static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f, unsigned long long off, unsigned long long len) { int ret = 0; #ifdef CONFIG_ESX return 0; #endif if (len == -1ULL) len = f->io_size; if (off == -1ULL) off = f->file_offset; if (len == -1ULL || off == -1ULL) return 0; dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off, len); if (td->io_ops->invalidate) ret = td->io_ops->invalidate(td, f); else if (f->mmap_ptr) { ret = posix_madvise(f->mmap_ptr, f->mmap_sz, POSIX_MADV_DONTNEED); #ifdef FIO_MADV_FREE if (f->filetype == FIO_TYPE_BD) (void) posix_madvise(f->mmap_ptr, f->mmap_sz, FIO_MADV_FREE); #endif } else if (f->filetype == FIO_TYPE_FILE) { ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED); } else if (f->filetype == FIO_TYPE_BD) { ret = blockdev_invalidate_cache(f); if (ret < 0 && errno == EACCES && geteuid()) { if (!root_warn) { log_err("fio: only root may flush block " "devices. Cache flush bypassed!\n"); root_warn = 1; } ret = 0; } } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE) ret = 0; /* * Cache flushing isn't a fatal condition, and we know it will * happen on some platforms where we don't have the proper * function to flush eg block device caches. So just warn and * continue on our way. */ if (ret) { log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errno)); ret = 0; } return 0; }
static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f, unsigned long long off, unsigned long long len) { int ret = 0; if (len == -1ULL) len = f->io_size; if (off == -1ULL) off = f->file_offset; if (len == -1ULL || off == -1ULL) return 0; dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off, len); /* * FIXME: add blockdev flushing too */ if (f->mmap_ptr) { ret = posix_madvise(f->mmap_ptr, f->mmap_sz, POSIX_MADV_DONTNEED); #ifdef FIO_MADV_FREE if (f->filetype == FIO_TYPE_BD) (void) posix_madvise(f->mmap_ptr, f->mmap_sz, FIO_MADV_FREE); #endif } else if (f->filetype == FIO_TYPE_FILE) { ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED); } else if (f->filetype == FIO_TYPE_BD) { ret = blockdev_invalidate_cache(f); if (ret < 0 && errno == EACCES && geteuid()) { if (!root_warn) { log_err("fio: only root may flush block " "devices. Cache flush bypassed!\n"); root_warn = 1; } ret = 0; } } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE) ret = 0; if (ret < 0) { td_verror(td, errno, "invalidate_cache"); return 1; } else if (ret > 0) { td_verror(td, ret, "invalidate_cache"); return 1; } return ret; }
static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f, unsigned long long off, unsigned long long len) { int errval = 0, ret = 0; #ifdef CONFIG_ESX return 0; #endif if (len == -1ULL) len = f->io_size; if (off == -1ULL) off = f->file_offset; if (len == -1ULL || off == -1ULL) return 0; dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off, len); if (td->io_ops->invalidate) { ret = td->io_ops->invalidate(td, f); if (ret < 0) errval = ret; } else if (f->filetype == FIO_TYPE_FILE) { ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED); if (ret) errval = ret; } else if (f->filetype == FIO_TYPE_BD) { int retry_count = 0; ret = blockdev_invalidate_cache(f); while (ret < 0 && errno == EAGAIN && retry_count++ < 25) { /* * Linux multipath devices reject ioctl while * the maps are being updated. That window can * last tens of milliseconds; we'll try up to * a quarter of a second. */ usleep(10000); ret = blockdev_invalidate_cache(f); } if (ret < 0 && errno == EACCES && geteuid()) { if (!root_warn) { log_err("fio: only root may flush block " "devices. Cache flush bypassed!\n"); root_warn = 1; } ret = 0; } if (ret < 0) errval = errno; } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE) ret = 0; /* * Cache flushing isn't a fatal condition, and we know it will * happen on some platforms where we don't have the proper * function to flush eg block device caches. So just warn and * continue on our way. */ if (errval) log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errval)); return 0; }