Miklos Szeredi 6dbbcb1205 [fuse] fix deadlock between fuse_put_super() and request_end(), try #2 ...

A deadlock was possible, when the last reference to the superblock was
held due to a background request containing a file reference.

Releasing the file would release the vfsmount which in turn would
release the superblock.  Since sbput_sem is held during the fput() and
fuse_put_super() tries to acquire this same semaphore, a deadlock
results.

The solution is to move the fput() outside the region protected by
sbput_sem.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>

2006-04-26 10:49:06 +02:00

24 KiB

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