From: Miklos Szeredi <mszeredi@redhat.com>
Date: Fri, 22 Oct 2021 17:03:03 +0200
Subject: fuse: fix attr version comparison in fuse_read_update_size()
Git-commit: 484ce65715b06aead8c4901f01ca32c5a240bc71
Patch-mainline: v5.16-rc1
References: bsc#1211807
A READ request returning a short count is taken as indication of EOF, and
the cached file size is modified accordingly.
Fix the attribute version checking to allow for changes to fc->attr_version
on other inodes.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Acked-by: Luís Henriques <lhenriques@suse.de>
---
fs/fuse/file.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index c3fd88da2a0b..ddd563fda648 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -787,7 +787,7 @@ static void fuse_read_update_size(struct inode *inode, loff_t size,
struct fuse_inode *fi = get_fuse_inode(inode);
spin_lock(&fi->lock);
- if (attr_ver == fi->attr_version && size < inode->i_size &&
+ if (attr_ver >= fi->attr_version && size < inode->i_size &&
!test_bit(FUSE_I_SIZE_UNSTABLE, &fi->state)) {
fi->attr_version = atomic64_inc_return(&fc->attr_version);
i_size_write(inode, size);