https://github.com/torvalds/linux
Revision 02b709df817c0db174f249cc59e5f7fd01b64d92 authored by Nick Piggin on 01 February 2010, 11:25:57 UTC, committed by Linus Torvalds on 02 February 2010, 20:50:47 UTC
Improve handling of fragmented per-CPU vmaps. We previously don't free up per-CPU maps until all its addresses have been used and freed. So fragmented blocks could fill up vmalloc space even if they actually had no active vmap regions within them. Add some logic to allow all CPUs to have these blocks purged in the case of failure to allocate a new vm area, and also put some logic to trim such blocks of a current CPU if we hit them in the allocation path (so as to avoid a large build up of them). Christoph reported some vmap allocation failures when using the per CPU vmap APIs in XFS, which cannot be reproduced after this patch and the previous bug fix. Cc: linux-mm@kvack.org Cc: stable@kernel.org Tested-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Nick Piggin <npiggin@suse.de> -- Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent de56042
Tip revision: 02b709df817c0db174f249cc59e5f7fd01b64d92 authored by Nick Piggin on 01 February 2010, 11:25:57 UTC
mm: purge fragmented percpu vmap blocks
mm: purge fragmented percpu vmap blocks
Tip revision: 02b709d
| File | Mode | Size |
|---|---|---|
| lzo | ||
| reed_solomon | ||
| zlib_deflate | ||
| zlib_inflate | ||
| .gitignore | -rw-r--r-- | 51 bytes |
| Kconfig | -rw-r--r-- | 4.1 KB |
| Kconfig.debug | -rw-r--r-- | 36.4 KB |
| Kconfig.kgdb | -rw-r--r-- | 1.8 KB |
| Kconfig.kmemcheck | -rw-r--r-- | 2.9 KB |
| Makefile | -rw-r--r-- | 3.4 KB |
| argv_split.c | -rw-r--r-- | 1.8 KB |
| atomic64.c | -rw-r--r-- | 4.1 KB |
| audit.c | -rw-r--r-- | 1.2 KB |
| bcd.c | -rw-r--r-- | 257 bytes |
| bitmap.c | -rw-r--r-- | 32.7 KB |
| bitrev.c | -rw-r--r-- | 2.1 KB |
| bug.c | -rw-r--r-- | 4.6 KB |
| bust_spinlocks.c | -rw-r--r-- | 636 bytes |
| check_signature.c | -rw-r--r-- | 599 bytes |
| checksum.c | -rw-r--r-- | 4.9 KB |
| cmdline.c | -rw-r--r-- | 3.6 KB |
| cpumask.c | -rw-r--r-- | 4.5 KB |
| crc-ccitt.c | -rw-r--r-- | 3.0 KB |
| crc-itu-t.c | -rw-r--r-- | 2.8 KB |
| crc-t10dif.c | -rw-r--r-- | 2.9 KB |
| crc16.c | -rw-r--r-- | 2.8 KB |
| crc32.c | -rw-r--r-- | 14.3 KB |
| crc32defs.h | -rw-r--r-- | 1.0 KB |
| crc7.c | -rw-r--r-- | 2.3 KB |
| ctype.c | -rw-r--r-- | 1.3 KB |
| debug_locks.c | -rw-r--r-- | 1.1 KB |
| debugobjects.c | -rw-r--r-- | 24.0 KB |
| dec_and_lock.c | -rw-r--r-- | 782 bytes |
| decompress.c | -rw-r--r-- | 1.2 KB |
| decompress_bunzip2.c | -rw-r--r-- | 23.4 KB |
| decompress_inflate.c | -rw-r--r-- | 3.6 KB |
| decompress_unlzma.c | -rw-r--r-- | 15.5 KB |
| decompress_unlzo.c | -rw-r--r-- | 4.8 KB |
| devres.c | -rw-r--r-- | 7.7 KB |
| div64.c | -rw-r--r-- | 2.3 KB |
| dma-debug.c | -rw-r--r-- | 31.5 KB |
| dump_stack.c | -rw-r--r-- | 290 bytes |
| dynamic_debug.c | -rw-r--r-- | 18.0 KB |
| extable.c | -rw-r--r-- | 2.4 KB |
| fault-inject.c | -rw-r--r-- | 7.9 KB |
| find_last_bit.c | -rw-r--r-- | 1.1 KB |
| find_next_bit.c | -rw-r--r-- | 6.4 KB |
