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diff -urp linux-2.6.8.1-r7/drivers/block/scsi_ioctl.c linux-2.6.8.1-r8/drivers/block/scsi_ioctl.c
--- linux-2.6.8.1-r7/drivers/block/scsi_ioctl.c 2004-08-14 11:56:23.000000000 +0100
+++ linux-2.6.8.1-r8/drivers/block/scsi_ioctl.c 2005-01-09 12:09:55.345308528 +0000
@@ -304,7 +304,8 @@ static int sg_scsi_ioctl(struct file *fi
struct gendisk *bd_disk, Scsi_Ioctl_Command __user *sic)
{
struct request *rq;
- int err, in_len, out_len, bytes, opcode, cmdlen;
+ unsigned int in_len, out_len, bytes, opcode, cmdlen;
+ int err;
char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE];
/*
diff -urp linux-2.6.8.1-r7/drivers/char/moxa.c linux-2.6.8.1-r8/drivers/char/moxa.c
--- linux-2.6.8.1-r7/drivers/char/moxa.c 2005-01-09 12:06:21.000000000 +0000
+++ linux-2.6.8.1-r8/drivers/char/moxa.c 2005-01-09 12:09:55.327311264 +0000
@@ -1687,6 +1687,8 @@ int MoxaDriverIoctl(unsigned int cmd, un
return -EFAULT;
if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
return -EINVAL;
+ if(dltmp.len < 0 || dltmp.len > sizeof(moxaBuff))
+ return -EINVAL;
switch(cmd)
{
@@ -2841,8 +2843,6 @@ static int moxaload320b(int cardno, unsi
unsigned long baseAddr;
int i;
- if(len > sizeof(moxaBuff))
- return -EINVAL;
if(copy_from_user(moxaBuff, tmp, len))
return -EFAULT;
baseAddr = moxaBaseAddr[cardno];
diff -urp linux-2.6.8.1-r7/drivers/char/random.c linux-2.6.8.1-r8/drivers/char/random.c
--- linux-2.6.8.1-r7/drivers/char/random.c 2004-08-14 11:54:48.000000000 +0100
+++ linux-2.6.8.1-r8/drivers/char/random.c 2005-01-09 12:09:55.358306552 +0000
@@ -1917,7 +1917,7 @@ static int poolsize_strategy(ctl_table *
void __user *oldval, size_t __user *oldlenp,
void __user *newval, size_t newlen, void **context)
{
- int len;
+ size_t len;
sysctl_poolsize = random_state->poolinfo.POOLBYTES;
diff -urp linux-2.6.8.1-r7/include/linux/writeback.h linux-2.6.8.1-r8/include/linux/writeback.h
--- linux-2.6.8.1-r7/include/linux/writeback.h 2004-08-14 11:54:49.000000000 +0100
+++ linux-2.6.8.1-r8/include/linux/writeback.h 2005-01-09 12:09:55.000000000 +0000
@@ -74,6 +74,7 @@ static inline void wait_on_inode(struct
int wakeup_bdflush(long nr_pages);
void laptop_io_completion(void);
void laptop_sync_completion(void);
+void throttle_vm_writeout(void);
/* These are exported to sysctl. */
extern int dirty_background_ratio;
diff -urp linux-2.6.8.1-r7/mm/mmap.c linux-2.6.8.1-r8/mm/mmap.c
--- linux-2.6.8.1-r7/mm/mmap.c 2005-01-09 12:06:23.000000000 +0000
+++ linux-2.6.8.1-r8/mm/mmap.c 2005-01-09 12:09:55.000000000 +0000
@@ -1223,6 +1223,13 @@ int expand_stack(struct vm_area_struct *
vm_unacct_memory(grow);
return -ENOMEM;
}
+ if ((vma->vm_flags & VM_LOCKED) && !capable(CAP_IPC_LOCK) &&
+ ((vma->vm_mm->locked_vm + grow) << PAGE_SHIFT) >
+ current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur) {
+ anon_vma_unlock(vma);
+ vm_unacct_memory(grow);
+ return -ENOMEM;
+ }
vma->vm_end = address;
vma->vm_mm->total_vm += grow;
if (vma->vm_flags & VM_LOCKED)
@@ -1284,6 +1291,13 @@ int expand_stack(struct vm_area_struct *
vm_unacct_memory(grow);
return -ENOMEM;
}
+ if ((vma->vm_flags & VM_LOCKED) && !capable(CAP_IPC_LOCK) &&
+ ((vma->vm_mm->locked_vm + grow) << PAGE_SHIFT) >
+ current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur) {
+ anon_vma_unlock(vma);
+ vm_unacct_memory(grow);
+ return -ENOMEM;
+ }
vma->vm_start = address;
vma->vm_pgoff -= grow;
vma->vm_mm->total_vm += grow;
diff -urp linux-2.6.8.1-r7/mm/page-writeback.c linux-2.6.8.1-r8/mm/page-writeback.c
--- linux-2.6.8.1-r7/mm/page-writeback.c 2004-08-14 11:55:47.000000000 +0100
+++ linux-2.6.8.1-r8/mm/page-writeback.c 2005-01-09 12:09:55.000000000 +0000
@@ -276,6 +276,28 @@ void balance_dirty_pages_ratelimited(str
}
EXPORT_SYMBOL(balance_dirty_pages_ratelimited);
+void throttle_vm_writeout(void)
+{
+ struct writeback_state wbs;
+ long background_thresh;
+ long dirty_thresh;
+
+ for ( ; ; ) {
+ get_dirty_limits(&wbs, &background_thresh, &dirty_thresh);
+
+ /*
+ * Boost the allowable dirty threshold a bit for page
+ * allocators so they don't get DoS'ed by heavy writers
+ */
+ dirty_thresh += dirty_thresh / 10; /* wheeee... */
+
+ if (wbs.nr_unstable + wbs.nr_writeback <= dirty_thresh)
+ break;
+ blk_congestion_wait(WRITE, HZ/10);
+ }
+}
+
+
/*
* writeback at least _min_pages, and keep writing until the amount of dirty
* memory is less than the background threshold, or until we're all clean.
diff -urp linux-2.6.8.1-r7/mm/vmscan.c linux-2.6.8.1-r8/mm/vmscan.c
--- linux-2.6.8.1-r7/mm/vmscan.c 2004-08-14 11:54:50.000000000 +0100
+++ linux-2.6.8.1-r8/mm/vmscan.c 2005-01-09 12:10:52.000000000 +0000
@@ -362,9 +362,6 @@ static int shrink_list(struct list_head
BUG_ON(PageActive(page));
- if (PageWriteback(page))
- goto keep_locked;
-
sc->nr_scanned++;
/* Double the slab pressure for mapped and swapcache pages */
if (page_mapped(page) || PageSwapCache(page))
@@ -841,6 +838,8 @@ shrink_zone(struct zone *zone, struct sc
break;
}
}
+
+ throttle_vm_writeout();
}
/*
|
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