| commit | 62e9e4173da92227fd081dae1cb4bc2a8aaee176 | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sun, 18 Mar 2018 02:43:01 +0000 (17 19:43 -0700) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sun, 18 Mar 2018 02:43:01 +0000 (17 19:43 -0700) | ||
| tree | 371fb9fe39856a94c696ff16916e0a559f5538ba | treesnapshot (tar.gz zip) |
| parent | 1bef7707524ce5755a66555932471ef19a6dfa0d | commitdiff |
devfs - Fix a few more issues
* Fix a devfs_freep() race. VOP_RECLAIM generated by unrelated
system load (such as a 'du' which causes vnodes to recycle quickly)
can race a node teardown because devfs_freep() temporarily unlocks
devfs_lock across a vnode op.
* Instead of asserting, use the DEVFS_DESTROYED flag to check
for the race. The state will be stable for this particular race
due to the vnode lock.
Reported-by: multiple
* Fix a devfs_freep() race. VOP_RECLAIM generated by unrelated
system load (such as a 'du' which causes vnodes to recycle quickly)
can race a node teardown because devfs_freep() temporarily unlocks
devfs_lock across a vnode op.
* Instead of asserting, use the DEVFS_DESTROYED flag to check
for the race. The state will be stable for this particular race
due to the vnode lock.
Reported-by: multiple
| sys/sys/devfs.h | diffblobblamehistory | |
| sys/vfs/devfs/devfs_core.c | diffblobblamehistory | |
| sys/vfs/devfs/devfs_vnops.c | diffblobblamehistory |