriptors that a single user can
+have open at a given time. The default value is 128, and should be enough
+for normal users.
+
+max_user_watches
+----------------
+
+Every epoll file descriptor can store a number of files to be monitored
+for event readiness. Each one of these monitored files constitutes a "watch".
+This configuration option sets the maximum number of "watches" that are
+allowed for each user.
+Each "watch" costs roughly 90 bytes on a 32bit kernel, and roughly 160 bytes
+on a 64bit one.
+The current default value for max_user_watches is the 1/32 of the available
+low memory, divided for the "watch" cost in bytes.
+
+
------------------------------------------------------------------------------
+
diff --git a/Documentation/local_ops.txt b/Documentation/local_ops.txt
index f4f8b1c..23045b8 100644
--- a/Documentation/local_ops.txt
+++ b/Documentation/local_ops.txt
@@ -149,7 +149,7 @@ static void do_test_timer(unsigned long data)
int cpu;
/* Increment the counters */
- on_each_cpu(test_each, NULL, 0, 1);
+ on_each_cpu(test_each, NULL, 1);
/* Read all the counters */
printk("Counters read from CPU %d\n", smp_processor_id());
for_each_online_cpu(cpu) {
diff --git a/Documentation/spi/spi-summary b/Documentation/spi/spi-summary
index 8bae2f0..0f5122e 100644
--- a/Documentation/spi/spi-summary
+++ b/Documentation/spi/spi-summary
@@ -215,7 +215,7 @@ So for example arch/.../mach-*/board-*.c files might have code like:
/* if your mach-* infrastructure doesn't support kernels that can
* run on multiple boards, pdata wouldn't benefit from "__init".
*/
- static struct mysoc_spi_data __init pdata = { ... };
+ static struct mysoc_spi_data __initdata pdata = { ... };
static __init board_init(void)
{
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