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fuse-increase-readdirplus-bufsiz.patch
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zack
Nov 4 2020, 9:09 AM
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fuse-increase-readdirplus-bufsiz.patch
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Index: linux-5.9.1/fs/fuse/readdir.c
===================================================================
--- linux-5.9.1.orig/fs/fuse/readdir.c 2020-11-04 00:44:46.705715697 +0100
+++ linux-5.9.1/fs/fuse/readdir.c 2020-11-04 00:44:46.701715653 +0100
@@ -318,30 +318,27 @@
{
int plus;
ssize_t res;
- struct page *page;
+ size_t bufsize = 32768;
+ void *buf;
struct inode *inode = file_inode(file);
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_io_args ia = {};
struct fuse_args_pages *ap = &ia.ap;
- struct fuse_page_desc desc = { .length = PAGE_SIZE };
u64 attr_version = 0;
bool locked;
- page = alloc_page(GFP_KERNEL);
- if (!page)
+ buf = vmalloc(bufsize);
+ if (!buf)
return -ENOMEM;
plus = fuse_use_readdirplus(inode, ctx);
- ap->args.out_pages = true;
- ap->num_pages = 1;
- ap->pages = &page;
- ap->descs = &desc;
+ ap->args.out_args[0].value = buf;
if (plus) {
attr_version = fuse_get_attr_version(fc);
- fuse_read_args_fill(&ia, file, ctx->pos, PAGE_SIZE,
+ fuse_read_args_fill(&ia, file, ctx->pos, bufsize,
FUSE_READDIRPLUS);
} else {
- fuse_read_args_fill(&ia, file, ctx->pos, PAGE_SIZE,
+ fuse_read_args_fill(&ia, file, ctx->pos, bufsize,
FUSE_READDIR);
}
locked = fuse_lock_inode(inode);
@@ -354,15 +351,14 @@
if (ff->open_flags & FOPEN_CACHE_DIR)
fuse_readdir_cache_end(file, ctx->pos);
} else if (plus) {
- res = parse_dirplusfile(page_address(page), res,
+ res = parse_dirplusfile(buf, res,
file, ctx, attr_version);
} else {
- res = parse_dirfile(page_address(page), res, file,
- ctx);
+ res = parse_dirfile(buf, res, file, ctx);
}
}
- __free_page(page);
+ vfree(buf);
fuse_invalidate_atime(inode);
return res;
}

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zack changed the visibility from "All Users" to "Public (No Login Required)".Nov 4 2020, 9:09 AM
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