1 files changed, 73 insertions, 0 deletions
diff --git a/package/fuse/patches-kernel24/113-DCACHE_BUG.patch b/package/fuse/patches-kernel24/113-DCACHE_BUG.patch
new file mode 100644
index 000000000..da0d27cd2
--- /dev/null
+++ b/package/fuse/patches-kernel24/113-DCACHE_BUG.patch
@@ -0,0 +1,73 @@
+--- a/kernel/dev.c
++++ b/kernel/dev.c
+@@ -512,6 +512,9 @@ static int fuse_copy_fill(struct fuse_co
+ {
+ 	unsigned long offset;
+ 	int err;
++#ifdef DCACHE_BUG
++	struct vm_area_struct *vma;
++#endif
+ 
+ 	unlock_request(cs->req);
+ 	fuse_copy_finish(cs);
+@@ -523,14 +526,22 @@ static int fuse_copy_fill(struct fuse_co
+ 		cs->nr_segs --;
+ 	}
+ 	down_read(&current->mm->mmap_sem);
++#ifndef DCACHE_BUG
+ 	err = get_user_pages(current, current->mm, cs->addr, 1, cs->write, 0,
+ 			     &cs->pg, NULL);
++#else
++	err = get_user_pages(current, current->mm, cs->addr, 1, cs->write, 0,
++			     &cs->pg, &vma);
++#endif
+ 	up_read(&current->mm->mmap_sem);
+ 	if (err < 0)
+ 		return err;
+ 	BUG_ON(err != 1);
+ 	offset = cs->addr % PAGE_SIZE;
+ 	cs->mapaddr = kmap_atomic(cs->pg, KM_USER0);
++#ifdef DCACHE_BUG
++	r4k_flush_cache_page(vma, cs->addr); 
++#endif
+ 	cs->buf = cs->mapaddr + offset;
+ 	cs->len = min(PAGE_SIZE - offset, cs->seglen);
+ 	cs->seglen -= cs->len;
+@@ -545,6 +556,11 @@ static inline int fuse_copy_do(struct fu
+ {
+ 	unsigned ncpy = min(*size, cs->len);
+ 	if (val) {
++#ifdef DCACHE_BUG
++		// patch from mailing list, it is very important, otherwise,
++		// can't mount, or ls mount point will hang
++		flush_cache_all();
++#endif
+ 		if (cs->write)
+ 			memcpy(cs->buf, *val, ncpy);
+ 		else
+--- a/kernel/fuse_i.h
++++ b/kernel/fuse_i.h
+@@ -45,6 +45,10 @@
+ #  endif
+ #endif
+ 
++//#if defined(__arm__) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
++#define DCACHE_BUG
++//#endif
++
+ #include "config.h"
+ #ifndef KERNEL_2_6
+ #  include <linux/config.h>
+--- a/kernel/inode.c
++++ b/kernel/inode.c
+@@ -739,6 +739,10 @@ static int __init fuse_init(void)
+ 	printk("fuse distribution version: %s\n", FUSE_VERSION);
+ #endif
+ 
++#ifdef DCACHE_BUG
++printk("fuse init: DCACHE_BUG enabled\n");
++#endif
++
+ 	spin_lock_init(&fuse_lock);
+ 	res = fuse_fs_init();
+ 	if (res)