Brian Behlendorf
abd39a8289
Fix zio_execute() deadlock
...
To avoid deadlocking the system it is crucial that all memory
allocations performed in the zio_execute() call path are marked
KM_PUSHPAGE (GFP_NOFS). This ensures that while a z_wr_iss
thread is processing the syncing transaction group it does
not re-enter the filesystem code and deadlock on itself.
Call Trace:
[<ffffffffa02580e8>] cv_wait_common+0x78/0xe0 [spl]
[<ffffffffa0347bab>] txg_wait_open+0x7b/0xa0 [zfs]
[<ffffffffa030e73d>] dmu_tx_wait+0xed/0xf0 [zfs]
[<ffffffffa0376a49>] zfs_putpage+0x219/0x360 [zfs]
[<ffffffffa038d75e>] zpl_putpage+0x1e/0x60 [zfs]
[<ffffffffa038d7b2>] zpl_writepage+0x12/0x20 [zfs]
[<ffffffff8115f907>] writeout+0xa7/0xd0
[<ffffffff8115fa6b>] move_to_new_page+0x13b/0x170
[<ffffffff8115fed4>] migrate_pages+0x434/0x4c0
[<ffffffff811559ab>] compact_zone+0x4fb/0x780
[<ffffffff81155ed1>] compact_zone_order+0xa1/0xe0
[<ffffffff8115602c>] try_to_compact_pages+0x11c/0x190
[<ffffffff811200bb>] __alloc_pages_nodemask+0x5eb/0x8b0
[<ffffffff81159932>] kmem_getpages+0x62/0x170
[<ffffffff8115a54a>] fallback_alloc+0x1ba/0x270
[<ffffffff8115a2c9>] ____cache_alloc_node+0x99/0x160
[<ffffffff8115b059>] __kmalloc+0x189/0x220
[<ffffffffa02539fb>] kmem_alloc_debug+0xeb/0x130 [spl]
[<ffffffffa031454a>] dnode_hold_impl+0x46a/0x550 [zfs]
[<ffffffffa0314649>] dnode_hold+0x19/0x20 [zfs]
[<ffffffffa03042e3>] dmu_read+0x33/0x180 [zfs]
[<ffffffffa034729d>] space_map_load+0xfd/0x320 [zfs]
[<ffffffffa03300bc>] metaslab_activate+0x10c/0x170 [zfs]
[<ffffffffa0330ad9>] metaslab_alloc+0x469/0x800 [zfs]
[<ffffffffa038963c>] zio_dva_allocate+0x6c/0x2f0 [zfs]
[<ffffffffa038a249>] zio_execute+0x99/0xf0 [zfs]
[<ffffffffa0254b1c>] taskq_thread+0x1cc/0x330 [spl]
[<ffffffff8108ddf6>] kthread+0x96/0xa0
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #291
2011-07-19 11:55:42 -07:00
Ricardo M. Correia
1e411a4c12
Quiet down very frequent large allocation warning in ZFS.
...
In my machine, dnode_hold_impl() allocates 9992 bytes in DEBUG mode and it
causes a large stream of stack traces in the logs. Instead, use KM_NODEBUG
to quiet down this known large alloc.
Signed-off-by: Ricardo M. Correia <ricardo.correia@oracle.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2010-09-17 16:24:15 -07:00
Brian Behlendorf
5ac1241a95
Fix dnode_move() scope
...
The dnode_move() functionality is only used in the kernel build.
As such we should be careful to wrap all of the related code
with '#ifdef _KERNEL' to avoid gcc warnings about unused code.
2010-08-31 08:38:47 -07:00
Brian Behlendorf
1fde1e3720
Fix gcc unused variable warnings
...
Gcc -Wall warn: 'unused variable'
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2010-08-31 08:38:43 -07:00
Brian Behlendorf
c65aa5b2b9
Fix gcc missing parenthesis warnings
...
Gcc -Wall warn: 'missing parenthesis'
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2010-08-31 08:38:35 -07:00
Brian Behlendorf
f709a82dc1
Fix gcc useless debug warnings
...
Gcc useless debugging.
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2010-08-27 15:34:01 -07:00
Brian Behlendorf
572e285762
Update to onnv_147
...
This is the last official OpenSolaris tag before the public
development tree was closed.
2010-08-26 14:24:34 -07:00
Brian Behlendorf
428870ff73
Update core ZFS code from build 121 to build 141.
2010-05-28 13:45:14 -07:00
Brian Behlendorf
45d1cae3b8
Rebase master to b121
2009-08-18 11:43:27 -07:00
Brian Behlendorf
9babb37438
Rebase master to b117
2009-07-02 15:44:48 -07:00
Brian Behlendorf
d164b20935
Rebase master to b108
2009-02-18 12:51:31 -08:00
Brian Behlendorf
fb5f0bc833
Rebase master to b105
2009-01-15 13:59:39 -08:00
Brian Behlendorf
172bb4bd5e
Move the world out of /zfs/ and seperate out module build tree
2008-12-11 11:08:09 -08:00
