diff options
Diffstat (limited to 'tests/fs-tests/integrity/integck.c')
| -rw-r--r-- | tests/fs-tests/integrity/integck.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/tests/fs-tests/integrity/integck.c b/tests/fs-tests/integrity/integck.c index f1a2f84..bbbc7cb 100644 --- a/tests/fs-tests/integrity/integck.c +++ b/tests/fs-tests/integrity/integck.c @@ -213,7 +213,6 @@ static int full = 0; /* Flag that the file system is full */ static uint64_t operation_count = 0; /* Number of operations used to fill up the file system */ static unsigned int check_run_no; - static unsigned int random_seed; /* @@ -1110,11 +1109,14 @@ static int file_mmap_write(struct file_info *file) uint64_t free_space; int fd; + assert(!args.power_cut_mode); + if (!file->links) return 0; get_fs_space(NULL, &free_space); if (!free_space) return 0; + /* Randomly pick a written area of the file */ if (!w) return 0; @@ -1191,8 +1193,20 @@ static int file_write(struct file_info *file, int fd) unsigned int seed; int ret, truncate = 0; - if (fsinfo.can_mmap && !full && file->link_count && - random_no(100) == 1) + /* + * Do not do 'mmap()' operations if: + * 1. we are in power cut testing mode, because an emulated power cut + * failure may cause SIGBUS when we are writing to the 'mmap()'ed + * area, and SIGBUS is not easy to ignore. + * 2. When the file-system is full, because again, writing to the + * 'mmap()'ed area may cause SIGBUS when the space allocation fails. + * This is not enough to guarantee we never get SIGBUS, though. For + * example, if we write a lot to a hole, this might require a lot of + * additional space, and we may fail here. But I do not know why we + * never observed this, probably this is just very unlikely. + */ + if (!args.power_cut_mode && fsinfo.can_mmap && !full && + file->link_count && random_no(100) == 1) return file_mmap_write(file); get_offset_and_size(file, &offset, &size); |