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authorMiklos Szeredi <mszeredi@suse.cz>2011-02-25 13:44:58 (GMT)
committerMiklos Szeredi <mszeredi@suse.cz>2011-02-25 13:44:58 (GMT)
commit5a18ec176c934ca1bc9dc61580a5e0e90a9b5733 (patch)
tree6995509f59166fff90ce240ce72e3858f61ac101 /fs/fuse/fuse_i.h
parent4662db446190ddef8fbab024f72dee77dd04b8f2 (diff)
downloadlinux-5a18ec176c934ca1bc9dc61580a5e0e90a9b5733.tar.xz
fuse: fix hang of single threaded fuseblk filesystem
Single threaded NTFS-3G could get stuck if a delayed RELEASE reply triggered a DESTROY request via path_put(). Fix this by a) making RELEASE requests synchronous, whenever possible, on fuseblk filesystems b) if not possible (triggered by an asynchronous read/write) then do the path_put() in a separate thread with schedule_work(). Reported-by: Oliver Neukum <oneukum@suse.de> Cc: stable@kernel.org Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Diffstat (limited to 'fs/fuse/fuse_i.h')
-rw-r--r--fs/fuse/fuse_i.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index ae5744a..d428694 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -21,6 +21,7 @@
#include <linux/rwsem.h>
#include <linux/rbtree.h>
#include <linux/poll.h>
+#include <linux/workqueue.h>
/** Max number of pages that can be used in a single read request */
#define FUSE_MAX_PAGES_PER_REQ 32
@@ -262,7 +263,10 @@ struct fuse_req {
/** Data for asynchronous requests */
union {
struct {
- struct fuse_release_in in;
+ union {
+ struct fuse_release_in in;
+ struct work_struct work;
+ };
struct path path;
} release;
struct fuse_init_in init_in;