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authorRandy Dunlap <randy.dunlap@oracle.com>2007-07-15 23:40:52 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 09:05:46 -0700
commite73a75fa7f062b52d015f1c961685dcaac57f710 (patch)
treede9c45f6a3c59651f8cea516f88cd1f7f8e31855 /Documentation/vm
parent5216184571946b8bbf06f0cd630c7754190fdd1a (diff)
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hugetlbfs: use lib/parser, fix docs
Use lib/parser.c to parse hugetlbfs mount options. Correct docs in hugetlbpage.txt. old size of hugetlbfs_fill_super: 675 bytes new size of hugetlbfs_fill_super: 686 bytes (hugetlbfs_parse_options() is inlined) Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: Adam Litke <agl@us.ibm.com> Acked-by: William Lee Irwin III <wli@holomorphy.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/vm')
-rw-r--r--Documentation/vm/hugetlbpage.txt10
1 files changed, 5 insertions, 5 deletions
diff --git a/Documentation/vm/hugetlbpage.txt b/Documentation/vm/hugetlbpage.txt
index 687104bfd09a..51ccc48aa763 100644
--- a/Documentation/vm/hugetlbpage.txt
+++ b/Documentation/vm/hugetlbpage.txt
@@ -77,8 +77,9 @@ If the user applications are going to request hugepages using mmap system
call, then it is required that system administrator mount a file system of
type hugetlbfs:
- mount none /mnt/huge -t hugetlbfs <uid=value> <gid=value> <mode=value>
- <size=value> <nr_inodes=value>
+ mount -t hugetlbfs \
+ -o uid=<value>,gid=<value>,mode=<value>,size=<value>,nr_inodes=<value> \
+ none /mnt/huge
This command mounts a (pseudo) filesystem of type hugetlbfs on the directory
/mnt/huge. Any files created on /mnt/huge uses hugepages. The uid and gid
@@ -88,11 +89,10 @@ mode of root of file system to value & 0777. This value is given in octal.
By default the value 0755 is picked. The size option sets the maximum value of
memory (huge pages) allowed for that filesystem (/mnt/huge). The size is
rounded down to HPAGE_SIZE. The option nr_inodes sets the maximum number of
-inodes that /mnt/huge can use. If the size or nr_inodes options are not
+inodes that /mnt/huge can use. If the size or nr_inodes option is not
provided on command line then no limits are set. For size and nr_inodes
options, you can use [G|g]/[M|m]/[K|k] to represent giga/mega/kilo. For
-example, size=2K has the same meaning as size=2048. An example is given at
-the end of this document.
+example, size=2K has the same meaning as size=2048.
read and write system calls are not supported on files that reside on hugetlb
file systems.