Commit 9de5be06 authored by Miklos Szeredi's avatar Miklos Szeredi

fuse: fix writepages on 32bit

Writepage requests were cropped to i_size & 0xffffffff, which meant that
mmaped writes to any file larger than 4G might be silently discarded.

Fix by storing the file size in a properly sized variable (loff_t instead
of size_t).
Reported-by: default avatarAntonio SJ Musumeci <trapexit@spawn.link>
Fixes: 6eaf4782 ("fuse: writepages: crop secondary requests")
Cc: <stable@vger.kernel.org> # v3.13
Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
parent 085b7755
...@@ -1586,7 +1586,7 @@ __acquires(fi->lock) ...@@ -1586,7 +1586,7 @@ __acquires(fi->lock)
{ {
struct fuse_conn *fc = get_fuse_conn(inode); struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_inode *fi = get_fuse_inode(inode); struct fuse_inode *fi = get_fuse_inode(inode);
size_t crop = i_size_read(inode); loff_t crop = i_size_read(inode);
struct fuse_req *req; struct fuse_req *req;
while (fi->writectr >= 0 && !list_empty(&fi->queued_writes)) { while (fi->writectr >= 0 && !list_empty(&fi->queued_writes)) {
......
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