| flex_array.c | -rw-r--r-- | 9.2 KB |
| gcd.c | -rw-r--r-- | 291 bytes |
| gen_crc32table.c | -rw-r--r-- | 1.8 KB |
| genalloc.c | -rw-r--r-- | 5.1 KB |
| halfmd4.c | -rw-r--r-- | 2.0 KB |
| hexdump.c | -rw-r--r-- | 6.1 KB |
| hweight.c | -rw-r--r-- | 1.6 KB |
| idr.c | -rw-r--r-- | 21.3 KB |
| inflate.c | -rw-r--r-- | 38.6 KB |
| int_sqrt.c | -rw-r--r-- | 533 bytes |
| iomap.c | -rw-r--r-- | 7.4 KB |
| iomap_copy.c | -rw-r--r-- | 2.1 KB |
| iommu-helper.c | -rw-r--r-- | 1.2 KB |
| ioremap.c | -rw-r--r-- | 2.1 KB |
| irq_regs.c | -rw-r--r-- | 578 bytes |
| is_single_threaded.c | -rw-r--r-- | 1.3 KB |
| kasprintf.c | -rw-r--r-- | 680 bytes |
| kernel_lock.c | -rw-r--r-- | 3.2 KB |
| klist.c | -rw-r--r-- | 9.3 KB |
| kobject.c | -rw-r--r-- | 20.8 KB |
| kobject_uevent.c | -rw-r--r-- | 8.4 KB |
| kref.c | -rw-r--r-- | 1.9 KB |
| libcrc32c.c | -rw-r--r-- | 2.1 KB |
| list_debug.c | -rw-r--r-- | 1.5 KB |
| list_sort.c | -rw-r--r-- | 2.0 KB |
| lmb.c | -rw-r--r-- | 11.5 KB |
| locking-selftest-hardirq.h | -rw-r--r-- | 207 bytes |
| locking-selftest-mutex.h | -rw-r--r-- | 120 bytes |
| locking-selftest-rlock-hardirq.h | -rw-r--r-- | 74 bytes |
| locking-selftest-rlock-softirq.h | -rw-r--r-- | 74 bytes |
| locking-selftest-rlock.h | -rw-r--r-- | 158 bytes |
| locking-selftest-rsem.h | -rw-r--r-- | 163 bytes |
| locking-selftest-softirq.h | -rw-r--r-- | 207 bytes |
| locking-selftest-spin-hardirq.h | -rw-r--r-- | 73 bytes |
| locking-selftest-spin-softirq.h | -rw-r--r-- | 73 bytes |
| locking-selftest-spin.h | -rw-r--r-- | 118 bytes |
| locking-selftest-wlock-hardirq.h | -rw-r--r-- | 74 bytes |
| locking-selftest-wlock-softirq.h | -rw-r--r-- | 74 bytes |
| locking-selftest-wlock.h | -rw-r--r-- | 158 bytes |
| locking-selftest-wsem.h | -rw-r--r-- | 163 bytes |
| locking-selftest.c | -rw-r--r-- | 28.6 KB |
| lru_cache.c | -rw-r--r-- | 14.6 KB |
| nlattr.c | -rw-r--r-- | 12.2 KB |
| parser.c | -rw-r--r-- | 6.1 KB |
| percpu_counter.c | -rw-r--r-- | 3.2 KB |
| plist.c | -rw-r--r-- | 2.9 KB |
| prio_heap.c | -rw-r--r-- | 1.4 KB |
| prio_tree.c | -rw-r--r-- | 12.2 KB |
| proportions.c | -rw-r--r-- | 9.3 KB |
| radix-tree.c | -rw-r--r-- | 31.9 KB |
| random32.c | -rw-r--r-- | 3.8 KB |
| ratelimit.c | -rw-r--r-- | 1.4 KB |
| rational.c | -rw-r--r-- | 1.5 KB |
| rbtree.c | -rw-r--r-- | 8.5 KB |
| reciprocal_div.c | -rw-r--r-- | 159 bytes |
| rwsem-spinlock.c | -rw-r--r-- | 6.8 KB |
| rwsem.c | -rw-r--r-- | 6.4 KB |
| scatterlist.c | -rw-r--r-- | 12.0 KB |
| sha1.c | -rw-r--r-- | 2.4 KB |
| show_mem.c | -rw-r--r-- | 1.4 KB |
| smp_processor_id.c | -rw-r--r-- | 1.1 KB |
| sort.c | -rw-r--r-- | 2.5 KB |
| spinlock_debug.c | -rw-r--r-- | 6.9 KB |
| string.c | -rw-r--r-- | 14.4 KB |
| string_helpers.c | -rw-r--r-- | 1.7 KB |
| swiotlb.c | -rw-r--r-- | 25.4 KB |
| syscall.c | -rw-r--r-- | 2.4 KB |
| textsearch.c | -rw-r--r-- | 9.5 KB |
| ts_bm.c | -rw-r--r-- | 5.3 KB |
| ts_fsm.c | -rw-r--r-- | 10.6 KB |
| ts_kmp.c | -rw-r--r-- | 4.3 KB |
| vsprintf.c | -rw-r--r-- | 48.3 KB |
Computing file changes ...
