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brcm47xx: add workaround for fuse again.

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This closes #4754

SVN-Revision: 26141
This commit is contained in:
Hauke Mehrtens 2011-03-13 19:25:24 +00:00
parent c33f2efbb2
commit 537c6017cc
4 changed files with 94 additions and 10 deletions
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6
target/linux/brcm47xx/patches-2.6.36/301-kmod-fuse-dcache-bug-r4k.patch
View file

@ -18,7 +18,7 @@
unsigned long addr, unsigned long pfn)
{
struct flush_cache_page_args args;
@@ -1469,3 +1469,11 @@ void __cpuinit r4k_cache_init(void)
@@ -1469,3 +1469,7 @@ void __cpuinit r4k_cache_init(void)
coherency_setup();
#endif
}
@ -26,7 +26,3 @@
+/* fuse package DCACHE BUG patch exports */
+void (*fuse_flush_cache_all)(void) = r4k___flush_cache_all;
+EXPORT_SYMBOL(fuse_flush_cache_all);
+
+void (*fuse_flush_cache_page)(struct vm_area_struct *vma, unsigned long page,
+ unsigned long pfn) = r4k_flush_cache_page;
+EXPORT_SYMBOL(fuse_flush_cache_page);

46
target/linux/brcm47xx/patches-2.6.36/302-kmod-fuse-dcache-bug-fuse.patch Normal file
View file

@ -0,0 +1,46 @@
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -639,11 +639,20 @@ static int fuse_copy_fill(struct fuse_co
return lock_request(cs->fc, cs->req);
}
+#ifdef DCACHE_BUG
+extern void (*fuse_flush_cache_all)(void);
+#endif
+
/* Do as much copy to/from userspace buffer as we can */
static int fuse_copy_do(struct fuse_copy_state *cs, void **val, unsigned *size)
{
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
+ fuse_flush_cache_all();
+#endif
if (cs->write)
memcpy(cs->buf, *val, ncpy);
else
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -8,6 +8,7 @@
#ifndef _FS_FUSE_I_H
#define _FS_FUSE_I_H
+#define DCACHE_BUG
#include <linux/fuse.h>
#include <linux/fs.h>
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -1203,6 +1203,10 @@ static int __init fuse_init(void)
printk(KERN_INFO "fuse init (API version %i.%i)\n",
FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION);
+#ifdef DCACHE_BUG
+ printk("fuse init DCACHE_BUG workaround enabled\n");
+#endif
+
INIT_LIST_HEAD(&fuse_conn_list);
res = fuse_fs_init();
if (res)

6
target/linux/brcm47xx/patches-2.6.37/301-kmod-fuse-dcache-bug-r4k.patch
View file

@ -18,7 +18,7 @@
unsigned long addr, unsigned long pfn)
{
struct flush_cache_page_args args;
@@ -1468,3 +1468,11 @@ void __cpuinit r4k_cache_init(void)
@@ -1468,3 +1468,7 @@ void __cpuinit r4k_cache_init(void)
coherency_setup();
#endif
}
@ -26,7 +26,3 @@
+/* fuse package DCACHE BUG patch exports */
+void (*fuse_flush_cache_all)(void) = r4k___flush_cache_all;
+EXPORT_SYMBOL(fuse_flush_cache_all);
+
+void (*fuse_flush_cache_page)(struct vm_area_struct *vma, unsigned long page,
+ unsigned long pfn) = r4k_flush_cache_page;
+EXPORT_SYMBOL(fuse_flush_cache_page);

46
target/linux/brcm47xx/patches-2.6.37/302-kmod-fuse-dcache-bug-fuse.patch Normal file
View file

@ -0,0 +1,46 @@
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -639,11 +639,20 @@ static int fuse_copy_fill(struct fuse_co
return lock_request(cs->fc, cs->req);
}
+#ifdef DCACHE_BUG
+extern void (*fuse_flush_cache_all)(void);
+#endif
+
/* Do as much copy to/from userspace buffer as we can */
static int fuse_copy_do(struct fuse_copy_state *cs, void **val, unsigned *size)
{
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
+ fuse_flush_cache_all();
+#endif
if (cs->write)
memcpy(cs->buf, *val, ncpy);
else
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -8,6 +8,7 @@
#ifndef _FS_FUSE_I_H
#define _FS_FUSE_I_H
+#define DCACHE_BUG
#include <linux/fuse.h>
#include <linux/fs.h>
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -1202,6 +1202,10 @@ static int __init fuse_init(void)
printk(KERN_INFO "fuse init (API version %i.%i)\n",
FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION);
+#ifdef DCACHE_BUG
+ printk("fuse init DCACHE_BUG workaround enabled\n");
+#endif
+
INIT_LIST_HEAD(&fuse_conn_list);
res = fuse_fs_init();
if (res)