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Remove my changes to pagefile creation because they cause a hang for some people.

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svn path=/trunk/; revision=20163
This commit is contained in:
Brandon Turner 2005-12-14 12:41:38 +00:00
parent bc5692342a
commit fe84901940
1 changed files with 44 additions and 141 deletions
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115
reactos/subsys/smss/initpage.c
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@ -28,8 +28,6 @@
#define NDEBUG
#include <debug.h>
#define GIGABYTE (1024 * 1024 * 1024) /* One Gigabyte */
static NTSTATUS STDCALL
SmpPagingFilesQueryRoutine(PWSTR ValueName,
ULONG ValueType,
@ -41,26 +39,17 @@ SmpPagingFilesQueryRoutine(PWSTR ValueName,
UNICODE_STRING FileName;
LARGE_INTEGER InitialSize;
LARGE_INTEGER MaximumSize;
NTSTATUS Status = STATUS_SUCCESS;
NTSTATUS Status;
LPWSTR p;
WCHAR RootDriveLetter[5];
DPRINT("ValueName '%S' Type %lu Length %lu\n", ValueName, ValueType, ValueLength);
DPRINT("ValueData '%S'\n", (PWSTR)ValueData);
if (ValueType != REG_SZ)
{
return STATUS_INVALID_PARAMETER_2;
return(STATUS_SUCCESS);
}
if (!RtlDosPathNameToNtPathName_U ((LPWSTR)ValueData,
&FileName,
NULL,
NULL))
{
return STATUS_OBJECT_PATH_NOT_FOUND;
}
/*
* Format: "<path>[ <initial_size>[ <maximum_size>]]"
*/
@ -75,108 +64,22 @@ SmpPagingFilesQueryRoutine(PWSTR ValueName,
else
MaximumSize = InitialSize;
}
/* If there is only a file name or if initial and max are both 0
the system will pick the sizes. 10% and 20% for initial and max
respectivly. There is a max of 1 gig before it doesnt make it
bigger. */
if((InitialSize.QuadPart == 0 && MaximumSize.QuadPart == 0) || p == NULL)
else
{
FILE_FS_SIZE_INFORMATION FileFsSize;
IO_STATUS_BLOCK IoStatusBlock;
HANDLE hFile;
UNICODE_STRING NtPathU;
LARGE_INTEGER FreeBytes;
OBJECT_ATTRIBUTES ObjectAttributes;
InitialSize.QuadPart = 50 * 4096;
MaximumSize.QuadPart = 80 * 4096;
}
DPRINT("System managed pagefile...\n");
/* Make sure the path that is given for the file actually has the drive in it.
At this point if there is not file name, no sizes will be set therefore no page
file will be created */
if (wcslen(((PWSTR)ValueData)) > 2 &&
((PWSTR)ValueData)[1] == L':' &&
((PWSTR)ValueData)[2] == L'\\')
{
/* copy the drive letter, the colon and the slash,
tack a null on the end */
p = ((PWSTR)ValueData);
wcsncpy(RootDriveLetter,p,3);
wcscat(RootDriveLetter,L"\0");
DPRINT("At least X:\\...%S\n",RootDriveLetter);
if (!RtlDosPathNameToNtPathName_U((LPWSTR)RootDriveLetter,
&NtPathU,
if (!RtlDosPathNameToNtPathName_U ((LPWSTR)ValueData,
&FileName,
NULL,
NULL))
{
DPRINT("Invalid path\n");
return STATUS_OBJECT_PATH_NOT_FOUND;
}
InitializeObjectAttributes(&ObjectAttributes,
&NtPathU,
FILE_READ_ATTRIBUTES,
NULL,
NULL);
/* Get a handle to the root to find the free space on the drive */
Status = NtCreateFile (&hFile,
FILE_GENERIC_READ,
&ObjectAttributes,
&IoStatusBlock,
NULL,
0,
FILE_SHARE_READ,
FILE_OPEN,
0,
NULL,
0);
RtlFreeUnicodeString(&NtPathU);
if (!NT_SUCCESS(Status))
{
DPRINT ("Invalid handle\n");
return Status;
}
Status = NtQueryVolumeInformationFile(hFile,
&IoStatusBlock,
&FileFsSize,
sizeof(FILE_FS_SIZE_INFORMATION),
FileFsSizeInformation);
FreeBytes.QuadPart = FileFsSize.BytesPerSector *
FileFsSize.SectorsPerAllocationUnit *
FileFsSize.AvailableAllocationUnits.QuadPart;
DPRINT ("Free:%d\n",FreeBytes.QuadPart);
/* Set by percentage */
InitialSize.QuadPart = FreeBytes.QuadPart / 10;
MaximumSize.QuadPart = FreeBytes.QuadPart / 5;
/* The page file is more then a gig, size it down */
if (InitialSize.QuadPart > GIGABYTE)
{
InitialSize.QuadPart = GIGABYTE;
MaximumSize.QuadPart = GIGABYTE;
}
ZwClose(hFile);
}
else
{
/* No page file will be created,
but we return succes because that
is what the setting wants */
return (STATUS_SUCCESS);
}
}
DPRINT("SMSS: Created paging file %wZ with size %dKB\n",
&FileName, InitialSize.QuadPart / 1024);
Status = NtCreatePagingFile(&FileName,
&InitialSize,
&MaximumSize,
@ -184,7 +87,7 @@ SmpPagingFilesQueryRoutine(PWSTR ValueName,
RtlFreeUnicodeString(&FileName);
return Status;
return(STATUS_SUCCESS);
}