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author | Michael Büsch <mb@bu3sch.de> | 2010-01-07 16:06:05 +0000 |
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committer | Michael Büsch <mb@bu3sch.de> | 2010-01-07 16:06:05 +0000 |
commit | dee16bb67ae841d8340492b7ce99155886d2dca1 (patch) | |
tree | 3834515bb4783f3c43bd1fe9852ec8fab7c5dfac /target/linux/brcm47xx/patches-2.6.32/302-kmod-fuse-dcache-bug-fuse.patch | |
parent | 210ef07a746d17eed1a3c0a5fddb79607d2e1dc2 (diff) | |
download | master-187ad058-dee16bb67ae841d8340492b7ce99155886d2dca1.tar.gz master-187ad058-dee16bb67ae841d8340492b7ce99155886d2dca1.tar.bz2 master-187ad058-dee16bb67ae841d8340492b7ce99155886d2dca1.zip |
bcm47xx: Add basic 2.6.32 support.
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19062 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/brcm47xx/patches-2.6.32/302-kmod-fuse-dcache-bug-fuse.patch')
-rw-r--r-- | target/linux/brcm47xx/patches-2.6.32/302-kmod-fuse-dcache-bug-fuse.patch | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.32/302-kmod-fuse-dcache-bug-fuse.patch b/target/linux/brcm47xx/patches-2.6.32/302-kmod-fuse-dcache-bug-fuse.patch new file mode 100644 index 0000000000..79515d4449 --- /dev/null +++ b/target/linux/brcm47xx/patches-2.6.32/302-kmod-fuse-dcache-bug-fuse.patch @@ -0,0 +1,82 @@ +--- a/fs/fuse/dev.c ++++ b/fs/fuse/dev.c +@@ -527,6 +527,11 @@ static void fuse_copy_finish(struct fuse + } + } + ++#ifdef DCACHE_BUG ++extern void (*fuse_flush_cache_all)(void); ++extern void (*fuse_flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn); ++#endif ++ + /* + * Get another pagefull of userspace buffer, and map it to kernel + * address space, and lock request +@@ -535,6 +540,9 @@ 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->fc, cs->req); + fuse_copy_finish(cs); +@@ -546,14 +554,22 @@ static int fuse_copy_fill(struct fuse_co + cs->nr_segs--; + } + down_read(¤t->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(¤t->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 ++ fuse_flush_cache_page(vma, cs->addr, page_to_pfn(cs->pg)); ++#endif + cs->buf = cs->mapaddr + offset; + cs->len = min(PAGE_SIZE - offset, cs->seglen); + cs->seglen -= cs->len; +@@ -567,6 +583,11 @@ static int fuse_copy_do(struct fuse_copy + { + 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 +@@ -1055,6 +1055,10 @@ 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 enabled\n"); ++#endif ++ + INIT_LIST_HEAD(&fuse_conn_list); + res = fuse_fs_init(); + if (res) |