https://github.com/torvalds/linux
Revision c974c4642fee8c58239c7753d0bf548b23799923 authored by Wang Shilong on 11 December 2013, 11:29:51 UTC, committed by Chris Mason on 12 December 2013, 15:12:20 UTC
I hit an oops when inserting reloc root into @reloc_root_tree(it can be easily triggered when forcing cow for relocation root) [ 866.494539] [<ffffffffa0499579>] btrfs_init_reloc_root+0x79/0xb0 [btrfs] [ 866.495321] [<ffffffffa044c240>] record_root_in_trans+0xb0/0x110 [btrfs] [ 866.496109] [<ffffffffa044d758>] btrfs_record_root_in_trans+0x48/0x80 [btrfs] [ 866.496908] [<ffffffffa0494da8>] select_reloc_root+0xa8/0x210 [btrfs] [ 866.497703] [<ffffffffa0495c8a>] do_relocation+0x16a/0x540 [btrfs] This is because reloc root inserted into @reloc_root_tree is not within one transaction,reloc root may be cowed and root block bytenr will be reused then oops happens.We should update reloc root in @reloc_root_tree when cow reloc root node, fix it. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Reviewed-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <clm@fb.com>
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Tip revision: c974c4642fee8c58239c7753d0bf548b23799923 authored by Wang Shilong on 11 December 2013, 11:29:51 UTC
Btrfs: fix an oops when doing balance relocation
Btrfs: fix an oops when doing balance relocation
Tip revision: c974c46
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| arch | ||
| block | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .gitignore | -rw-r--r-- | 1.1 KB |
| .mailmap | -rw-r--r-- | 4.4 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 93.0 KB |
| Kbuild | -rw-r--r-- | 2.5 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 258.3 KB |
| Makefile | -rw-r--r-- | 47.4 KB |
| README | -rw-r--r-- | 18.3 KB |
| REPORTING-BUGS | -rw-r--r-- | 7.3 KB |
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