diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-12-23 16:23:23 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-12-23 16:23:23 +0100 |
commit | 1ccedb7cdba6886939dd8b4c8f965a826f696e56 (patch) | |
tree | 0f5fc519a68faca5318c296315c9b6c502907056 /Documentation/filesystems | |
parent | a98f8fd24fb24fcb9a359553e64dd6aac5cf4279 (diff) | |
parent | 929096fe9ff1f4b3645cf3919527ab47e8d5e17c (diff) |
Merge commit 'v2.6.28-rc9' into x86/apic
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r-- | Documentation/filesystems/ocfs2.txt | 3 | ||||
-rw-r--r-- | Documentation/filesystems/proc.txt | 27 | ||||
-rw-r--r-- | Documentation/filesystems/ramfs-rootfs-initramfs.txt | 12 | ||||
-rw-r--r-- | Documentation/filesystems/xip.txt | 9 |
4 files changed, 38 insertions, 13 deletions
diff --git a/Documentation/filesystems/ocfs2.txt b/Documentation/filesystems/ocfs2.txt index 4340cc82579..67310fbbb7d 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 bcceb99b81d..bb1b0dd3bfc 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/filesystems/ramfs-rootfs-initramfs.txt b/Documentation/filesystems/ramfs-rootfs-initramfs.txt index 62fe9b1e089..a8273d5fad2 100644 --- a/Documentation/filesystems/ramfs-rootfs-initramfs.txt +++ b/Documentation/filesystems/ramfs-rootfs-initramfs.txt @@ -130,12 +130,12 @@ The 2.6 kernel build process always creates a gzipped cpio format initramfs archive and links it into the resulting kernel binary. By default, this archive is empty (consuming 134 bytes on x86). -The config option CONFIG_INITRAMFS_SOURCE (for some reason buried under -devices->block devices in menuconfig, and living in usr/Kconfig) can be used -to specify a source for the initramfs archive, which will automatically be -incorporated into the resulting binary. This option can point to an existing -gzipped cpio archive, a directory containing files to be archived, or a text -file specification such as the following example: +The config option CONFIG_INITRAMFS_SOURCE (in General Setup in menuconfig, +and living in usr/Kconfig) can be used to specify a source for the +initramfs archive, which will automatically be incorporated into the +resulting binary. This option can point to an existing gzipped cpio +archive, a directory containing files to be archived, or a text file +specification such as the following example: dir /dev 755 0 0 nod /dev/console 644 0 0 c 5 1 diff --git a/Documentation/filesystems/xip.txt b/Documentation/filesystems/xip.txt index 3cc4010521a..0466ee56927 100644 --- a/Documentation/filesystems/xip.txt +++ b/Documentation/filesystems/xip.txt @@ -39,10 +39,11 @@ The block device operation is optional, these block devices support it as of today: - dcssblk: s390 dcss block device driver -An address space operation named get_xip_page is used to retrieve reference -to a struct page. To address the target page, a reference to an address_space, -and a sector number is provided. A 3rd argument indicates whether the -function should allocate blocks if needed. +An address space operation named get_xip_mem is used to retrieve references +to a page frame number and a kernel address. To obtain these values a reference +to an address_space is provided. This function assigns values to the kmem and +pfn parameters. The third argument indicates whether the function should allocate +blocks if needed. This address space operation is mutually exclusive with readpage&writepage that do page cache read/write operations. |