find attached the announced patch for fuse.

[openwrt/svn-archive/archive.git] / package / fuse / patches-kernel24 / 113-DCACHE_BUG.patch

diff --git a/package/fuse/patches-kernel24/113-DCACHE_BUG.patch b/package/fuse/patches-kernel24/113-DCACHE_BUG.patch
new file mode 100644 (file)
index 0000000..da0d27c
--- /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)