In demand-read mode, fs using fscache for demand-read doesn't know the
exact file size of the data blob file, and the input @object_size
parameter of fscache_acquire_cookie() could be fake in this case.
Signed-off-by: Jeffle Xu <jeffl...@linux.alibaba.com>
---
fs/cachefiles/interface.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/fs/cachefiles/interface.c b/fs/cachefiles/interface.c
index 51c968cd00a6..b85051250cb7 100644
--- a/fs/cachefiles/interface.c
+++ b/fs/cachefiles/interface.c
@@ -110,6 +110,7 @@ static int cachefiles_adjust_size(struct cachefiles_object
*object)
{
struct iattr newattrs;
struct file *file = object->file;
+ struct cachefiles_cache *cache = object->volume->cache;
uint64_t ni_size;
loff_t oi_size;
int ret;
@@ -123,6 +124,9 @@ static int cachefiles_adjust_size(struct cachefiles_object
*object)
if (!file)
return -ENOBUFS;
+ if (cache->mode == CACHEFILES_MODE_DEMAND)
+ return 0;
+
oi_size = i_size_read(file_inode(file));
if (oi_size == ni_size)
return 0;
--
2.27.0
--
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