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-rw-r--r--fs/fuse/dir.c8
-rw-r--r--fs/fuse/file.c15
-rw-r--r--fs/fuse/fuse_i.h1
-rw-r--r--fs/fuse/inode.c3
4 files changed, 27 insertions, 0 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index d9b977c0f38d..2798fbe8d001 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -738,11 +738,19 @@ static int fuse_symlink(struct user_namespace *mnt_userns, struct inode *dir,
return create_new_entry(fm, &args, dir, entry, S_IFLNK);
}
+void fuse_flush_time_update(struct inode *inode)
+{
+ int err = sync_inode_metadata(inode, 1);
+
+ mapping_set_error(inode->i_mapping, err);
+}
+
void fuse_update_ctime(struct inode *inode)
{
if (!IS_NOCMTIME(inode)) {
inode->i_ctime = current_time(inode);
mark_inode_dirty_sync(inode);
+ fuse_flush_time_update(inode);
}
}
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 11404f8c21c7..5c5ed58d91a7 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1848,6 +1848,17 @@ int fuse_write_inode(struct inode *inode, struct writeback_control *wbc)
struct fuse_file *ff;
int err;
+ /*
+ * Inode is always written before the last reference is dropped and
+ * hence this should not be reached from reclaim.
+ *
+ * Writing back the inode from reclaim can deadlock if the request
+ * processing itself needs an allocation. Allocations triggering
+ * reclaim while serving a request can't be prevented, because it can
+ * involve any number of unrelated userspace processes.
+ */
+ WARN_ON(wbc->for_reclaim);
+
ff = __fuse_write_file_get(fi);
err = fuse_flush_times(inode, ff);
if (ff)
@@ -3002,6 +3013,8 @@ out:
if (lock_inode)
inode_unlock(inode);
+ fuse_flush_time_update(inode);
+
return err;
}
@@ -3111,6 +3124,8 @@ out:
inode_unlock(inode_out);
file_accessed(file_in);
+ fuse_flush_time_update(inode_out);
+
return err;
}
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index f55f9f94b1a4..a59e36c7deae 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -1148,6 +1148,7 @@ int fuse_allow_current_process(struct fuse_conn *fc);
u64 fuse_lock_owner_id(struct fuse_conn *fc, fl_owner_t id);
+void fuse_flush_time_update(struct inode *inode);
void fuse_update_ctime(struct inode *inode);
int fuse_update_attributes(struct inode *inode, struct file *file);
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 12d49a1914e8..2f999d38c9b4 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -118,6 +118,9 @@ static void fuse_evict_inode(struct inode *inode)
{
struct fuse_inode *fi = get_fuse_inode(inode);
+ /* Will write inode on close/munmap and in all other dirtiers */
+ WARN_ON(inode->i_state & I_DIRTY_INODE);
+
truncate_inode_pages_final(&inode->i_data);
clear_inode(inode);
if (inode->i_sb->s_flags & SB_ACTIVE) {