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| author | Yunlei He <heyunlei@huawei.com> | 2017-09-07 10:40:54 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-09-21 14:50:17 -0700 |
| commit | b70c5bf429edad6e1856c20a8d0a309df72af544 (patch) | |
| tree | 47775b26aa32ec38817b5711055a73e4d4447117 /tools/perf/scripts/python/failed-syscalls-by-pid.py | |
| parent | fc9c6007a268f2c48643ce32efef6862433580ff (diff) | |
f2fs: avoid race in between read xattr & write xattr
Thread A: Thread B:
-f2fs_getxattr
-lookup_all_xattrs
-xnid = F2FS_I(inode)->i_xattr_nid;
-f2fs_setxattr
-__f2fs_setxattr
-write_all_xattrs
-truncate_xattr_node
... ...
-write_checkpoint
... ...
-alloc_nid <- nid reuse
-get_node_page
-f2fs_bug_on <- nid != node_footer->nid
It's need a rw_sem to avoid the race
Signed-off-by: Yunlei He <heyunlei@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/failed-syscalls-by-pid.py')
0 files changed, 0 insertions, 0 deletions