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Diffstat (limited to 'fs/notify/fdinfo.c')
-rw-r--r--fs/notify/fdinfo.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/notify/fdinfo.c b/fs/notify/fdinfo.c
index 1161eabf11ee..9cc7eb863643 100644
--- a/fs/notify/fdinfo.c
+++ b/fs/notify/fdinfo.c
@@ -17,6 +17,7 @@
#include "fanotify/fanotify.h"
#include "fdinfo.h"
#include "fsnotify.h"
+#include "../internal.h"
#if defined(CONFIG_PROC_FS)
@@ -46,7 +47,12 @@ static void show_mark_fhandle(struct seq_file *m, struct inode *inode)
size = f->handle_bytes >> 2;
+ if (!super_trylock_shared(inode->i_sb))
+ return;
+
ret = exportfs_encode_fid(inode, (struct fid *)f->f_handle, &size);
+ up_read(&inode->i_sb->s_umount);
+
if ((ret == FILEID_INVALID) || (ret < 0))
return;