Revision f52afc93cd018fe6910133a05d44671192d1aeb0 authored by Jan Kara on 27 September 2018, 11:23:32 UTC, committed by Dan Williams on 27 September 2018, 17:56:15 UTC
When dax_lock_mapping_entry() has to sleep to obtain entry lock, it will
fail to unlock mapping->i_pages spinlock and thus immediately deadlock
against itself when retrying to grab the entry lock again. Fix the
problem by unlocking mapping->i_pages before retrying.
Fixes: c2a7d2a11552 ("filesystem-dax: Introduce dax_lock_mapping_entry()")
Reported-by: Barret Rhoden <brho@google.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
1 parent 6bf4ca7
| File | Mode | Size |
|---|---|---|
| i386 | ||
| x86_64 | ||
| 00-INDEX | -rw-r--r-- | 637 bytes |
| amd-memory-encryption.txt | -rw-r--r-- | 4.3 KB |
| boot.txt | -rw-r--r-- | 38.7 KB |
| earlyprintk.txt | -rw-r--r-- | 6.0 KB |
| entry_64.txt | -rw-r--r-- | 4.1 KB |
| exception-tables.txt | -rw-r--r-- | 13.0 KB |
| intel_mpx.txt | -rw-r--r-- | 10.9 KB |
| intel_rdt_ui.txt | -rw-r--r-- | 40.4 KB |
| kernel-stacks | -rw-r--r-- | 6.1 KB |
| microcode.txt | -rw-r--r-- | 3.9 KB |
| mtrr.txt | -rw-r--r-- | 11.6 KB |
| orc-unwinder.txt | -rw-r--r-- | 8.0 KB |
| pat.txt | -rw-r--r-- | 11.1 KB |
| protection-keys.txt | -rw-r--r-- | 3.3 KB |
| pti.txt | -rw-r--r-- | 8.8 KB |
| tlb.txt | -rw-r--r-- | 3.6 KB |
| topology.txt | -rw-r--r-- | 6.7 KB |
| usb-legacy-support.txt | -rw-r--r-- | 1.8 KB |
| zero-page.txt | -rw-r--r-- | 1.8 KB |
Computing file changes ...
