Re: [Patch] deadlock on write in tmpfs

Hi Stephen, On Tue, 1 May 2001, Stephen C. Tweedie wrote: > If the locking is for a completely different reason, then a > different semaphore is quite appropriate. In this case you're > trying to lock the shm internal info structures, which is quite > different from the sort of inode locking whi

Re: [Patch] deadlock on write in tmpfs

hi, On Tue, May 01, 2001 at 03:39:47PM +0200, Christoph Rohland wrote: > > tmpfs deadlocks when writing into a file from a mapping of the same > file. > > So I see two choices: > > 1) Do not serialise the whole of shmem_getpage_locked but protect >critical pathes with the spinlock and do

[Patch] deadlock on write in tmpfs

Hi Linus and Stephen, tmpfs deadlocks when writing into a file from a mapping of the same file. The problem is the following: - shmem_file_write may call shmem_no_page and calls shmem_getpage_locked later, - shmem_no_page calls shmem_getpage_locked - shmem_getpage_locked may call shmem_write