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 |
|---|---|---|
| busses | ||
| muxes | ||
| DMA-considerations | -rw-r--r-- | 3.6 KB |
| dev-interface | -rw-r--r-- | 8.4 KB |
| fault-codes | -rw-r--r-- | 4.9 KB |
| functionality | -rw-r--r-- | 6.0 KB |
| gpio-fault-injection | -rw-r--r-- | 3.9 KB |
| i2c-protocol | -rw-r--r-- | 3.0 KB |
| i2c-stub | -rw-r--r-- | 2.3 KB |
| i2c-topology | -rw-r--r-- | 14.9 KB |
| instantiating-devices | -rw-r--r-- | 9.5 KB |
| old-module-parameters | -rw-r--r-- | 1.9 KB |
| slave-eeprom-backend | -rw-r--r-- | 476 bytes |
| slave-interface | -rw-r--r-- | 7.6 KB |
| smbus-protocol | -rw-r--r-- | 9.4 KB |
| summary | -rw-r--r-- | 1.9 KB |
| ten-bit-addresses | -rw-r--r-- | 1.5 KB |
| upgrading-clients | -rw-r--r-- | 6.8 KB |
| writing-clients | -rw-r--r-- | 15.0 KB |
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