86 lines
2.5 KiB
Diff
86 lines
2.5 KiB
Diff
diff -ru linux-2.6.28.10.orig/fs/fuse/dev.c linux-2.6.28.10/fs/fuse/dev.c
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--- linux-2.6.28.10.orig/fs/fuse/dev.c 2009-05-02 20:54:43.000000000 +0200
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+++ linux-2.6.28.10/fs/fuse/dev.c 2009-06-07 20:29:50.229816000 +0200
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@@ -525,6 +525,11 @@
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}
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}
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+#ifdef DCACHE_BUG
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+extern void (*fuse_flush_cache_all)(void);
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+extern void (*fuse_flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn);
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+#endif
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+
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/*
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* Get another pagefull of userspace buffer, and map it to kernel
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* address space, and lock request
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@@ -533,6 +538,9 @@
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{
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unsigned long offset;
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int err;
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+#ifdef DCACHE_BUG
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+ struct vm_area_struct *vma;
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+#endif
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unlock_request(cs->fc, cs->req);
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fuse_copy_finish(cs);
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@@ -544,14 +552,22 @@
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cs->nr_segs --;
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}
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down_read(¤t->mm->mmap_sem);
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+#ifndef DCACHE_BUG
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err = get_user_pages(current, current->mm, cs->addr, 1, cs->write, 0,
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&cs->pg, NULL);
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+#else
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+ err = get_user_pages(current, current->mm, cs->addr, 1, cs->write, 0,
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+ &cs->pg, &vma);
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+#endif
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up_read(¤t->mm->mmap_sem);
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if (err < 0)
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return err;
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BUG_ON(err != 1);
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offset = cs->addr % PAGE_SIZE;
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cs->mapaddr = kmap_atomic(cs->pg, KM_USER0);
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+#ifdef DCACHE_BUG
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+ fuse_flush_cache_page(vma, cs->addr, page_to_pfn(cs->pg));
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+#endif
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cs->buf = cs->mapaddr + offset;
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cs->len = min(PAGE_SIZE - offset, cs->seglen);
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cs->seglen -= cs->len;
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@@ -565,6 +581,11 @@
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{
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unsigned ncpy = min(*size, cs->len);
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if (val) {
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+#ifdef DCACHE_BUG
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+ // patch from mailing list, it is very important, otherwise,
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+ // can't mount, or ls mount point will hang
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+ fuse_flush_cache_all();
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+#endif
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if (cs->write)
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memcpy(cs->buf, *val, ncpy);
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else
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diff -ru linux-2.6.28.10.orig/fs/fuse/fuse_i.h linux-2.6.28.10/fs/fuse/fuse_i.h
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--- linux-2.6.28.10.orig/fs/fuse/fuse_i.h 2009-05-02 20:54:43.000000000 +0200
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+++ linux-2.6.28.10/fs/fuse/fuse_i.h 2009-06-06 16:34:54.814468000 +0200
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@@ -8,6 +8,7 @@
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#ifndef _FS_FUSE_I_H
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#define _FS_FUSE_I_H
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+#define DCACHE_BUG
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#include <linux/fuse.h>
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#include <linux/fs.h>
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diff -ru linux-2.6.28.10.orig/fs/fuse/inode.c linux-2.6.28.10/fs/fuse/inode.c
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--- linux-2.6.28.10.orig/fs/fuse/inode.c 2009-05-02 20:54:43.000000000 +0200
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+++ linux-2.6.28.10/fs/fuse/inode.c 2009-06-07 20:33:34.156611000 +0200
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@@ -1038,6 +1038,10 @@
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printk("fuse init (API version %i.%i)\n",
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FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION);
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+#ifdef DCACHE_BUG
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+printk("fuse init: DCACHE_BUG enabled\n");
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+#endif
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+
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INIT_LIST_HEAD(&fuse_conn_list);
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res = fuse_fs_init();
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if (res)
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