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fuse: restructure fuse_readpage()

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Move the code filling and sending read request to a separate function. Future
patches will use it for .write_begin -- partial modification of a page
requires reading the page from the storage very similarly to what fuse_readpage
does.

Signed-off-by: Maxim Patlasov <MPatlasov@parallels.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
This commit is contained in:
Maxim Patlasov 2013-10-10 17:11:25 +04:00 committed by Miklos Szeredi
parent e7cc133c37
commit 482fce55d2
1 changed files with 16 additions and 7 deletions
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23
fs/fuse/file.c
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@ -712,7 +712,7 @@ static void fuse_short_read(struct fuse_req *req, struct inode *inode,
}
}
static int fuse_readpage(struct file *file, struct page *page)
static int fuse_do_readpage(struct file *file, struct page *page)
{
struct fuse_io_priv io = { .async = 0, .file = file };
struct inode *inode = page->mapping->host;
@ -724,10 +724,6 @@ static int fuse_readpage(struct file *file, struct page *page)
u64 attr_ver;
int err;
err = -EIO;
if (is_bad_inode(inode))
goto out;
/*
* Page writeback can extend beyond the lifetime of the
* page-cache page, so make sure we read a properly synced
@ -736,9 +732,8 @@ static int fuse_readpage(struct file *file, struct page *page)
fuse_wait_on_page_writeback(inode, page->index);
req = fuse_get_req(fc, 1);
err = PTR_ERR(req);
if (IS_ERR(req))
goto out;
return PTR_ERR(req);
attr_ver = fuse_get_attr_version(fc);
@ -761,6 +756,20 @@ static int fuse_readpage(struct file *file, struct page *page)
}
fuse_put_request(fc, req);
return err;
}
static int fuse_readpage(struct file *file, struct page *page)
{
struct inode *inode = page->mapping->host;
int err;
err = -EIO;
if (is_bad_inode(inode))
goto out;
err = fuse_do_readpage(file, page);
fuse_invalidate_atime(inode);
out:
unlock_page(page);